Inventor · disambiguated record
Donald E. Washkewicz
Also filed as: WASHKEWICZ DONALD E
7 granted patents·453 citations·filing 1975–1994
90Inventor score
Files withPARKER HANNIFIN CORP7
Top patents by PatentIndex Score
7 records- 0194US4384595AHose constructionPARKER HANNIFIN CORP·Filed 1981·Granted May 24, 1983·111 cites·14 claims
- 0291US4952262AHose constructionPARKER HANNIFIN CORP·Filed 1988·Granted Aug 28, 1990·78 cites·24 claims
- 0388US5584513APush in plastic tube fittingPARKER HANNIFIN CORP·Filed 1994·Granted Dec 17, 1996·85 cites·19 claims
- 0487US4238260AMethod of making an elastomeric hosePARKER HANNIFIN CORP·Filed 1978·Granted Dec 9, 1980·43 cites·8 claims
- 0587US4142554AHose constructionPARKER HANNIFIN CORP·Filed 1977·Granted Mar 6, 1979·47 cites·5 claims
- 0684US4699178ALow volumetric expansion hosePARKER HANNIFIN CORP·Filed 1986·Granted Oct 13, 1987·58 cites·3 claims
- 0762US3966238AHose construction and hose coupling jointPARKER HANNIFIN CORP·Filed 1975·Granted Jun 29, 1976·31 cites·4 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →