Inventor · disambiguated record
Masahiro Mase
Also filed as: MASE MASAHIRO
13 granted patents·511 citations·filing 1984–1997
94Inventor score
Files withHITACHI LTD13
Top patents by PatentIndex Score
13 records- 0194US5961291ATurbo vacuum pump with a magnetically levitated rotor and a control unit for displacing the rotator at various angles to scrape deposits from the inside of the pumpHITACHI LTD·Filed 1997·Granted Oct 5, 1999·128 cites·20 claims
- 0285US5062771AVacuum system with a secondary gas also connected to the roughing pump for a semiconductor processing chamberHITACHI LTD·Filed 1989·Granted Nov 5, 1991·48 cites·52 claims
- 0385US5020969ATurbo vacuum pumpHITACHI LTD·Filed 1989·Granted Jun 4, 1991·55 cites·30 claims
- 0481US4734018AVacuum pump with plural labyrinth seal portionsHITACHI LTD·Filed 1986·Granted Mar 29, 1988·38 cites·5 claims
- 0578US4835114AMethod for LPCVD of semiconductors using oil free vacuum pumpsHITACHI LTD·Filed 1987·Granted May 30, 1989·36 cites·16 claims
- 0677US4668160AVacuum pumpHITACHI LTD·Filed 1986·Granted May 26, 1987·38 cites·3 claims
- 0774US4904155AVacuum pumpHITACHI LTD·Filed 1988·Granted Feb 27, 1990·32 cites·15 claims
- 0873US4593835ACryogenic liquefied pump systemHITACHI LTD·Filed 1984·Granted Jun 10, 1986·33 cites·10 claims
- 0967US5190438AVacuum pumpHITACHI LTD·Filed 1991·Granted Mar 2, 1993·26 cites·8 claims
- 1062US5536148ATurbo vacuum pumpHITACHI LTD·Filed 1994·Granted Jul 16, 1996·28 cites·13 claims
- 1152US5664935AVacuum pumpHITACHI LTD·Filed 1995·Granted Sep 9, 1997·20 cites·8 claims
- 1248US5451147ATurbo vacuum pumpHITACHI LTD·Filed 1991·Granted Sep 19, 1995·16 cites·7 claims
- 1345US4735550ATurbo molecular pumpHITACHI LTD·Filed 1986·Granted Apr 5, 1988·13 cites·3 claims
Join the waitlist — get patent alerts
Get an alert when Masahiro Mase files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →