Inventor
Graham S. Stubbs
Inventor
Poway, CA, US
Overview
Patents· 7 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H04Nprimary
H04NPictorial communication, e.g. television100%
PatentTitleYear
5,394,470'Horizontal pulse augmentation of a video signal'19955,003,590'Encoding an optical video disc to inhibit video tape recording'19914,633,309'Cable television master/slave decoder control'19864,454,543'Dynamic video scrambling'19844,340,906'Video signal coding by video signal polarity reversal on the basis of brightness level comparison'19824,336,553'Method of coding audio and video signals'19824,323,922'Television coding system with channel level identification'1982Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1982–1986Patents assigned to OAK INDUSTRIES INC (4)· patent assignee history
1982Patents assigned to OAK IND (1)· patent assignee history
1982–1995Based in Poway, CA, US· patent location history
1991–1995Patents assigned to EIDAK CORP (2)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| OAK INDUSTRIES INC | 4 | 1982–1986 |
| EIDAK CORP | 2 | 1991–1995 |
| OAK IND | 1 | 1982 |
Locations
| Location | Patents | Span |
|---|---|---|
| Poway, California, US | 7 | 1982–1995 |