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Patent applications and USPTO patent grants for HIRAKAWA; Yutaka.The latest application filed is for "refrigeration cycle apparatus".
Patent | Date |
---|---|
Refrigeration Cycle Apparatus App 20190113256 - MIZUNO; Kota ;   et al. | 2019-04-18 |
Heat pump compressor including liquid crystal polymer insulating material Grant 9,915,465 - Matsunaga , et al. March 13, 2 | 2018-03-13 |
Heat Pump Apparatus App 20170146284 - MATSUNAGA; Noriaki ;   et al. | 2017-05-25 |
Password authentication apparatus and password authentication method Grant 8,307,424 - Hirakawa November 6, 2 | 2012-11-06 |
Password Authentication Apparatus And Password Authentication Method App 20100017875 - Hirakawa; Yutaka | 2010-01-21 |
Vacuum pump apparatus having peltier elements for cooling the motor & bearing housing and heating the outer housing Grant 5,618,167 - Hirakawa , et al. April 8, 1 | 1997-04-08 |
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