H04N 1/0326
Magnetic heads
Official title: {Magnetic heads}
H04N1/0326 (Magnetic heads) appears on 9 US grants and 0 published applications in this corpus.
Search patents in H04N- Granted patents
- 9
- Published applications
- 0
- Assignees
- 4
- Inventors
- 8
- Latest grant
- 5 Apr 1988
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 4 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Magnetic transducer including a plurality of heads and method for producing the magnetic transducer5 Apr 1988US 4,736,210 ABull SAS
- Magnetic recording apparatus with adjustable line density20 Aug 1985US 4,536,773 AIwatsu Electric Co., Ltd.
- Method and apparatus for forming magnetic latent images25 Jun 1985US 4,525,725 AIwatsu Electric Co., Ltd.
- Method for forming a latent image and apparatus for carrying out the same21 May 1985US 4,518,970 AIwatsu Electric Co., Ltd.
- Magnetic printing machine employing a multi-channel recording head with minimal cross-talk with secondary scanning head movement23 Apr 1985US 4,513,326 AIwatsu Electric Co., Ltd.
No published applications in this class yet.
Most cited
By later US patents
- Multiple head magnetic recording array18US 4,470,051 AFerix Corporation · 1984
- Method and apparatus for recording graphic information magnetically3US 4,107,742 A1978
- Magnetic recording apparatus with adjustable line density3US 4,536,773 AIwatsu Electric Co., Ltd. · 1985
- Transverse magnetic printing head2US 4,291,314 AGeneral Electric Company · 1981
- High resolution magnetic printing head2US 4,342,039 AGeneral Electric Company · 1982