C02F 3/203
Swing diffusers
Official title: {Swing diffusers}
C02F3/203 (Swing diffusers) appears on 9 US grants and 2 published applications in this corpus.
Search patents in C02F- Granted patents
- 9
- Published applications
- 2
- Assignees
- 6
- Inventors
- 16
- Latest grant
- 4 Jan 2011
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 1 | 0 |
| 2011 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Hybrid diffuser system headloss balancing4 Jan 2011US 7,862,014 B2Siemens Water Technologies Corp.
- Swing-type submersible floating aerator16 Feb 2010US 7,661,659 B2
- Biological treatment of wastewater22 Sep 1998US 5,811,011 AParkson Corporation
- Aeration of cesspools11 Aug 1987US 4,686,045 A
- Ring channel aeration apparatus and method29 May 1984US 4,451,373 AWater Pollution Control Corporation
Most cited
By later US patents
- Method and apparatus for raising an aeration apparatus for liquids21US 4,273,732 AWilhelm Roediger GmbH & Co. · 1981
- Aeration system with foldable low-loss downcomers and method of operation thereof16US 4,048,267 AChicago Bridge & Iron Company · 1977
- Swing diffuser15US 4,294,696 AWater Pollution Control Corporation · 1981
- Biological treatment of wastewater9US 5,811,011 AParkson Corporation · 1998
- Ring channel aeration apparatus and method8US 4,451,373 AWater Pollution Control Corporation · 1984