Inventor · disambiguated record
Ralph S. Hafle
Also filed as: HAFLE RALPH S
5 granted patents·201 citations·filing 1972–1989
83Inventor score
Top patents by PatentIndex Score
5 records- 0193US5017772AFiber optic probe sensor for measuring target displacementBEI ELECTRONICS·Filed 1989·Granted May 21, 1991·92 cites·25 claims
- 0284US4628298AChain code encoderBEI MOTION SYSTEMS COMPANY INC·Filed 1984·Granted Dec 9, 1986·55 cites·15 claims
- 0371US4362358AOptical encoder having only one or two fiber optic cablesBEI ELECTRONICS·Filed 1980·Granted Dec 7, 1982·23 cites·8 claims
- 0467US3974428AWide range, high accuracy, electronically programmed speed control systemBALDWIN ELECTRONICS INC·Filed 1974·Granted Aug 10, 1976·26 cites·22 claims
- 0540US3976997ADigital plus analog output encoderNASA·Filed 1972·Granted Aug 24, 1976·5 cites·27 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →