|
|
Class Numbers & Titles | Class Numbers Only | USPC Index | International | HELP |
You are viewing a USPC Schedule. |
Class 162 | PAPER MAKING AND FIBER LIBERATION |
Click here for a printable version of this file |
1 | PROCESSES OF CHEMICAL LIBERATION, RECOVERY OR PURIFICATION OF NATURAL CELLULOSE OR FIBROUS MATERIAL |
2 | Animal fibers |
3 | Mineral fibers |
4 | Waste paper or textile waste |
5 | With organic agent |
6 | With chlorine, chlorine compounds, oxygen, ozone, or per-compounds |
7 | With sulfur or sulfur compound |
8 | With alkali metal, alkaline earth metal, or ammonium compound |
9 | With chemical or physical modification of liberated fiber |
10 | With non-fiber material added to product |
13 | With formation of web or article |
14 | Including recovery of organic by-product |
17 | Continuous chemical treatment or continuous charging or discharging |
18 | With compression, squeezing or compacting of fibrous material during charging |
19 | Plural diverse stage treatment |
20 | With decortication or mechanical preparation of textile fibers |
21 | Defibration by projection or explosion |
23 | Mechanical defibration in the presence of heated gas or gas under pressure |
24 | Chemical treatment after start or completion of mechanical defibration |
26 | Simultaneous mechanical defibration and chemical treatment |
27 | Mechanical defibration of logs or blocks after chemical treatment |
28 | With plural or specified mechanical defibering step |
29 | With regeneration, reclamation, reuse, recycling or destruction of digestion fluid |
30.1 | With destruction of organic ingredient in or smelting of liquor |
30.11 | Treatment of kraft pulping chemicals |
31 | Flames combustion |
32 | Liquor from digestion using organic compound or including element other than Na, Ca, Mg, O, C, H or S |
33 | With mixing of liquors from different digestions |
34 | Plural diverse digestion of same fibrous material |
35 | Residue converted into liquor different from original liquor |
36 | Sulfur dioxide or sulfite containing spent liquor |
37 | Digestion fluid reused on different fibrous materials |
41 | Recirculation (includes separation from fibers) |
47 | With heat recovery |
48 | With cleaning, preserving or conditioning of apparatus |
49 | With testing, sampling or analyzing |
50 | Utilizing electrical or radiant energy |
51 | Digestion odor control |
52 | Charging and/or discharging fibrous material |
53 | Vacuum treatment |
54 | Freezing |
55 | With classifying, separating or screening of pulp (solids from solids) |
56 | With squeezing, compression, rubbing, kneading |
57 | With agitation or forced circulation |
60 | With washing |
61 | Regulatory |
63 | Gas, vapor or mist contact |
69 | Non-continuous liquid phase |
70 | Treatment with particular chemical |
71 | Treatment of ground-wood or sawdust |
72 | Organic |
73 | With inorganic chlorine containing material |
74 | Chlorine containing |
75 | Fat, fatty oil or higher fatty acid |
76 | Acids, salts or esters |
77 | Alcohols or phenols |
78 | Per-compound (e.g., peroxide, perborate) |
79 | Heavy metal or aluminum containing |
80 | Phosphorus, boron or silicon containing |
81 | Nitrogen oxide, acid, or salt thereof |
82 | Sulfur containing |
87 | Chlorine containing |
90 | Alkali metal, ammonium, alkaline earth metal or magnesium hydroxide or carbonate |
91 | Particular raw cellulosic materials |
100 | PROCESSES AND PRODUCTS |
101 | Pore forming in situ (e.g., gas generation) |
102 | Utilizing non-aqueous suspending medium |
103 | Including solid non-waterlaid preform |
109 | Non-uniform, irregular or configured web or sheet |
110 | Watermarking |
111 | Creping and/or crinkling |
114 | By perforating |
115 | By fluid pressure |
116 | By configured forming mold |
117 | Subsequent treatment by irregular or configured die |
118 | With winding or roll forming |
123 | Multi-layer waterlaid webs or sheets |
124 | With non-fiber added between layers |
125 | Layers of different properties |
132 | Separately formed webs subsequently united |
134 | With printing and/or variegated coloring |
135 | With coating after drying |
138 | Electrical or magnetic product characteristic |
139 | Cigarette paper |
140 | Safety, identification and fraud preventing paper |
141 | Plural fiber containing |
142 | Undigested cellulosic fiber |
143 | Animal or proteinaceous |
145 | Mineral |
146 | Synthetic (including chemically modified cellulose) |
147 | Waste paper or textile waste |
148 | Non-wood |
149 | Fibers of different dimensions |
150 | Undigested cellulosic fiber |
151 | Animal or proteinaceous fiber |
152 | Mineral fiber |
157.1 | Synthetic fiber (including chemically modified cellulose) |
157.2 | Synthetic resin |
157.6 | Cellulosic |
158 | Non-fiber additive |
159 | Fire proofing agent |
160 | Preservative or antioxidant |
162 | Coloring agent |
163 | Fiber supplied constituent |
164.1 | Synthetic resin |
164.2 | Ion exchange resin or molecular sieve |
164.3 | Epoxy containing reactant |
164.4 | Silicon containing |
164.5 | Sulfur containing |
164.6 | Nitrogen containing |
164.7 | Ester type |
165 | Phenol-aldehyde |
166 | Amine- or amide-aldehyde |
168.1 | Polymerized unsaturated compound |
170 | Natural hydrocarbon gum (rubber) |
171 | Bitumen |
172 | Wax |
173 | Hydrocarbon |
174 | Protein |
175 | Carbohydrate |
179 | Fat, fatty oil, or higher fatty acid |
180 | Natural resin |
181.1 | Inorganic |
181.2 | Metal salt other than silicate |
181.4 | Metal oxide or hydroxide |
181.6 | Silicon containing additive other than clay |
181.8 | Clay |
181.9 | Free metal or free carbon containing |
182 | With preparatory chemical treatment of fiber |
183 | Incorporation procedures |
187 | Hydration and/or gelatinization |
188 | Non-uniform internal structure |
189 | Reclamation, salvage or reuse of materials |
192 | Utilizing electrical or wave energy |
193 | Lead strip forming and/or guiding |
194 | With cutting and/or slitting |
196 | With folding or twisting (e.g., roving) |
197 | With stretching, tensioning, decurling, flexing or breaking |
198 | With measuring, inspecting and/or testing |
199 | Conditioning, preparing or repairing of apparatus |
201 | Combined processes |
202 | Running or indefinite length work forming and/or treating processes (e.g., web) |
203 | Forming single web between opposed forming surfaces |
204 | Subsequent treatment of formed web |
208 | Treatment of slurry on mold surface |
211 | Inhibiting or restricting drainage through mold |
212 | Directing slurry into association with mold |
213 | Projecting or slinging stock |
214 | Pressure forming |
215 | Counter or transverse of mold movement |
216 | Mechanical treatment of slurry in head box or approach flow |
217 | Suction through mold |
218 | Article forming processes (pulp molding) |
219 | Plural stage deposition |
220 | Pressing with flexible diaphragm |
221 | Treatment subsequent to removal from forming mold |
222 | Surface treatment |
223 | Reshaping (i.e., changing configuration) |
224 | Heat and/or mechanical pressure |
226 | Applying heat to work on forming mold |
227 | Applying mechanical pressure to work on forming mold |
228 | Accretion from bulk |
230 | Separation from mold or core |
231 | Articles |
232 | APPARATUS |
233 | Digester |
234 | With mechanical defibering means |
237 | Continuous |
238 | Automatic control |
239 | With recovery means |
241 | Plural |
242 | Combined |
243 | With pulp agitating or circulating means |
245 | Removable basket or retaining means |
246 | Charging and/or discharging means (including blow pits) |
248 | Forced circulation or percolation of fluid only |
250 | Heating means |
251 | Strainers |
252 | Automatic control |
253 | Of plural operations |
254 | Of stock working device |
255 | Of lead strip former and/or break sensing |
256 | Of mold movement |
258 | Of stock consistency |
259 | Of stock feed to forming device |
260 | Of product cutting device |
261 | With beating, refining, and/or disintegrating means |
262 | Electric controls or systems |
263 | Measuring, testing, inspecting, indicating or illuminating |
264 | White water or broke recovery, recirculation or treatment |
265 | With coating or impregnating means (including printing) |
267 | Molding pulp and non-pulp insert or preform |
269 | With product stacking or piling means |
270 | Flexing, bending, straightening or decurling means |
272 | Apparatus repair, cleaning or conditioning |
280 | Web creping or crinkling type |
283 | With product winding or reeling means |
286 | With cutting, scoring, perforating or tearing |
287 | With folding, rolling or twisting means |
288 | Molding and burnishing means |
289 | Running or indefinite length product forming and/or treating means |
290 | Molding and heat exchange means |
291 | Moving impermeable member applying stock to mold |
292 | Means flinging or projecting stock against mold |
293 | Product slides relative to molding surface (e.g., extrusion molding) |
294 | Mold intermittently moving relative to supply |
295 | Concave molding surface in longitudinal or transverse section |
296 | Irregular or configured molding surface (e.g., corrugated) |
297 | Pneumatic pressure or vacuum means acting directly on stock on mold surface |
298 | Plural separate streams of stock applied to mold |
300 | Plural molds or plural spaced areas of application on a single mold |
301 | Common vat or stock feed |
303 | Molds converge to unit web |
304 | Webs united on common carrier (e.g., felt) |
305 | Molds with subsequent separate pressing means |
306 | Means removing web product from molding surface |
308 | Means treating stock on molding surface |
309 | Irregular treating member or acting non-uniformly across web product |
311 | Submerged in supply |
312 | Solid treating member |
315 | Means directing stock into contact with molding surface |
316 | On to under surface only of mold |
317 | Confined stock stream on forming surface (e.g., pressure forming) |
318 | Cylinder mold with endless forming belt about |
320 | Superposed or lateral stock pool type |
322 | With diverse non-pulp material inlet |
323 | Immersion vat type (e.g., cylinder machine vat) |
324 | Stock flow direction reversing means |
325 | Stock directed transversely of mold direction |
326 | Stock applied at plural points on mold periphery |
327 | Baffles diverting or directing flow against cylinder mold |
330 | Fluid level control |
331 | Side seals |
332 | Mold hanging |
334 | Mask, deckle or apron |
335 | With drain or suction means, for white water |
336 | Flow box, slice, and/or approach flow |
348 | Flexible endless band type mold (e.g., Fourdrinier) |
349 | Concurrently moving back up |
350 | Variable slope |
351 | Means retarding or controlling drainage through mold |
353 | Mask, deckle, or apron |
354 | Table structure |
357 | Cylinder molds, per se |
358.1 | Press and felt |
358.2 | With felt structure or felt composition |
358.3 | Extended nip press |
359.1 | With separate heated drying means |
360.2 | Plural sequential presses |
361 | Solid means acting on formed web |
363 | Suction devices |
375 | With heat exchange means |
380 | Slurry supply conditioning or condition maintaining |
381 | Combined |
382 | Foraminous forming mold for discrete articles (pulp molding) |
383 | Differing areas of porosity or of suction on single mold surface (including masking) |
384 | Centrifugal |
385 | With moving slurry supply container |
386 | With handle or hand grip |
387 | Accretion from bulk (i.e., immersed mold) |
396 | Press felting (i.e., pressure member acting on pulp on mold) |
397 | Plural molds (cavities) |
399 | Plate or sheet type |
401 | Flexible diaphragm |
403 | Contracting matrix |
405 | Expanding and/or contracting core |
406 | About foraminous core |
407 | Mold charging means |
410 | Article ejecting |
411 | Dipping molds, per se |
415 | Compressor |
CROSS-REFERENCE ART COLLECTIONS | ||
900 | PAPERMAKING PRESS FELTS |
901 | IMPERMEABLE BELTS FOR EXTENDED NIP PRESS |
902 | WOVEN FABRIC FOR PAPERMAKING DRIER SECTION |
903 | PAPER FORMING MEMBER (E.G., FOURDRINIER, SHEET FORMING MEMBER, ETC.) |
904 | WITH SPECIFIED SEAM STRUCTURE OF PAPERMAKING BELT |
FOREIGN ART COLLECTIONS | ||
FOR000 | CLASS-RELATED FOREIGN DOCUMENTS |
DIGESTS | ||
DIG2 | CHIP SOAKING |
DIG3 | WETTING AGENT |
DIG4 | PITCH CONTROL |
DIG5 | ALPHA CELLULOSE |
DIG6 | MOISTURE AND BASIC WEIGHT |
DIG7 | WATER COLLECTORS (E.G., SAVE-ALLS) |
DIG8 | CHLORINE-CONTAINING LIQUID REGENERATION |
DIG9 | USES FOR PAPER MAKING SLUDGE |
DIG12 | SEASONING |
This page is produced by the Office of Classification Support (Office of Patent Classification) for the Reference Tools Project.
Please send questions and comments to usptoinfo@uspto.gov .
Note: The Patent and Trademark Depository Library Program (PTDLP) administers a nationwide network of public, state and academic libraries designated as Patent and Trademark Depository Libraries authorized by 35 U.S.C. 13 to: Disseminate Patent and Trademark Information Support Diverse Intellectual Property Needs of the Public. PTDL Contact Information
Note: For information/comments on electronic information products, such as purchasing USPTO data, or to discuss system requirements for magnetic tape products, contact:
Information Products Division -- U.S. Patent and Trademark Office
Information Products Division
Contact Information
Or, browse
their on-line catalog.
The Inventors Assistance Center is available to help you on patent matters.Send questions about USPTO programs and services to the USPTO Contact Center (UCC). You can suggest USPTO webpages or material you would like featured on this section by E-mail to the webmaster@uspto.gov. While we cannot promise to accommodate all requests, your suggestions will be considered and may lead to other improvements on the website. |
|