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Class Information
Number: 159/22
Name: Concentrating evaporators > Closed evaporating chambers
Description: Vessels provided with covers adapted to close the surface of the evaporating liquid from the atmosphere.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6506284 |
Reduced-pressure distillation system |
Jan. 14, 2003 |
| 6423187 |
Heat exchanger mechanism using capillary wipers for a thin film distiller |
Jul. 23, 2002 |
| 5964982 |
Method of removing encrustations in evaporation plants |
Oct. 12, 1999 |
| 5874525 |
Devolatilizer tray array |
Feb. 23, 1999 |
| 5858178 |
Process and device for preparing and/or extracting samples using a vaporizable agent at high temperature |
Jan. 12, 1999 |
| 5711856 |
Asphalt extracting apparatus |
Jan. 27, 1998 |
| 5639427 |
Sulfuric acid preparation assembly |
Jun. 17, 1997 |
| 5338409 |
Apparatus for distilling liquids in a vacuum |
Aug. 16, 1994 |
| 5282927 |
Concentrating evaporator |
Feb. 1, 1994 |
| 5273719 |
Urine treating device |
Dec. 28, 1993 |
| 5248394 |
Liquid purifying/distillation device |
Sep. 28, 1993 |
| 5149399 |
Liquid evaporator |
Sep. 22, 1992 |
| 5112441 |
Process for the recovery of heat and chemicals from spent liquor |
May. 12, 1992 |
| 4940134 |
Waste solution treatment method and apparatus therefor |
Jul. 10, 1990 |
| 4913771 |
Method for dewatering sludge or slurry |
Apr. 3, 1990 |
| 4880533 |
Apparatus and system for treating waste water and sludge |
Nov. 14, 1989 |
| 4584064 |
Device and installations for the distillation by thin layer evaporation particularly of hydrocarbons, and process for operating this device |
Apr. 22, 1986 |
| 4574036 |
Method and an installation for purifying industrial waste water, particularly process water from dyeing works |
Mar. 4, 1986 |
| 4346057 |
Test tube evaporator |
Aug. 24, 1982 |
| 4313786 |
Magnetron solvent recovery system |
Feb. 2, 1982 |
| 4246065 |
Radioactive waste concentration |
Jan. 20, 1981 |
| 4003713 |
Multiple test tube evaporator |
Jan. 18, 1977 |
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