Inventor · disambiguated record
Donald F. Pfeuffer
Also filed as: PFEUFFER DONALD F
4 granted patents·23 citations·filing 1980–1983
72Inventor score
Top patents by PatentIndex Score
4 records- 0157US4577955AElectrophotographic copying apparatus including a guillotine cleaner blade arrangement and method of operationRICOH KK·Filed 1983·Granted Mar 25, 1986·10 cites·14 claims
- 0234US4572655AElectrophotographic copying apparatus and method of use including electrostatic toner recycling procedureRICOH SYSTEMS INC·Filed 1983·Granted Feb 25, 1986·3 cites·16 claims
- 0334US4361109ADeveloper crossmixing apparatusRICOH KK·Filed 1980·Granted Nov 30, 1982·7 cites·8 claims
- 0429US4427756ADeveloper crossmixing methodRICOH KK·Filed 1982·Granted Jan 24, 1984·3 cites·4 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →