Inventor
Alan E. Bell
Inventor
East Windsor, NJ, US
Overview
Patents· 33 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G11Bprimary
G11BInformation storage based on relative movement between record carrier and transducer52%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests15%
H04NPictorial communication, e.g. television7%
G06FElectric digital data processing6%
G01DMeasuring not specially adapted for a specific variable4%
G03CPhotosensitive materials for photographic purposes4%
B65HHandling thin or filamentary material, e.g. sheets, webs, cables2%
G03GElectrography2%
G09GArrangements or circuits for control of indicating devices using static means to present variable information2%
H04HBroadcast communication2%
PatentTitleYear
8,830,806'Optical disc with a theft deterrent coating'20148,218,813'Method for double feed detection'20127,770,030'Content guard system for copy protection of recordable media'20107,533,027'Methods and apparatus for uniquely identifying a large number of film prints'20097,417,713'Optical disc with a theft deterrent coating'20087,380,137'Content guard system for copy protection of recordable media'20087,308,430'Methods and apparatus for uniquely identifying a large number of film prints'20077,158,800'Method and system for limiting content diffusion to local receivers'20077,082,413'System and method for authorized compression of digitized music'20066,832,319'Content guard system for copy protection of recordable media'20045,261,054'System for storing a history of sampled pointer signals when a pointer interrupt routine is interrupted by a higher priority interrupt'19934,958,378'Method and apparatus for detecting changes in raster data'19904,794,560'Eraseable self biasing thermal magneto-optic medium'19884,669,070'Signal format for optical tape record/playback system'19874,661,941'Optical video or data tape record and playback apparatus'19874,425,570'Reversible recording medium and information record'19844,408,213'Reinforced bubble recording medium and information record'19834,387,381'Optical recording medium and information record with tracking aid'19834,329,697'Information record'19824,315,269'Thick protective overcoat layer for optical video disc'19824,300,143'Thin protective overcoat layer for optical video disc'19814,300,227'Replicable optical recording medium'19814,285,056'Replicable optical recording medium'19814,270,132'Information record'19814,233,626'Playback information record using phase cancellation for reading'19804,222,071'Sensitivity information record'19804,216,501'Optical anti-reflective information record'19804,195,313'Antireflective information record having an optically passive transparent layer'19804,195,312'Recorder and antireflective record blank having an optically passive transparent layer'19804,189,735'Record playback apparatus and information record therefor'19804,126,150'Photovoltaic device having increased absorption efficiency'19784,101,907'Overcoat structure for optical video disc'19784,023,185'Ablative optical recording medium'1977Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1977–1987Patents assigned to RCA CORP (20)· patent assignee history
1977–1987Based in East Windsor, NJ, US· patent location history
1988–2010Patents assigned to IBM (5)· patent assignee history
1988–2010Based in San Jose, CA, US· patent location history
1990–1993Patents assigned to SUN MICROSYSTEMS INC (2)· patent assignee history
1990–1993Based in Westford, MA, US· patent location history
2004–2010Patents assigned to INTEL CORP (3)· patent assignee history
2007–2014Patents assigned to WARNER BROS ENTERTAINMENT INC (5)· patent assignee history
2007–2014Based in San Marino, CA, US· patent location history
2012Based in Waterlooville, GB· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| RCA CORP | 20 | 1977–1987 |
| IBM | 5 | 1988–2010 |
| WARNER BROS ENTERTAINMENT INC | 5 | 2007–2014 |
| INTEL CORP | 3 | 2004–2010 |
| SUN MICROSYSTEMS INC | 2 | 1990–1993 |
Locations
| Location | Patents | Span |
|---|---|---|
| East Windsor, New Jersey, US | 19 | 1977–1987 |
| San Marino, California, US | 5 | 2007–2014 |
| San Jose, California, US | 5 | 1988–2010 |
| Westford, Massachusetts, US | 2 | 1990–1993 |
| Waterlooville, GB | 1 | 2012 |