Inventor · disambiguated record
Akira Tsumiyama
Also filed as: TSUMIYAMA AKIRA
19 granted patents·1 pending application·374 citations·filing 2001–2011
95Inventor score
Top patents by PatentIndex Score
20 records- 0197US8201476B2Bicycle operating deviceTSUMIYAMA AKIRA·Filed 2008·Granted Jun 19, 2012·88 cites·10 claims
- 0297US6647823B2Bicycle control deviceSHIMANO KK·Filed 2001·Granted Nov 18, 2003·83 cites·34 claims
- 0389US8695454B2Bicycle operating deviceTSUMIYAMA AKIRA·Filed 2011·Granted Apr 15, 2014·8 cites·16 claims
- 0489US7650813B2Position control mechanism for bicycle control deviceSHIMANO KK·Filed 2005·Granted Jan 26, 2010·22 cites·17 claims
- 0588US7219574B2Hydraulic gear shift mechanismSHIMANO KK·Filed 2005·Granted May 22, 2007·14 cites·9 claims
- 0688US6691591B2Bicycle control deviceSHIMANO KK·Filed 2003·Granted Feb 17, 2004·30 cites·3 claims
- 0785US7526979B2Bicycle shift position control mechanismSHIMANO KK·Filed 2005·Granted May 5, 2009·23 cites·17 claims
- 0882US7509888B2Hydraulic gear shift mechanismSHIMANO KK·Filed 2006·Granted Mar 31, 2009·8 cites·13 claims
- 0982US7137314B2Hydraulic gear shift mechanismSHIMANO KK·Filed 2005·Granted Nov 21, 2006·9 cites·16 claims
- 1080US7124873B2Shift and brake control deviceSHIMANO KK·Filed 2004·Granted Oct 24, 2006·22 cites·18 claims
- 1177US7032475B2Hydraulic gear shift mechanismSHIMANO KK·Filed 2001·Granted Apr 25, 2006·14 cites·7 claims
- 1276US7802489B2Bicycle control deviceSHIMANO KK·Filed 2005·Granted Sep 28, 2010·7 cites·22 claims
- 1376US7392723B2Bicycle shift control mechanismSHIMANO KK·Filed 2005·Granted Jul 1, 2008·11 cites·18 claims
- 1466US7062989B2Bicycle control deviceSHIMANO KK·Filed 2003·Granted Jun 20, 2006·11 cites·12 claims
- 1563US8549956B2Bicycle control deviceMIKI YOSHIMITSU·Filed 2007·Granted Oct 8, 2013·2 cites·15 claims
- 1662US8181553B2Position control mechanism for bicycle control deviceTSUMIYAMA AKIRA·Filed 2004·Granted May 22, 2012·11 cites·15 claims
- 1757US7267026B2Bicycle control deviceSHIMANO KK·Filed 2003·Granted Sep 11, 2007·5 cites·23 claims
- 1854US7228756B2Bicycle control deviceSHIMANO KK·Filed 2003·Granted Jun 12, 2007·5 cites·18 claims
- 1952US8413543B2Bicycle operating unit connectorTSUMIYAMA AKIRA·Filed 2010·Granted Apr 9, 2013·1 cites·16 claims
- 2041US2002139218A1Bicycle control deviceFiled 2001·Application pending·0 cites
Join the waitlist — get patent alerts
Get an alert when Akira Tsumiyama 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 →