Inventor · disambiguated record
Petrus J. M. Ophey
Also filed as: OPHEY PETRUS J M
4 granted patents·40 citations·filing 1976–1980
75Inventor score
Technology areasG03G
Top patents by PatentIndex Score
4 records- 0171US4110033AControl system for copying apparatusOCE VAN DER GRINTEN NV·Filed 1977·Granted Aug 29, 1978·16 cites·6 claims
- 0268US4106868AElectrographic copying apparatus with surface-to-surface image transfersOCE VAN DER GRINTEN NV·Filed 1976·Granted Aug 15, 1978·14 cites·6 claims
- 0352US4252432AControl system for electrophotographic apparatusOCE VAN DER GRINTEN NV·Filed 1979·Granted Feb 24, 1981·8 cites·3 claims
- 0428US4375330AControl circuit in an electrophotographic copying machineOCE NEDERLAND BV·Filed 1980·Granted Mar 1, 1983·2 cites·6 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →