B01D 2201/22
Filtering bands with supporting discs
B01D2201/22 (Filtering bands with supporting discs) appears on 7 US grants and 0 published applications in this corpus.
Search patents in B01D- Granted patents
- 7
- Published applications
- 0
- Assignees
- 6
- Inventors
- 14
- Latest grant
- 1 Aug 2000
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Gravity liquid filtration apparatus1 Aug 2000US 6,095,343 A
- Liquid filtration apparatus with adjustable media guide and improved segregation of clean and contaminated liquid24 Aug 1993US 5,238,565 AFilter Tech, Inc.
- Apparatus for rewinding liquid filtration media29 Jun 1993US 5,222,680 AFilter Tech, Inc.
- Filter for filtering liquids27 Nov 1990US 4,973,407 ADipl.-Ing. Erich Fetzer GmbH & Co.
- Gravity liquid filtration apparatus with rotatable discs that mount swinging discharge elements therebetween11 Aug 1987US 4,686,042 AEMCO Filtration Systems, Inc.
No published applications in this class yet.
Most cited
By later US patents
- Strainer26US 4,014,796 ANifco Inc. · 1977
- Continuous belt filter and filtration method18US 4,057,437 ASparkler Mfg. Co. · 1977
- Liquid filtration apparatus with adjustable media guide and improved segregation of clean and contaminated liquid8US 5,238,565 AFilter Tech, Inc. · 1993
- Gravity liquid filtration apparatus with rotatable discs that mount swinging discharge elements therebetween5US 4,686,042 AEMCO Filtration Systems, Inc. · 1987
- Filter for filtering liquids4US 4,973,407 ADipl.-Ing. Erich Fetzer GmbH & Co. · 1990