Inventor · disambiguated record
Ivan Hellquist
Also filed as: HELLQUIST IVAN · HELLQUIST IVAN A · HELLQUIST IVAN ALDINE
7 granted patents·166 citations·filing 1976–1996
87Inventor score
Top patents by PatentIndex Score
7 records- 0178US4887638ARegulatorINTERSPIRO AB·Filed 1988·Granted Dec 19, 1989·49 cites·29 claims
- 0264US5080414ALocking device for attaching a gas cylinder in a portable cylinder holderINTERSPIRO AB·Filed 1990·Granted Jan 14, 1992·37 cites·1 claims
- 0360US4926855ARespiratorINTERSPIRO AB·Filed 1987·Granted May 22, 1990·35 cites·19 claims
- 0458US4031887ABreathing apparatus providing pressure compensationAGA AB·Filed 1976·Granted Jun 28, 1977·16 cites·8 claims
- 0556US4141353AWarning arrangement for breathing apparatus for diversAGA AB·Filed 1977·Granted Feb 27, 1979·15 cites·7 claims
- 0639US4060076ABreathing apparatus incorporating depth compensationAGA AB·Filed 1976·Granted Nov 29, 1977·7 cites·4 claims
- 0734US5813400ABreathing apparatusCOMASEC INTERNATIONAL SA·Filed 1996·Granted Sep 29, 1998·7 cites·11 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →