| Class Number |
Class Name |
Patents |
| 44/250 |
Flameless or glowless |
14 |
| 44/265 |
Solidified liquid (e.g., gel, etc.) |
37 |
| 44/275 |
Candle composition |
150 |
| 44/280 |
Solid carbonaceous fuel dispersed in a liquid medium (e.g., dispersed coal, coke, carbon powder, peat, etc.) |
234 |
| 44/300 |
Liquid fuels (excluding fuels that are exclusively mixtures of liquid hydrocarbons) |
102 |
| 44/490 |
Peat |
26 |
| 44/500 |
Particulate (e.g., powdered, etc.) |
52 |
| 44/506 |
Combined with friction igniting mass or surface |
6 |
| 44/511 |
Match splint or stick |
7 |
| 44/519 |
Provided with wick or fuse |
31 |
| 44/520 |
Fuel product having passageway for gas |
24 |
| 44/530 |
Fuel product of defined shape or structure |
73 |
| 44/540 |
With incombustible carrier (e.g., torch, etc.) |
22 |
| 44/541 |
Bundled, covered or wrapped |
51 |
| 44/542 |
Coated or impregnated for easier ignition |
35 |
| 44/550 |
Consolidated solids (e.g., briquette, etc.) |
36 |
| 44/600 |
With appearance modifying additive or treatment |
18 |
| 44/601 |
With antifreezing additive or treatment |
16 |
| 44/602 |
With antidusting additive |
38 |
| 44/603 |
With combustion improver |
52 |
| 44/605 |
From vegetation or refuse |
103 |
| 44/607 |
Carbonized component (e.g., coke, etc.) |
77 |
| 44/608 |
"low-rank" coal (e.g., lignite, etc.) |
91 |
| 44/620 |
Coal treating process or product thereof |
198 |
| 44/628 |
Miscellaneous fuel composition |
83 |
| 44/629 |
Apparatus for making or treating fuel composition |
92 |
| 44/640 |
Wall deposit preventing or removing composition (e.g., soot removal, etc.) |
27 |
| 44/641 |
Solid fuel combustion improving composition |
24 |
| 44/642 |
Flame colorant composition |
16 |
| 44/643 |
Match scratcher composition or structure |
8 |
| 44/901 |
Fuel combined with material to be heated |
5 |
| 44/903 |
Method including measuring, testing or automatic control |
27 |
| 44/904 |
Method involving electric or wave energy |
31 |
| 44/905 |
Method involving added catalyst |
24 |
