Inventor
Douglas B. Evans
Inventor
San Francisco, CA, US
Overview
Patents· 13 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G06Fprimary
G06FElectric digital data processing26%
G06TImage data processing or generation, in general16%
H04NPictorial communication, e.g. television16%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests14%
H04LTransmission of digital information, e.g. telegraphic communication7%
B42DBooks2%
G06KGraphical data reading2%
G06QInformation and communication technology [ict] specially adapted for administrative, commercial, financial, managerial or supervisory purposes2%
G06VImage or video recognition or understanding2%
G07CTime or attendance registers2%
PatentTitleYear
8,036,420'Substituting or replacing components in sound based on steganographic encoding'20117,965,864'Data transmission by extracted or calculated identifying data'20117,773,770'Substituting or replacing components in media objects based on steganographic encoding'20107,545,951'Data transmission by watermark or derived identifier proxy'20097,505,605'Portable devices and methods employing digital watermarking'20097,362,879'Substituting objects based on steganographic encoding'20087,209,573'Substituting images in copies based on digital watermarks'20077,171,018'Portable devices and methods employing digital watermarking'20076,965,682'Data transmission by watermark proxy'20056,917,691'Substituting information based on watermark-enable linking'20056,577,746'Watermark-based object linking and embedding'2003D0283896'Alternator stand'1986D0283326'Engine fan housing'1986Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1986Patents assigned to EVANS DOUGLAS B (2)· patent assignee history
1986Patents assigned to SYMONDS ROBERT G (2)· patent assignee history
1986Based in Van Nuys, CA, US· patent location history
2003–2011Patents assigned to DIGIMARC CORP (11)· patent assignee history
2003–2011Based in San Francisco, CA, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| DIGIMARC CORP | 11 | 2003–2011 |
| EVANS DOUGLAS Bself | 2 | 1986 |
| SYMONDS ROBERT G | 2 | 1986 |
Locations
| Location | Patents | Span |
|---|---|---|
| San Francisco, California, US | 11 | 2003–2011 |
| Van Nuys, California, US | 2 | 1986 |