Inventor · disambiguated record
Louis F. Schaefer
Also filed as: SCHAEFER LOUIS F
21 granted patents·413 citations·filing 1973–1994
96Inventor score
Files withSAMSUNG ELECTRONICS CO LTD3SAVIN BUSINESS MACHINES CORP3STANFORD RES INST INT3STANFORD RESEARCH INST3LASER FILE2
Top patents by PatentIndex Score
21 records- 0193US4141347AReal-time ultrasonic B-scan imaging and Doppler profile display system and methodSTANFORD RES INST INT·Filed 1976·Granted Feb 27, 1979·108 cites·33 claims
- 0291US3937066AUltrasonic camera system and methodSTANFORD RESEARCH INST·Filed 1973·Granted Feb 10, 1976·60 cites·33 claims
- 0389US4730293ADual beam optical data systemDREXLER TECH·Filed 1986·Granted Mar 8, 1988·43 cites·22 claims
- 0484US3980811AContacting pickup optical reproduction systemJEOL LTD·Filed 1974·Granted Sep 14, 1976·27 cites·5 claims
- 0579US4205338ADisc recording tracking systemLASER FILE·Filed 1977·Granted May 27, 1980·20 cites·14 claims
- 0679US3959770AMethod and apparatus for error compensation in multichannel systemsSTANFORD RESEARCH INST·Filed 1974·Granted May 25, 1976·27 cites·15 claims
- 0776US3970036AToner concentration detector for dry powder magnetic brush toning systemSAVIN BUSINESS MACHINES CORP·Filed 1974·Granted Jul 20, 1976·15 cites·17 claims
- 0875US4410968AMethod and apparatus for recording on a disk supported deformable metallic filmSIWECKI THOMAS LEE·Filed 1980·Granted Oct 18, 1983·21 cites·31 claims
- 0975US3981267AElectrophotographic liquid developing systemSAVIN BUSINESS MACHINES CORP·Filed 1975·Granted Sep 21, 1976·15 cites·23 claims
- 1069US4006292AInformation recording and reproducing system with plural information tracks within a single grooveSHARP KK·Filed 1974·Granted Feb 1, 1977·11 cites·2 claims
- 1167US3999687AToner concentration detectorSAVIN BUSINESS MACHINES CORP·Filed 1975·Granted Dec 28, 1976·23 cites·9 claims
- 1243US4310847AColor television film scanning system using uniform motion and line arraysWORLD DEV LAB·Filed 1978·Granted Jan 12, 1982·7 cites·12 claims
- 1343US3959732ASignal processing system and methodSTANFORD RESEARCH INST·Filed 1974·Granted May 25, 1976·6 cites·13 claims
- 1442US5321684ABidirectional sinusoidal scanning systemSTANFORD RES INST INT·Filed 1992·Granted Jun 14, 1994·7 cites·13 claims
- 1540US4714310AMethod and apparatus for dynamic focusing control of a radiant energy beamSTANFORD RES INST INT·Filed 1986·Granted Dec 22, 1987·8 cites·2 claims
- 1635US4791494AMultiple variable light source printerSAVIN CORP·Filed 1984·Granted Dec 13, 1988·3 cites·5 claims
- 1734US5604838AMethod and apparatus for recording and reading a multiplexed video signalSAMSUNG ELECTRONICS CO LTD·Filed 1994·Granted Feb 18, 1997·3 cites·13 claims
- 1832US4261007AColor television encoding and decoding systemLASER FILE·Filed 1979·Granted Apr 7, 1981·2 cites·37 claims
- 1931US5557418AVideo tape format for providing special effects capabilitiesSAMSUNG ELECTRONICS CO LTD·Filed 1993·Granted Sep 17, 1996·1 cites·16 claims
- 2028US5343458AMethod of storing digital video, audio and control information on an an optical storage mediumSAMSUNG ELECTRONICS CO LTD·Filed 1992·Granted Aug 30, 1994·1 cites·18 claims
- 2122US4480179AApparatus for coding and/or decoding a documentESSELTE NORDIA AB·Filed 1982·Granted Oct 30, 1984·5 cites·7 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →