G11B 3/445
Styli particularly adapted for sensing video discs
Official title: {Styli particularly adapted for sensing video discs}
G11B3/445 (Styli particularly adapted for sensing video discs) appears on 12 US grants and 0 published applications in this corpus.
Search patents in G11B- Granted patents
- 12
- Published applications
- 0
- Assignees
- 6
- Inventors
- 18
- Latest grant
- 22 May 1984
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 3 | 0 |
| 1984 | 2 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Keel-tipped stylus, and method and device for making keel-tipped stylus22 May 1984US 4,450,551 ASanyo Electric Co., Ltd.
- Stylus for detecting signals recorded as geometric variations and method for making the same17 Jan 1984US 4,426,660 AVictor Company of Japan, Ltd.
- Video disc stylus cartridge with protective member15 Feb 1983US 4,374,434 ARCA Corporation
- Method for manufacturing diamond pick-up stylus8 Feb 1983US 4,372,042 ADiamagnetics, Inc.
- Spinel video disc playback stylus25 Jan 1983US 4,370,739 ARCA Corporation
No published applications in this class yet.
Most cited
By later US patents
- Keel-tipped stylus, and method and device for making keel-tipped stylus24US 4,450,551 ASanyo Electric Co., Ltd. · 1984
- Apparatus for embossing information on a disc8US 3,946,149 ACBS Inc. · 1976
- Method for forming a narrowed-electrode pickup stylus for video disc systems8US 4,098,030 ARCA Corporation · 1978
- Removable protective cover for a video disc stylus cartridge5US 4,342,394 ARCA Corporation · 1982
- Apparatus for measuring the characteristics of a wideband electromechanical recording system having a transformer4US 4,295,216 ARCA Corporation · 1981