Inventor
William A. Shumate
Inventor
San Diego, CA, US
Overview
Patents· 5 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G11Cprimary
G11CStatic stores15%
H04NPictorial communication, e.g. television15%
G06FElectric digital data processing8%
H03MCoding8%
H04HBroadcast communication8%
H04KSecret communication8%
H10DInorganic electric semiconductor devices8%
H10PGeneric processes or apparatus for the manufacture or treatment of devices covered by class h108%
H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h108%
Y04SSystems integrating technologies related to power network operation, communication or information technologies for improving the electrical power generation, transmission, distribution, management or usage, i.e. smart grids8%
PatentTitleYear
5,091,936'System for communicating television signals or a plurality of digital audio signals in a standard television line allocation'19925,083,293'Prevention of alteration of data stored in secure integrated circuit chip memory'19925,014,310'Video scrambling and descrambling by varying sequence of segments in adjacent video information lines'19914,933,898'Secure integrated circuit chip with conductive shield'19904,879,720'Decoder ring system'1989Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1989Patents assigned to MA COM GOV SYSTEMS (1)· patent assignee history
1989–1992Based in San Diego, CA, US· patent location history
1990–1992Patents assigned to GEN INSTRUMENT CORP (4)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| GEN INSTRUMENT CORP | 4 | 1990–1992 |
| MA COM GOV SYSTEMS | 1 | 1989 |
Locations
| Location | Patents | Span |
|---|---|---|
| San Diego, California, US | 5 | 1989–1992 |