Chen; Shih-Ruey Tom
Patent Applications and Registrations
Patent applications and USPTO patent grants for Chen; Shih-Ruey Tom.The latest application filed is for "aqueous ampholyte polymer containing solutions for subterranean applications".
- Chen; Shih-Ruey Tom - Pittsburgh PA
| Patent | Date |
|---|---|
| Salt tolerant friction reducer Grant 10,385,253 - Frederick , et al. A | 2019-08-20 |
| Aqueous Ampholyte Polymer Containing Solutions For Subterranean Applications App 20190048246 - CHUNG; HsinChen ; et al. | 2019-02-14 |
| Ampholyte polymeric compounds in subterranean applications Grant 9,816,022 - Chung , et al. November 14, 2 | 2017-11-14 |
| Ampholyte polymeric compounds in subterranean applications Grant 9,695,350 - Chung , et al. July 4, 2 | 2017-07-04 |
| Salt Tolerant Friction Reducer App 20160017203 - FREDERICK; Kevin Walter ; et al. | 2016-01-21 |
| Aqueous Ampholyte Polymer Containing Solutions For Subterranean Applications App 20150133347 - Chung; HsinChen ; et al. | 2015-05-14 |
| Ampholyte Polymeric Compounds in Subterranean Applications App 20140352960 - Chung; HsinChen ; et al. | 2014-12-04 |
| Ampholyte Polymeric Compounds in Subterranean Applications App 20140352962 - Chung; HsinChen ; et al. | 2014-12-04 |
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