Inventor · disambiguated record
Richard L. Stein
Also filed as: STEIN RICHARD L
4 granted patents·170 citations·filing 1979–2005
80Inventor score
Technology areasA62B
Top patents by PatentIndex Score
4 records- 0188US7114496B1Filter cartridge with integrated inhalation and exhalation valvesTMR D LLC·Filed 2005·Granted Oct 3, 2006·30 cites·16 claims
- 0282US5701893ADisposable face maskSURVIVAIR INC·Filed 1996·Granted Dec 30, 1997·110 cites·21 claims
- 0362US6736137B1Protective hooded respirator with oral-nasal cup breathing interfaceTMR A LLC·Filed 2003·Granted May 18, 2004·14 cites·15 claims
- 0455US4299216ASelf-contained closed circuit breathing apparatus having a balanced breathing resistance systemUS INTERIOR·Filed 1979·Granted Nov 10, 1981·16 cites·6 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →