Inventor · disambiguated record
Donald K. Rex
Also filed as: REX DONALD K
13 granted patents·131 citations·filing 1975–1993
91Inventor score
Technology areasB41J
Files withIBM13
Top patents by PatentIndex Score
13 records- 0173US5518324APlaten to print head gap adjustment arrangementIBM·Filed 1993·Granted May 21, 1996·34 cites·11 claims
- 0269US4671686APrinter having removable paper feed moduleIBM·Filed 1985·Granted Jun 9, 1987·22 cites·14 claims
- 0369US4453660AForms feed tractorIBM·Filed 1980·Granted Jun 12, 1984·16 cites·14 claims
- 0462US3987883ARibbon lifting mechanism for a wire matrix printerIBM·Filed 1975·Granted Oct 26, 1976·13 cites·6 claims
- 0555US4285604ARibbon shield for printerIBM·Filed 1979·Granted Aug 25, 1981·8 cites·3 claims
- 0651US5005996ARibbon cartridge with endless ribbon reinking mechanismIBM·Filed 1989·Granted Apr 9, 1991·8 cites·15 claims
- 0748US4790467AWeb feed mechanism and door with static protrusionsIBM·Filed 1986·Granted Dec 13, 1988·8 cites·12 claims
- 0845US4643601ARibbon positioning mechanismIBM·Filed 1984·Granted Feb 17, 1987·7 cites·22 claims
- 0939US4284363AData matrix print headIBM·Filed 1979·Granted Aug 18, 1981·4 cites·20 claims
- 1036US4585606AMethod of making an endless forms feed tractor beltIBM·Filed 1984·Granted Apr 29, 1986·3 cites·3 claims
- 1134US5015108ARibbon print track reinking with a roll systemIBM·Filed 1990·Granted May 14, 1991·3 cites·14 claims
- 1234US4376587APrint ribbon protectionIBM·Filed 1981·Granted Mar 15, 1983·2 cites·4 claims
- 1331US4362406ADot matrix print headIBM·Filed 1981·Granted Dec 7, 1982·3 cites·3 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →