Inventor · disambiguated record
Takehiro Akizawa
Also filed as: AKIZAWA TAKEHIRO
5 granted patents·378 citations·filing 1997–2005
87Inventor score
Technology areasF04C
Files withHITACHI LTD5
Top patents by PatentIndex Score
5 records- 0198US7354259B2Scroll compressor having a valved back pressure chamber and a bypass for overcompressionHITACHI LTD·Filed 2005·Granted Apr 8, 2008·67 cites·3 claims
- 0298US7118358B2Scroll compressor having a back-pressure chamber control valveHITACHI LTD·Filed 2005·Granted Oct 10, 2006·76 cites·1 claims
- 0398US6589035B1Scroll compressor having a valved back-pressure chamber and a bypass for over-compressionHITACHI LTD·Filed 1997·Granted Jul 8, 2003·95 cites·14 claims
- 0497US7137796B2Scroll compressorHITACHI LTD·Filed 2004·Granted Nov 21, 2006·71 cites·4 claims
- 0597US6769888B2Scroll compressor having a valved back pressure chamber and a bypass for overcompressionHITACHI LTD·Filed 2003·Granted Aug 3, 2004·69 cites·3 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →