H03H 9/027
U-shaped grating lines
Official title: {U-shaped grating lines}
H03H9/027 (U-shaped grating lines) appears on 9 US grants and 0 published applications in this corpus.
Search patents in H03H- Granted patents
- 9
- Published applications
- 0
- Assignees
- 7
- Inventors
- 15
- Latest grant
- 26 Apr 1994
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Low loss surface wave filter26 Apr 1994US 5,307,035 AThomson-CSF
- Surface acoustic wave device and method utilizing plural multi-strip couplers5 May 1992US 5,111,167 ASawtek, Inc.
- Low-loss acoustic wave filter device23 Apr 1985US 4,513,261 ATRW Inc.
- Band pass filter device28 Aug 1984US 4,468,642 AHitachi, Ltd.
- Shallow bulk acoustic wave devices14 Sep 1982US 4,349,794 ATRW Inc.
No published applications in this class yet.
Most cited
By later US patents
- Thin-film integrated circuit with tank circuit characteristics and applications to thin-film filters and oscillators56US 4,166,258 AInternational Business Machines Corporation · 1979
- Band pass filter device25US 4,468,642 AHitachi, Ltd. · 1984
- Shallow bulk acoustic wave devices17US 4,349,794 ATRW Inc. · 1982
- Low loss surface wave filter11US 5,307,035 AThomson-CSF · 1994
- Low-loss acoustic wave filter device10US 4,513,261 ATRW Inc. · 1985