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Class Numbers & Titles | Class Numbers Only | USPC Index | International | HELP |
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Class 48 | GAS: HEATING AND ILLUMINATING |
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ACETYLENE |
1 | Generation and liquefaction |
2 | Generator and holder |
3R | Generator and mixer |
Generators |
4 | Water feed |
5 | Holder operated |
6 | Series |
8 | Cell series |
9 | Gasometer and high-pressure holder |
10 | Interior valve |
11 | Rotary cylinder |
12 | Underfeed |
13 | Valveless |
19 | Ebb and flow |
23 | Series |
24 | Cell series |
25 | Capillary |
27 | Percolating |
29 | Expansible carbide container |
30 | Expansible water holder |
31 | Inexpansible gas holder and water feed |
32R | Oscillating |
33 | Rotary cylinder |
34 | Rotary grate |
35 | Underfeed |
36 | Interlocking devices |
37 | Pressure valves |
38 | Carbide feed |
39 | Apron or belt |
40 | Cock |
41 | Dip |
43 | Flap valve |
44 | Hand |
46 | Measured charges |
51 | Piston |
52 | Plate valve |
53 | Pop valve |
54 | Screw |
55 | Slide valve |
58 | Valves, gas and water feed |
56 | Automatic safety escape |
57 | Sludge remover |
59 | Carbide cartridges |
61 | GENERATORS |
Hydrogen |
62R | Cupola |
71 | Coal, oil and water |
72 | Coal and oil |
73 | Coal and water |
76 | Producers |
77 | Coal |
78 | Water |
85 | Carbon monoxide |
75 | Oil and steam injected |
63 | Air and steam injected |
65 | Electric |
66 | Rotary bottom |
67 | Water jacket |
69 | Water-seal pit |
74 | Refractory filling |
Fuel agitating |
86R | Chargers |
87 | Accessories |
62A | Partial combustion carburetor |
89 | Retort |
98 | Coal, oil and water |
99 | Coal and water |
100 | Coal and oil |
101 | Coal |
102R | Oil |
103 | Electric heater |
104 | Jet mixers |
105 | Steam injected |
106 | Automatic feed |
107 | Air injected |
102A | Utilizing heat from exhaust gases |
108 | Water |
111 | Wood |
92 | Metal bath |
93 | Oil and gas injected |
94 | Oil and steam injected |
90 | Domestic plants |
113 | Furnaces |
118.5 | Portable |
119 | RETORTS |
127.1 | CONVERSION OF HYDROCARBON GAS AND BLENDING OF PRODUCT WITH FURTHER HYDROCARBON GAS, PROCESS |
127.3 | METHANE (NATURAL GAS) -CONTAINING PRODUCT, OR TREATMENT OR RECOVERY PROCESS |
127.9 | APPARATUS FOR CONVERTING OR TREATING HYDROCARBON GAS |
144 | CARBURETORS |
128 | PURIFIERS |
170 | CENTER AND BY-PASS VALVES |
173 | EXHAUSTERS |
174 | HOLDERS |
180.1 | MIXERS |
181 | Bell and tank |
184 | Diaphragm |
185 | Gravity |
186 | Pump |
187 | Rotary drum |
189.1 | Three or more different fluids entering apparatus |
189.2 | With heating means |
189.3 | Auxilary air inlet |
189.4 | Mixer in flow path of existing mixture |
190 | DISTRIBUTION |
197R | PROCESSES |
198.1 | Manufacture from methane (natural gas) |
198.2 | Employing carbon particles, porous barrier element or molten material |
198.3 | With specified treatment of converted product, e.g., purification, particular cooling, testing, etc. |
198.5 | Employing oxygen donor particles or carbidable metal particles |
198.6 | Specified direction of gas travel through particle mass, e.g., fluidization, flow reversal, etc. |
198.7 | Employing catalytic particles |
198.8 | With specified reactant velocity, angle of entry to reactor or mechanical energy production, e.g., use of internal combustion engine, etc. |
Hydrogen |
200 | Coal, oil and water |
201 | Coal and oil |
202 | Coal and water |
203 | Producer |
204 | Water |
209 | Wood |
210 | Coal |
211 | Oil |
214R | Oil and steam injected |
216 | Acetylene |
219 | Carbureting |
197FM | Fuel mixtures |
197A | Sewage treatment |
FOREIGN ART COLLECTIONS | ||
FOR000 | CLASS-RELATED FOREIGN DOCUMENTS |
DIGESTS | ||
DIG1 | RECIRCULATION OF GASES PRODUCED TO LOWER PART OF FUEL BED |
DIG2 | SLAGGING PRODUCER |
DIG3 | HIGH PRESSURE |
DIG4 | POWDERED FUEL INJECTION |
DIG5 | DIFFUSION MEMBRANE FOR GAS REACTION OR SEPARATION |
DIG6 | UNDERGROUND GASIFICATION OF COAL |
DIG7 | SLURRY |
DIG8 | INTERNAL COMBUSTION ENGINE FOR GAS MAKING |
DIG9 | SOLAR GASIFICATION |
DIG10 | COMPUTER RESISTED CONTROL |
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