Assignee
COULTER INFORMATION SYSTEMS
19 granted patents·330 citations·filing 1973–1977
Top patents by PatentIndex Score
19 records- 0197US4025339AElectrophotographic film, method of making the same and photoconductive coating used therewithCOULTER INFORMATION SYSTEMS·Filed 1976·Granted May 24, 1977·55 cites·88 claims
- 0295US4013539AThin film deposition apparatusCOULTER INFORMATION SYSTEMS·Filed 1974·Granted Mar 22, 1977·50 cites·36 claims
- 0391US4014779ASputtering apparatusCOULTER INFORMATION SYSTEMS·Filed 1975·Granted Mar 29, 1977·33 cites·19 claims
- 0489US4026787AThin film deposition apparatus using segmented target meansCOULTER INFORMATION SYSTEMS·Filed 1975·Granted May 31, 1977·29 cites·14 claims
- 0584US4028596ACorona power supply circuitCOULTER INFORMATION SYSTEMS·Filed 1975·Granted Jun 7, 1977·32 cites·25 claims
- 0682US4170475AHigh speed electrophotographic methodCOULTER INFORMATION SYSTEMS·Filed 1977·Granted Oct 9, 1979·20 cites·8 claims
- 0779US4173407AElectrophotographic contact duplicating apparatus and methodCOULTER INFORMATION SYSTEMS·Filed 1977·Granted Nov 6, 1979·11 cites·39 claims
- 0873US3976555AMethod and apparatus for supplying background gas in a sputtering chamberCOULTER INFORMATION SYSTEMS·Filed 1975·Granted Aug 24, 1976·33 cites·17 claims
- 0966US3986085ACorona power supply circuitCOULTER INFORMATION SYSTEMS·Filed 1975·Granted Oct 12, 1976·11 cites·32 claims
- 1063US3936178AApparatus for large scale screen display of imagesCOULTER INFORMATION SYSTEMS·Filed 1973·Granted Feb 3, 1976·9 cites·37 claims
- 1152US4076406AMethod of and apparatus for toning electrophotographic filmCOULTER INFORMATION SYSTEMS·Filed 1976·Granted Feb 28, 1978·8 cites·19 claims
- 1246US4006986AImage recording apparatus for electrophotographic filmCOULTER INFORMATION SYSTEMS·Filed 1975·Granted Feb 8, 1977·5 cites·8 claims
- 1345US3958162AMethod and apparatus for charging an electrophotographic memberCOULTER INFORMATION SYSTEMS·Filed 1975·Granted May 18, 1976·6 cites·32 claims
- 1444US3973956AElectrophotographic process employing signal comparisonCOULTER INFORMATION SYSTEMS·Filed 1974·Granted Aug 10, 1976·4 cites·13 claims
- 1543US3951541ADuplicator processorCOULTER INFORMATION SYSTEMS·Filed 1973·Granted Apr 20, 1976·4 cites·11 claims
- 1639US4099877ALens testing method and apparatusCOULTER INFORMATION SYSTEMS·Filed 1976·Granted Jul 11, 1978·8 cites·27 claims
- 1738US3985437AElectrostatic image recording device having partially collapsible toner applicatorCOULTER INFORMATION SYSTEMS·Filed 1975·Granted Oct 12, 1976·3 cites·6 claims
- 1837US4049963APhotoelectric measuring deviceCOULTER INFORMATION SYSTEMS·Filed 1976·Granted Sep 20, 1977·6 cites·5 claims
- 1928US3978380AReciprocating corona producing apparatusCOULTER INFORMATION SYSTEMS·Filed 1975·Granted Aug 31, 1976·3 cites·14 claims
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