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Class Information
Number: 202/269
Name: Distillation: apparatus > Apparatus > Elements > Air and gas seals
Description: Miscellaneous devices for preventing access or exit of air or gas to the chambers and pipes of the apparatus.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7438786 |
Coke drum discharge system |
Oct. 21, 2008 |
| 7341647 |
Coke carbonization furnace cover for promoting increase in temperature of coal particles near the cover |
Mar. 11, 2008 |
| 7166197 |
Coke oven door with wraparound gas channel and membrane |
Jan. 23, 2007 |
| 7067043 |
Coke oven door with gas channel |
Jun. 27, 2006 |
| 6916406 |
Coke oven door |
Jul. 12, 2005 |
| 6716320 |
Evaporation of liquids |
Apr. 6, 2004 |
| 6663751 |
Device for evaporation and condensation in confined environment |
Dec. 16, 2003 |
| 6635148 |
Method for refining easily polymerizable matter-contained substance and apparatus therefor |
Oct. 21, 2003 |
| 6554965 |
Rectification column for isolating pure substances from high boiling air-and/or temperature sensitive substances |
Apr. 29, 2003 |
| 6342127 |
Distillation device |
Jan. 29, 2002 |
| 6193849 |
Fractionator with liquid-vapor separation means |
Feb. 27, 2001 |
| 6010599 |
Compact vacuum distillation device |
Jan. 4, 2000 |
| 5876568 |
Safe and semi-automatic removal of heavy drum closures |
Mar. 2, 1999 |
| 5871619 |
Plug seal discharge system for distillation apparatus |
Feb. 16, 1999 |
| 5759356 |
Evaporator flask for a rotary evaporator |
Jun. 2, 1998 |
| 5714043 |
Liquid seal bulk feeder for destructive distillation |
Feb. 3, 1998 |
| 5711857 |
Microwave distillation apparatus |
Jan. 27, 1998 |
| 5705037 |
Device for reducing the concentration of CO in the waste gas from coke oven batteries that are heated with lean gas |
Jan. 6, 1998 |
| 5683552 |
Coke oven door liner assembly |
Nov. 4, 1997 |
| 5662779 |
Portable water purification apparatus |
Sep. 2, 1997 |
| 5658434 |
Coke-oven door assembly |
Aug. 19, 1997 |
| 5645694 |
Process and apparatus for vapor compression distillation |
Jul. 8, 1997 |
| 5603810 |
Coke-oven door seal |
Feb. 18, 1997 |
| 5443696 |
Coke oven door |
Aug. 22, 1995 |
| 5417811 |
Closure device for upper head of coking drums |
May. 23, 1995 |
| 5409576 |
Rotating evaporator device for the distillation or concentration of liquids |
Apr. 25, 1995 |
| 5395485 |
Reactor chamber door for large-scale coking reactors |
Mar. 7, 1995 |
| 5385645 |
Heat transfer apparatus with positive drive orbital whip rod |
Jan. 31, 1995 |
| 5384015 |
Arrangement for filling coal in oven chambers of a coke oven battery |
Jan. 24, 1995 |
| 5338409 |
Apparatus for distilling liquids in a vacuum |
Aug. 16, 1994 |
| 5306396 |
Leveling door |
Apr. 26, 1994 |
| 5279713 |
Door |
Jan. 18, 1994 |
| 5254222 |
Sealing device |
Oct. 19, 1993 |
| 5232557 |
Heat transfer plates evaporation and condensation apparatus |
Aug. 3, 1993 |
| RE34184 |
Retrofit coke oven door seal |
Feb. 23, 1993 |
| 5096210 |
Double face oven seal |
Mar. 17, 1992 |
| 5087328 |
Method and apparatus for removing filling gases from coke ovens |
Feb. 11, 1992 |
| 4980029 |
Apparatus for treating waste materials |
Dec. 25, 1990 |
| 4954223 |
Distillation apparatus |
Sep. 4, 1990 |
| 4952284 |
Locking device for an oven door |
Aug. 28, 1990 |
| 4940134 |
Waste solution treatment method and apparatus therefor |
Jul. 10, 1990 |
| 4936954 |
Apparatus for separating liquid mixtures by pervaporation |
Jun. 26, 1990 |
| 4936953 |
Cold trap vapor control device |
Jun. 26, 1990 |
| 4933046 |
Water purifying system |
Jun. 12, 1990 |
| 4927501 |
Oven door |
May. 22, 1990 |
| 4919764 |
Retrofit coke oven door seal |
Apr. 24, 1990 |
| 4917771 |
Distilling apparatus |
Apr. 17, 1990 |
| 4913771 |
Method for dewatering sludge or slurry |
Apr. 3, 1990 |
| 4861435 |
Water distillation apparatus for under-the-sink operation |
Aug. 29, 1989 |
| 4826574 |
Distillation column with helical liquid flow and dissymmetric spacing of the trays |
May. 2, 1989 |
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