Inventor · disambiguated record
Hans-Joachim Walther
Also filed as: WALTHER HANS J · WALTHER HANS-JOACHIM
11 granted patents·557 citations·filing 1977–1992
93Inventor score
Top patents by PatentIndex Score
11 records- 0192US5322059ABreathing mask with flow indicator for the respiration airDRAEGERWERK AG·Filed 1992·Granted Jun 21, 1994·149 cites·8 claims
- 0291US4734940ADevice for affixing a respiratory mask onto a protection helmetDRAEGERWERK AG·Filed 1987·Granted Apr 5, 1988·79 cites·13 claims
- 0389US4136403AHead guard assembly comprising a protective helmet and a protective breathing maskDRAEGERWERK AG·Filed 1977·Granted Jan 30, 1979·71 cites·6 claims
- 0481US4771771AGas mask having a protective hoodDRAEGERWERK AG·Filed 1986·Granted Sep 20, 1988·64 cites·3 claims
- 0581US4555815AProtective helmet with releasably connected protective breathing maskDRAEGERWERK AG·Filed 1984·Granted Dec 3, 1985·51 cites·7 claims
- 0677US4553761ASealFREUDENBERG CARL FA·Filed 1983·Granted Nov 19, 1985·33 cites·9 claims
- 0772US4572176AControl for a protective mask which operates with excess internal pressureDRAEGERWERK AG·Filed 1983·Granted Feb 25, 1986·25 cites·5 claims
- 0854US4473072AReady use respiratorDRAEGERWERK AG·Filed 1982·Granted Sep 25, 1984·16 cites·4 claims
- 0949US4796619ALung-controlled valve for respirator masks having positive pressures inside the maskDRAEGERWERK AG·Filed 1986·Granted Jan 10, 1989·18 cites·3 claims
- 1044US5036842ARespirator with blower support and regeneration of the breathing filterDRAEGERWERK AG·Filed 1989·Granted Aug 6, 1991·37 cites·5 claims
- 1143US4606339AControl valve for a breathing maskDRAEGERWERK AG·Filed 1985·Granted Aug 19, 1986·14 cites·5 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →