Inventor · disambiguated record
Hisashi Hayakawa
Also filed as: HAYAKAWA HISASHI
17 granted patents·5 pending applications·411 citations·filing 1989–2013
95Inventor score
Top patents by PatentIndex Score
22 records- 0194US5482262AHydraulic autotensionerNTN TOYO BEARING CO LTD·Filed 1994·Granted Jan 9, 1996·53 cites·5 claims
- 0294US4940447AAutotensioner for adjusting the tension of a timing beltNTN TOYO BEARING CO LTD·Filed 1989·Granted Jul 10, 1990·80 cites·3 claims
- 0392US6935978B2Chain tensionerNTN TOYO BEARING CO LTD·Filed 2003·Granted Aug 30, 2005·38 cites·4 claims
- 0488US7775921B2Chain tensionerNTN TOYO BEARING CO LTD·Filed 2002·Granted Aug 17, 2010·31 cites·18 claims
- 0587US7559863B2Chain tensionerNTN TOYO BEARING CO LTD·Filed 2007·Granted Jul 14, 2009·16 cites·1 claims
- 0687US6530256B1Method and device for expanding tube materialSANGO CO LTD·Filed 2000·Granted Mar 11, 2003·22 cites·33 claims
- 0787US4904230ABelt autotensionerNTN TOYO BEARING CO LTD·Filed 1989·Granted Feb 27, 1990·39 cites·2 claims
- 0883US7677999B2Chain tensionerNTN TOYO BEARING CO LTD·Filed 2005·Granted Mar 16, 2010·12 cites·9 claims
- 0982US7775923B2Chain tensioner for two-wheeled vehicle engineNTN TOYO BEARING CO LTD·Filed 2005·Granted Aug 17, 2010·11 cites·3 claims
- 1082US4950209AAutotensionerNTN TOYO BEARING CO LTD·Filed 1989·Granted Aug 21, 1990·31 cites·2 claims
- 1176US7527572B2Chain tensionerNTN TOYO BEARING CO LTD·Filed 2004·Granted May 5, 2009·17 cites·6 claims
- 1269US7037229B2Hydraulic tensionerNTN TOYO BEARING CO LTD·Filed 2003·Granted May 2, 2006·12 cites·18 claims
- 1368US4986796AHydraulic autotensionerNTN TOYO BEARING CO LTD·Filed 1990·Granted Jan 22, 1991·20 cites·1 claims
- 1462US9046176B2Hydraulic auto-tensionerSATO SEIJI·Filed 2013·Granted Jun 2, 2015·2 cites·13 claims
- 1558US5632474ACompact hydraulic autotensioner with return spring mounted around a sleeveNTN TOYO BEARING CO LTD·Filed 1995·Granted May 27, 1997·13 cites·3 claims
- 1654US5607368AAutotensionerNTN TOYO BEARING CO LTD·Filed 1995·Granted Mar 4, 1997·14 cites·3 claims
- 1747US8393987B2Chain tensionerSATO SEIJI·Filed 2009·Granted Mar 12, 2013·0 cites·13 claims
- 1845US2010087285A1Chain tensionerSATO SEIJI·Filed 2009·Application pending·0 cites
- 1942US2013260931A1Hydraulic auto-tensionerNTN TOYO BEARING CO LTD·Filed 2013·Application pending·0 cites
- 2040US2006116229A1Chain tensionerSATO SEIJI·Filed 2005·Application pending·0 cites
- 2139US2008096707A1Chain tensionerNTN TOYO BEARING CO LTD·Filed 2004·Application pending·0 cites
- 2238US2008280711A1Chain TensionerSATO SEIJI·Filed 2004·Application pending·0 cites
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