Inventor · disambiguated record
Richard D. Maryyanek
Also filed as: MARYYANEK RICHARD D
6 granted patents·461 citations·filing 1982–1993
88Inventor score
Technology areasA62B
Top patents by PatentIndex Score
6 records- 0194US4600002ADisposable respiratorAMERICAN OPTICAL CORP·Filed 1984·Granted Jul 15, 1986·171 cites·7 claims
- 0290USD286213SDual filter respiratorMARYYANEK RICHARD D·Filed 1983·Granted Oct 14, 1986·39 cites·1 claims
- 0388US5299448APositive pressure test apparatus for facepiece respiratorCABOT SAFETY CORP·Filed 1993·Granted Apr 5, 1994·112 cites·14 claims
- 0482US4921512AFilter elementAMERICAN OPTICAL CORP·Filed 1989·Granted May 1, 1990·73 cites·13 claims
- 0578US4592350ARespiratorAMERICAN OPTICAL CORP·Filed 1985·Granted Jun 3, 1986·60 cites·6 claims
- 0657USD270957SRespiratorAMERICAN OPTICAL CORP·Filed 1982·Granted Oct 11, 1983·6 cites·1 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →