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Class Information
Number: 210/655
Name: Liquid purification or separation > Processes > Liquid/liquid solvent or colloidal extraction or diffusing or passing through septum selective as to material of a component of liquid; such diffusing or passing being effected by other than only an ion exchange or sorption process > Diffusing or passing through septum selective as to material of a component of liquid > Filtering through membrane (e.g., ultrafiltration) > Hyperfiltration (e.g., reverse osmosis, etc.) > Utilizing specified membrane material > Cellulosic
Description: Process in which the membrane is constituted of a naturally occurring polymeric carbohydrate, usually derived from wood, cotton, or flax.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6972093 |
Onboard fuel separation apparatus for an automobile |
Dec. 6, 2005 |
| 6632366 |
Cellulose compound hollow fiber membrane |
Oct. 14, 2003 |
| 6387272 |
Process for utilizing liquid manure material |
May. 14, 2002 |
| 6358754 |
(Bio)chemical reagent solid phases, process for their production and their applications |
Mar. 19, 2002 |
| 6350621 |
(Bio)chemical reagent solid phases, process for their production and their applications |
Feb. 26, 2002 |
| 5858238 |
Salvage of autologous blood via selective membrane/sorption technologies |
Jan. 12, 1999 |
| 5846213 |
Cellulose membrane and method for manufacture thereof |
Dec. 8, 1998 |
| 5624566 |
Method and apparatus for recovering carboxylic acids from dilute solutions |
Apr. 29, 1997 |
| 5508196 |
Method of continuously preparing a sterile culture medium |
Apr. 16, 1996 |
| 5492625 |
Method of recovering carboxylic acids from dilute solutions |
Feb. 20, 1996 |
| 5491259 |
Process to produce aminocarboxylic acids containing low residual salt |
Feb. 13, 1996 |
| 5456842 |
Method for recycling cleaning fluid |
Oct. 10, 1995 |
| 5401499 |
Method of adsorbing pyrogens |
Mar. 28, 1995 |
| 5259972 |
Apparatus and method for purifying water |
Nov. 9, 1993 |
| 5258122 |
Cross-flow filter device with pressure-balancing feature |
Nov. 2, 1993 |
| 5221483 |
Process and apparatus for removal of DNA, viruses and endotoxins |
Jun. 22, 1993 |
| 5165919 |
Medical material containing covalently bound heparin and process for its production |
Nov. 24, 1992 |
| 5076933 |
Process and apparatus for removal of DNA and viruses |
Dec. 31, 1991 |
| 5045206 |
Selective multi-ring aromatics extraction using a porous, non-selective partition membrane barrier |
Sep. 3, 1991 |
| 5028337 |
Coated membranes |
Jul. 2, 1991 |
| 5015387 |
Method for activating cellulosic membrane, activated cellulosic membrane, method of fixing physiologically active substance on the activated cellulosic membrane and physiologically active |
May. 14, 1991 |
| 4931181 |
Composite membranes for fluid separations |
Jun. 5, 1990 |
| 4919865 |
Composite membranes of poly (methyl methacrylate) blends, their manufacture and their use |
Apr. 24, 1990 |
| 4906374 |
Filtration media with low protein adsorbability |
Mar. 6, 1990 |
| 4894165 |
Rejection enhancing coatings for reverse osmosis membranes |
Jan. 16, 1990 |
| 4888116 |
Method of improving membrane properties via reaction of diazonium compounds or precursors |
Dec. 19, 1989 |
| 4880511 |
Process and apparatus for recovery of precious metal compound |
Nov. 14, 1989 |
| 4857201 |
Reverse osmosis cellulose and cellulosic membranes prepared by repeated drying and rewetting |
Aug. 15, 1989 |
| 4853129 |
Modified regenerated cellulose membrane for non-aqueous separations |
Aug. 1, 1989 |
| 4812238 |
Membranes prepared via reaction of diazonium compounds or precursors |
Mar. 14, 1989 |
| 4810388 |
Portable intravenous solutions and water for injection apparatus and method |
Mar. 7, 1989 |
| 4808315 |
Porous hollow fiber membrane and a method for the removal of a virus by using the same |
Feb. 28, 1989 |
| 4784771 |
Method and apparatus for purifying fluids |
Nov. 15, 1988 |
| 4770786 |
Separation of organic liquid from mixture employing porous polymeric ultrafiltration membrane |
Sep. 13, 1988 |
| 4759850 |
Membrane process for separating methanol from methanol/hydrocarbon solutions |
Jul. 26, 1988 |
| 4758347 |
Process for purifying dyeing wastewaters |
Jul. 19, 1988 |
| 4735193 |
Separation of a monosaccharide with mixed matrix membranes |
Apr. 5, 1988 |
| 4668396 |
Dialysis membrane of modified cellulose with improved biocompatibility |
May. 26, 1987 |
| 4510047 |
Selective extraction solvent recovery using regenerated cellulose membrane under reverse osmosis conditions |
Apr. 9, 1985 |
| 4305823 |
Semipermeable membranes from modified polymers |
Dec. 15, 1981 |
| 4247401 |
Reverse osmosis separation process using porous asymmetric acetyl cellulose membrane |
Jan. 27, 1981 |
| 4231865 |
Backwashing reverse-osmosis and ultrafiltration membranes by electro-osmosis |
Nov. 4, 1980 |
| 4147622 |
Process for manufacturing membranes for osmotic separation |
Apr. 3, 1979 |
| 4071445 |
Method and apparatus for treating waste water on ships |
Jan. 31, 1978 |
| 4040834 |
Regeneration of photographic processing solutions |
Aug. 9, 1977 |
| 3953580 |
Boric acid process |
Apr. 27, 1976 |
| 3939070 |
Method and installation for the treatment of waste water to form useful water |
Feb. 17, 1976 |
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