Inventor · disambiguated record
James R. Ligman
Also filed as: KAUFMAN PETER · LIGMAN JAMES R · LIGMAN JAMES RAYMOND
9 granted patents·445 citations·filing 1975–1995
91Inventor score
Top patents by PatentIndex Score
9 records- 0191US5828200AMotor control system for variable speed induction motorsPHASE III·Filed 1995·Granted Oct 27, 1998·151 cites·19 claims
- 0290US4107995ARecorder for decompression dataLIGMAN JAMES RAYMOND·Filed 1976·Granted Aug 22, 1978·63 cites·16 claims
- 0384US4206491AEntry systemKKF CORP·Filed 1979·Granted Jun 3, 1980·79 cites·5 claims
- 0476US5555595ACarpet cleaner unit with adjustable power controlBETTER CLEANING SYSTEM INC·Filed 1995·Granted Sep 17, 1996·55 cites·12 claims
- 0576US4009419ASafety circuit for video diverGEN AQUADYNE INC·Filed 1975·Granted Feb 22, 1977·24 cites·6 claims
- 0673US4658897ADownhole transducer systemsPIEZO SONA TOOL CORP·Filed 1984·Granted Apr 21, 1987·40 cites·13 claims
- 0758US4512402ACasing tuned downhole toolSONA TOOL DEV LTD·Filed 1983·Granted Apr 23, 1985·26 cites·19 claims
- 0843US4737767ASolid state keyboardKDC CORP·Filed 1982·Granted Apr 12, 1988·6 cites·34 claims
- 0933US4658197AMotor control circuitCASABLANCA FAN COMPANY INC·Filed 1980·Granted Apr 14, 1987·1 cites·14 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →