G03C 5/3956
Microseparation techniques using membranes
Official title: {Microseparation techniques using membranes, e.g. reverse osmosis, ion exchange, resins, active charcoal (G03C5/3954 takes precedence)}
G03C5/3956 (Microseparation techniques using membranes) appears on 42 US grants and 4 published applications in this corpus.
Search patents in G03C- Granted patents
- 42
- Published applications
- 4
- Assignees
- 17
- Inventors
- 67
- Latest grant
- 14 Feb 2012
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 3 | 0 |
| 1998 | 0 | 0 |
| 1999 | 5 | 0 |
| 2000 | 3 | 0 |
| 2001 | 2 | 0 |
| 2002 | 2 | 2 |
| 2003 | 1 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Method for treating iron in a silver recovery process14 Feb 2012US 8,114,189 B2ARS Services, LLC
- Apparently dry waste management system18 May 2004US 6,736,977 B1Eastman Kodak Company
- Method and system for processing photographic material which includes water recovery from humid air for re-use in the processing21 Jan 2003US 6,508,598 B2Eastman Kodak Company
- Process to improve the functioning of a membrane of a nanofiltration device10 Dec 2002US 6,492,098 B2Eastman Kodak Company
- Method and system for processing photographic material which includes water recovery from humid air for re-use in the processing7 May 2002US 6,383,727 B1Eastman Kodak Company
- Method for treating iron in a silver recovery process20 May 2010US 2010/0122956 A1ARS Services, LLC
- Method for processing a color photographic paper18 Sep 2003US 2003/0173298 A1Eastman Kodak Company
- Method and system for processing photographic material which includes water recovery from humid air for re-use in the processing1 Aug 2002US 2002/0102106 A1Eastman Kodak Company
- Process to improve the functioning of a membrane of a nanofiltration device14 Mar 2002US 2002/0031733 A1Eastman Kodak Company
Most cited
By later US patents
- Apparently dry waste management system74US 6,736,977 B1Eastman Kodak Company · 2004
- Silver removal with halogen impregnated activated carbon65US 4,394,354 ACalgon Carbon Corporation · 1983
- Methods of removing silver28US 5,575,915 AFuji Photo Film Co., Ltd. · 1996
- Ultra low volume processing of and cartridge for photographic fixer solution to recover silver therefrom19US 4,240,617 AB. R. MacKay & Sons. Inc. · 1980
- Electrodialyzer and method of regenerating waste photographic processing solution15US 4,313,808 AFuji Photo Film Co., Ltd. · 1982