Inventor · disambiguated record
Akira Hirakawa
Also filed as: HIRAKAWA AKIRA
13 granted patents·3 pending applications·123 citations·filing 1991–2020
91Inventor score
Top patents by PatentIndex Score
16 records- 0173USD573110SHeat sinkNIDEC CORP·Filed 2007·Granted Jul 15, 2008·19 cites·1 claims
- 0263US5757409AExposure method and pattern data preparation system therefor, pattern data preparation method and mask as well as exposure apparatusHITACHI LTD·Filed 1996·Granted May 26, 1998·25 cites·43 claims
- 0362US6534215B1Sintered cadmium negative electrode for alkaline storage battery and method for producing thereofSANYO ELECTRIC CO·Filed 2000·Granted Mar 18, 2003·5 cites·16 claims
- 0462US5371373AElectron beam lithography method and apparatus separating repetitive and non-repetitive pattern dataHITACHI LTD·Filed 1993·Granted Dec 6, 1994·16 cites·9 claims
- 0553US5557314AExposure method and pattern data preparation system therefor, pattern data preparation method and mask as well as exposure apparatusHITACHI LTD·Filed 1993·Granted Sep 17, 1996·20 cites·17 claims
- 0648USD615503SHeat sinkNIDEC CORP·Filed 2009·Granted May 11, 2010·5 cites·1 claims
- 0747USD593042SHeat sinkNIDEC CORP·Filed 2008·Granted May 26, 2009·6 cites·1 claims
- 0844USD600218SHeat sinkNIDEC CORP·Filed 2007·Granted Sep 15, 2009·4 cites·1 claims
- 0943US2008223558A1Cooling deviceNIDEC CORP·Filed 2008·Application pending·0 cites
- 1043US2009073656A1Heat sink, heat sink fan, and method for manufacturing the sameNIDEC CORP·Filed 2007·Application pending·0 cites
- 1143US2008223551A1Manufacturing method of fin unitNIDEC CORP·Filed 2008·Application pending·0 cites
- 1242US6908703B2Sealed battery having an electrode substrate exposed portion extending from the electrode assemblySANYO ELECTRIC CO·Filed 2002·Granted Jun 21, 2005·0 cites·7 claims
- 1342US5281495AAlkaline storage cell having a negative electrode comprising a cadmium active materialSANYO ELECTRIC CO·Filed 1993·Granted Jan 25, 1994·15 cites·23 claims
- 1437US11820488B2Image capturing methodREDDOTDRONEJAPAN CO LTD·Filed 2020·Granted Nov 21, 2023·0 cites·20 claims
- 1532US5208122AEnclosed alkaline storage cellSANYO ELECTRIC CO·Filed 1992·Granted May 4, 1993·6 cites·5 claims
- 1631US5206517AElectron beam lithographic methodHITACHI LTD·Filed 1991·Granted Apr 27, 1993·2 cites·6 claims
Join the waitlist — get patent alerts
Get an alert when Akira Hirakawa 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 →