Onuma; Akira
Patent Applications and Registrations
Patent applications and USPTO patent grants for Onuma; Akira.The latest application filed is for "method of high frequency pulse arc welding and apparatus therefor".
- Onuma; Akira - Hitachi JP
| Patent | Date |
|---|---|
| Method of high frequency pulse arc welding and apparatus therefor Grant 6,225,598 - Nihei , et al. May 1, 2 | 2001-05-01 |
| Underwater laser processing device including chamber with partitioning wall Grant 5,977,515 - Uraki , et al. November 2, 1 | 1999-11-02 |
| Submerged laser beam irradiation equipment Grant 5,938,954 - Onuma , et al. August 17, 1 | 1999-08-17 |
| Thin film magnetic head and production method thereof and magnetic disk drive equipped with this thin film magnetic head Grant 5,687,045 - Okai , et al. November 11, 1 | 1997-11-11 |
| Thin film magnetic head and method of manufacturing the same Grant 5,316,617 - Kawabe , et al. May 31, 1 | 1994-05-31 |
| Method of electrode current control in welding apparatus having a plurality of electrodes Grant 4,396,823 - Nihei , et al. August 2, 1 | 1983-08-02 |
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