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Patent applications and USPTO patent grants for Walter; Joe.The latest application filed is for "harvesting vibration for downhole power generation".
Patent | Date |
---|---|
Harvesting Vibration For Downhole Power Generation App 20090166045 - Wetzel; Rodney J. ;   et al. | 2009-07-02 |
Long duration fuel cell system Grant 7,096,955 - Zhang , et al. August 29, 2 | 2006-08-29 |
Method and apparatus for downhole pipe or casing repair App 20060163075 - Zhang; Wenlin ;   et al. | 2006-07-27 |
Harvesting Vibration for Downhole Power Generation App 20060086498 - Wetzel; Rodney J. ;   et al. | 2006-04-27 |
Long duration fuel cell system App 20030116321 - Zhang, Wenlin ;   et al. | 2003-06-26 |
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