SUMMAGRAPHICS CORPORATION
Patent Owner
Stats
- 0 US PATENTS IN FORCE
- 0 US APPLICATIONS PENDING
- Mar 16, 1993 most recent publication
Details
- 0 Issued Patents
- 0 Issued in last 3 years
- 0 Published in last 3 years
- 1,085 Total Citation Count
- Feb 22, 1979 Earliest Filing
- 35 Expired/Abandoned/Withdrawn Patents
Patent Activity in the Last 10 Years
Technologies
- No Technology to Display
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Recent Publications
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Recent Patents
- No Recent Patents to Display
Expired/Abandoned/Withdrawn Patents
Patent #
Title
Status
Filing Date
Issue/Pub Date
Intl Class
5194852 Electro-optic slate for direct entry and display and/or storage of hand-entered textual and graphic informationExpiredJun 16, 89Mar 16, 93[G09G]
5101487 Method for retrieving compressed data from a memory storing a look-up tableExpiredMay 16, 89Mar 31, 92[G06F]
5065145 Method and apparatus for producing signals corresponding to the position of a cursorExpiredOct 06, 89Nov 12, 91[G09G]
4896002 Method and apparatus for displaying raw tablet location dataExpiredJun 19, 89Jan 23, 90[G08C]
4857903 Electro-optical mouse with improved resolution for compensation of optical distortionExpiredMay 06, 86Aug 15, 89[G09G]
4839634 Electro-optic slate for input/output of hand-entered textual and graphic informationExpiredDec 01, 86Jun 13, 89[G09G]
4831566 Method and apparatus for calibration of a charge ratio digitizerExpiredMar 20, 87May 16, 89[G08C, G01B]
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