Method of making a metallized video disc having an insulating layer thereon
US4018945A · kind A · utility
15Cited by
6References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 19, 1975 |
| Grant date | Apr 19, 1977 |
| Priority date | — |
| Expiry date | Jun 19, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B23/0057
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A polymeric film applied to a video disc by glow discharge techniques is treated with a subsequent glow discharge in air to improve wear properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.