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Patent applications and USPTO patent grants for Hiraishi; Iwao.The latest application filed is for "method for producing piston ring with recess".
Patent | Date |
---|---|
Method for producing piston ring with recess Grant 11,047,479 - Fujimura , et al. June 29, 2 | 2021-06-29 |
Method For Producing Piston Ring With Recess App 20200080638 - FUJIMURA; Kazuhiro ;   et al. | 2020-03-12 |
Method for producing piston ring with recess Grant 10,514,097 - Fujimura , et al. Dec | 2019-12-24 |
Multi-piece oil ring Grant 10,330,198 - Chiba , et al. | 2019-06-25 |
Multi-piece Oil Ring App 20180363778 - Chiba; Atsushi ;   et al. | 2018-12-20 |
Multi-piece oil ring Grant 10,030,772 - Chiba , et al. July 24, 2 | 2018-07-24 |
Method For Producing Piston Ring With Recess App 20170335965 - FUJIMURA; Kazuhiro ;   et al. | 2017-11-23 |
Piston ring Grant 9,464,717 - Ito , et al. October 11, 2 | 2016-10-11 |
Internal combustion engine oil ring Grant 8,820,750 - Chiba , et al. September 2, 2 | 2014-09-02 |
Internal Combustion Engine Oil Ring App 20130181410 - Chiba; Atsushi ;   et al. | 2013-07-18 |
Piston Ring App 20130043659 - Ito; Michihiro ;   et al. | 2013-02-21 |
Multi-piece Oil Ring App 20120261886 - Chiba; Atsushi ;   et al. | 2012-10-18 |
Piston Ring App 20120205876 - Fujimura; Kazuhiro ;   et al. | 2012-08-16 |
Combination of a cylinder liner and a piston ring Grant 7,493,882 - Hiraishi , et al. February 24, 2 | 2009-02-24 |
Combination Of A Cylinder Liner And A Piston Ring App 20080053396 - HIRAISHI; Iwao ;   et al. | 2008-03-06 |
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