G03B 1/52
Pneumatic pressure devices
G03B1/52 (Pneumatic pressure devices) appears on 11 US grants and 0 published applications in this corpus.
Search patents in G03B- Granted patents
- 11
- Published applications
- 0
- Assignees
- 8
- Inventors
- 12
- Latest grant
- 2 Apr 2002
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Pneumatic flotation device for continuous web processing and method of making the pneumatic flotation device2 Apr 2002US 6,364,247 B1
- Film advance mechanism for motion picture apparatus24 Nov 1998US 5,841,514 AIwerks Entertainment, Inc.
- Film advance mechanism for motion picture apparatus27 May 1997US 5,633,696 A
- Motion picture projection apparatus23 Aug 1994US 5,341,182 AL. Ron Schmidt and Associates, Inc.
- Film flatness keeping device24 Dec 1991US 5,075,704 AKYOCERA Corporation
No published applications in this class yet.
Most cited
By later US patents
- Pneumatic flotation device for continuous web processing and method of making the pneumatic flotation device29US 6,364,247 B12002
- Motion picture projection apparatus14US 5,341,182 AL. Ron Schmidt and Associates, Inc. · 1994
- Air-platen bearing9US 4,411,503 AHarris Corporation · 1983
- Film constraint and film writing system4US 4,973,150 AEastman Kodak Company · 1990
- Film constraint and illumination system4US 4,973,151 AEastman Kodak Company · 1990