Inventor · disambiguated record
Douglas J. Hennenfent
Also filed as: HENNENFENT DOUGLAS J · HENNENFENT DOUGLAS JOSEPH
15 granted patents·243 citations·filing 1974–1995
93Inventor score
Files withCONTROL DATA CORP6MAGNETIC PERIPHERALS INC6IMPRIS TECHNOLOGY INC1MAGNETIC PERIPHERALS1RECYCLIGHTS INC1
Top patents by PatentIndex Score
15 records- 0193US4536992APrecision lapping systemMAGNETIC PERIPHERALS·Filed 1983·Granted Aug 27, 1985·51 cites·19 claims
- 0288US4517041AMethod for attaching a workpiece to a workpiece carrierMAGNETIC PERIPHERALS INC·Filed 1984·Granted May 14, 1985·32 cites·5 claims
- 0388US4457114AWorkpiece carrierMAGNETIC PERIPHERALS INC·Filed 1982·Granted Jul 3, 1984·43 cites·11 claims
- 0480US3951395AResilient vise jawCONTROL DATA CORP·Filed 1974·Granted Apr 20, 1976·30 cites·12 claims
- 0573US4559743AMethod for calibrating a machining sensorMAGNETIC PERIPHERALS INC·Filed 1984·Granted Dec 24, 1985·22 cites·5 claims
- 0659US4182643AMethod of forming gaps in magnetic headsCONTROL DATA CORP·Filed 1978·Granted Jan 8, 1980·16 cites·13 claims
- 0747US4006525AMethod of machining vise jaw faceCONTROL DATA CORP·Filed 1976·Granted Feb 8, 1977·8 cites·4 claims
- 0844US4279102AMethod of manufacturing narrow track ferrite head coresMAGNETIC PERIPHERALS INC·Filed 1978·Granted Jul 21, 1981·7 cites·3 claims
- 0943US3982318AMagnetic transducer head core manufacturing methodCONTROL DATA CORP·Filed 1976·Granted Sep 28, 1976·7 cites·8 claims
- 1041US5580006ASprocket crusherRECYCLIGHTS INC·Filed 1995·Granted Dec 3, 1996·12 cites·6 claims
- 1138US4236355APrecision grinding wheel mountCONTROL DATA CORP·Filed 1978·Granted Dec 2, 1980·5 cites·2 claims
- 1234US3986209AMagnetic read head with offset flux gapsCONTROL DATA CORP·Filed 1975·Granted Oct 12, 1976·3 cites·6 claims
- 1329US4874922AGranule vise for manufacturing a magnetic head core with a glass fillet adjacent the inner edge of the gapIMPRIS TECHNOLOGY INC·Filed 1988·Granted Oct 17, 1989·3 cites·1 claims
- 1429US4297781AMethod of aligning a precision grinding wheel assemblyMAGNETIC PERIPHERALS INC·Filed 1980·Granted Nov 3, 1981·1 cites·2 claims
- 1524US4942658AMethod for manufacturing a magnetic head core with a flux gap having a precisely controlled lengthMAGNETIC PERIPHERALS INC·Filed 1988·Granted Jul 24, 1990·3 cites·7 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →