NATIONAL COMPUTER SYSTEMS, INC.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
G06K RECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS 2196
 
  
 
B65H HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES178
 
  
 
G09B EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS 142
 
  
 
H04N PICTORIAL COMMUNICATION, e.g. TELEVISION 1241

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6459509 Optical scanning device having a calibrated pixel output and a method for calibrating such a deviceJun 16, 00Oct 01, 02[H04N]
5711673 Method for interpreting a plurality of response marks on a scannable surfaceFeb 24, 95Jan 27, 98[G06K]
5195738 Single sheet picking and transport mechanismMar 25, 91Mar 23, 93[B65H]
5184003 Scannable form having a control mark column with encoded data marksJan 24, 92Feb 02, 93[G09B, G06K]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5531429 Variable printing and selective binding of bookletsExpiredMar 29, 95Jul 02, 96[B42C]
5262624 Opposite surface scanning of a mark sense formExpiredFeb 01, 93Nov 16, 93[G06K]
D338130 JugExpiredSep 03, 91Aug 10, 93[]
5103490 Method and apparatus for storing and merging multiple optically scanned imagesExpiredJun 13, 90Apr 07, 92[G06K]
5001330 Optically scanned document with fail-safe markingExpiredMar 02, 88Mar 19, 91[G06K]
4937439 Method and system for creating and scanning a customized survey formExpiredMay 13, 88Jun 26, 90[G09B, G06F, G06K]
4857715 Overprint registration system for printing a customized survey form and scannable form thereforExpiredApr 01, 88Aug 15, 89[B06K]
4794241 Scannable document velocity detectorExpiredJan 21, 88Dec 27, 88[G06F]
4694405 Laser printer controller data alignment deviceExpiredJul 09, 85Sep 15, 87[G01D]
4547666 Mark array sense reader with sequential output signalsExpiredJan 19, 83Oct 15, 85[H04N]
4471217 Optical scanning systemExpiredJun 01, 79Sep 11, 84[G06K]
4448443 Continuous form book processing kitExpiredDec 30, 81May 15, 84[B42D, B32B]
4357596 Multi-line scan mark verification circuitExpiredMay 30, 80Nov 02, 82[G06K]
4356390 Optical path monitoring circuit for a document scannerExpiredMar 11, 81Oct 26, 82[G06K]
4334181 Motor brakeExpiredOct 25, 79Jun 08, 82[H02P]
4306712 Document shunt mechanism for a document transport systemExpiredOct 25, 79Dec 22, 81[B65H]
4300791 Optically scannable answer sheet booklet with sequence bars printed thereon and method of producing sameExpiredMar 27, 80Nov 17, 81[B42F, B65H]
4300123 Optical reading systemExpiredJan 02, 79Nov 10, 81[G06K]
4298859 Digital video line delay circuitExpiredMay 21, 80Nov 03, 81[G06K]
4268746 Document feed jam detector for a document reading apparatusExpiredOct 25, 79May 19, 81[B65H]

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