Individual holder
PRITCHARD ERIC K
US·15 granted patents·492 citations·filing 1976–1993
Individually held — no corporate assignee on record.
Top patents by PatentIndex Score
15 records- 0196US4262336AMulti-axis contouring control systemPRITCHARD ERIC K·Filed 1979·Granted Apr 14, 1981·89 cites·57 claims
- 0295US4995084ASemiconductor emulation of tube amplifiersPRITCHARD ERIC K·Filed 1988·Granted Feb 19, 1991·56 cites·38 claims
- 0394US4087732ADigital stepping motor device circuitPRITCHARD ERIC K·Filed 1976·Granted May 2, 1978·41 cites·10 claims
- 0493US4214823AAnimation stand control systemPRITCHARD ERIC K·Filed 1979·Granted Jul 29, 1980·23 cites·13 claims
- 0589US4809336ASemiconductor amplifier with tube amplifier characteristicsPRITCHARD ERIC K·Filed 1987·Granted Feb 28, 1989·35 cites·29 claims
- 0689US4449196AData processing system for multi-precision arithmeticPRITCHARD ERIC K·Filed 1980·Granted May 15, 1984·51 cites·8 claims
- 0787US5133014ASemiconductor emulation of tube amplifiersPRITCHARD ERIC K·Filed 1990·Granted Jul 21, 1992·53 cites·37 claims
- 0882US4140956ADigital stepping motor drive circuitPRITCHARD ERIC K·Filed 1978·Granted Feb 20, 1979·20 cites·8 claims
- 0981US4584512AMicrostepping drives with waveform tuning and microprocessor controlPRITCHARD ERIC K·Filed 1983·Granted Apr 22, 1986·28 cites·76 claims
- 1081US4350943AAmplifier for inductive loads with corrective current sensingPRITCHARD ERIC K·Filed 1980·Granted Sep 21, 1982·29 cites·26 claims
- 1173US5361667ATermination for strings of a musical instrumentPRITCHARD ERIC K·Filed 1993·Granted Nov 8, 1994·21 cites·25 claims
- 1269US4100471AStepping motor control circuitPRITCHARD ERIC K·Filed 1976·Granted Jul 11, 1978·15 cites·13 claims
- 1364US4302712AMethod of minimizing resonance in stepping motor and improved driver thereforPRITCHARD ERIC K·Filed 1980·Granted Nov 24, 1981·15 cites·13 claims
- 1448US4339701ASwitching frequency stabilization and load fault detection in switching amplifiersPRITCHARD ERIC K·Filed 1980·Granted Jul 13, 1982·9 cites·36 claims
- 1548US4272713ASwitching transconductance amplifier for inductive loadsPRITCHARD ERIC K·Filed 1979·Granted Jun 9, 1981·7 cites·6 claims
Join the waitlist — get patent alerts
Get an alert when PRITCHARD ERIC K files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →