F04B 39/0077
By generating oil foam
Official title: {by generating oil foam}
F04B39/0077 (By generating oil foam) appears on 7 US grants and 0 published applications in this corpus.
Search patents in F04B- Granted patents
- 7
- Published applications
- 0
- Assignees
- 4
- Inventors
- 7
- Latest grant
- 19 Mar 1996
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 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 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Method of making foam in an energy efficient compressor19 Mar 1996US 5,499,908 ATecumseh Products Company
- Method and apparatus for acoustic attenuation in variable speed compressors7 Jan 1992US 5,077,981 ACarrier Corporation
- Refrigerant injection into oil for sound reduction9 Apr 1991US 5,005,376 ACarrier Corporation
- Refrigerant injection into oil for sound reduction13 Mar 1990US 4,907,414 ACarrier Corporation
- Noise reduction using suction gas to foam oil12 Jan 1988US 4,718,829 AAmerican Standard Inc.
No published applications in this class yet.
Most cited
By later US patents
- Oil stirrer for refrigeration compressor13US 4,127,994 AWhite-Westinghouse Corporation · 1978
- Method of making foam in an energy efficient compressor10US 5,499,908 ATecumseh Products Company · 1996
- Noise dampening means in refrigeration motor-compressor units and method6US 4,063,853 ACarrier Corporation · 1977
- Refrigerant injection into oil for sound reduction5US 4,907,414 ACarrier Corporation · 1990
- Noise reduction using suction gas to foam oil2US 4,718,829 AAmerican Standard Inc. · 1988