Inventor · disambiguated record
Seiji Sakagami
Also filed as: SAKAGAMI SEIJI
17 granted patents·530 citations·filing 1981–2006
95Inventor score
Top patents by PatentIndex Score
17 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
- 0293US6635863B1Optical encoderMITUTOYO CORP·Filed 2000·Granted Oct 21, 2003·66 cites·5 claims
- 0389US4377911AContour measuring instrumentMITUTOYO MFG CO LTD·Filed 1981·Granted Mar 29, 1983·69 cites·12 claims
- 0485US5020969ATurbo vacuum pumpHITACHI LTD·Filed 1989·Granted Jun 4, 1991·55 cites·30 claims
- 0584US7432497B2Absolute linear encoderMITUTOYO CORP·Filed 2006·Granted Oct 7, 2008·13 cites·11 claims
- 0684US4376543ADust excluding deviceMITUTOYO MFG CO LTD·Filed 1981·Granted Mar 15, 1983·33 cites·6 claims
- 0773US7225555B2Linear scale attachment device and attachment methodMITUTOYO CORP·Filed 2005·Granted Jun 5, 2007·7 cites·9 claims
- 0871US4943716ADiffraction-type optical encoder with improved detection signal insensitivity to optical grating gap variationsMITUTOYO CORP·Filed 1989·Granted Jul 24, 1990·17 cites·2 claims
- 0969US6082341ASupercharger for engineHITACHI LTD·Filed 1998·Granted Jul 4, 2000·23 cites·11 claims
- 1062US5536148ATurbo vacuum pumpHITACHI LTD·Filed 1994·Granted Jul 16, 1996·28 cites·13 claims
- 1161US4603480ALinear scale type displacement measuring instrumentMITUTOYO MFG CO LTD·Filed 1985·Granted Aug 5, 1986·15 cites·12 claims
- 1257US4983825ADiffraction type optical encoder with improved detection signal insensitivity to optical grating gap variationsMITUTOYO CORP·Filed 1990·Granted Jan 8, 1991·13 cites·4 claims
- 1351US5501583ATurbo vacuum pumpHITACHI LTD·Filed 1994·Granted Mar 26, 1996·18 cites·8 claims
- 1449US4985623ADiffraction-type optical encoder with improved detection signal insensitivity to optical grating gap variationsMITYTOYO CORP·Filed 1990·Granted Jan 15, 1991·11 cites·3 claims
- 1548US5451147ATurbo vacuum pumpHITACHI LTD·Filed 1991·Granted Sep 19, 1995·16 cites·7 claims
- 1645US4500097ASeal device in displacement measuring instrumentMITUTOYO MFG CO LTD·Filed 1984·Granted Feb 19, 1985·9 cites·18 claims
- 1740US5380171ATurbo vacuum pumpHITACHI LTD·Filed 1993·Granted Jan 10, 1995·9 cites·10 claims
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