Chang; Zen-Yu
Patent Applications and Registrations
Patent applications and USPTO patent grants for Chang; Zen-Yu.The latest application filed is for "gas hydrate inhibitors".
- Chang; Zen-Yu - Conroe TX
- Chang; Zen-Yu - Houston TX US
- Chang; Zen-Yu - North Wales PA
- Chang; Zen-Yu - Fairfield CT
- Chang, Zen-Yu - Hockessin DE
| Patent | Date |
|---|---|
| Gas hydrate inhibitors Grant 10,745,634 - Chang , et al. A | 2020-08-18 |
| Lubricant for water based drilling fluid Grant 10,597,576 - Mettath , et al. | 2020-03-24 |
| Gas Hydrate Inhibitors App 20190136146 - Chang; Zen-Yu ; et al. | 2019-05-09 |
| Lubricant For Water Based Drilling Fluid App 20190078009 - Mettath; Sashikumar ; et al. | 2019-03-14 |
| Additive Compositions For Drilling Fluids And Methods For Their Use App 20180072937 - Mettath; Sashikumar ; et al. | 2018-03-15 |
| Ion tolerant corrosion inhibitors and inhibitor combinations for fuels Grant 9,873,847 - Bartley , et al. January 23, 2 | 2018-01-23 |
| Gas Hydrate Inhibitors App 20160230077 - Mastrangelo; Antonio ; et al. | 2016-08-11 |
| Viscoelastic Fluid App 20160215204 - Chang; Zen-Yu ; et al. | 2016-07-28 |
| Ion Tolerant Corrosion Inhibitors And Inhibitor Combinations For Fuels App 20160032208 - Bartley; Stuart L. ; et al. | 2016-02-04 |
| Hydroprocessing Of Biorenewable Feedstocks App 20140163270 - Chang; Zen-Yu ; et al. | 2014-06-12 |
| Processes for inhibiting fouling in hydrocarbon processing Grant 8,518,238 - Link , et al. August 27, 2 | 2013-08-27 |
| Methods of Removing Deposits of Oil and Gas Applications App 20130137608 - Chang; Zen-Yu ; et al. | 2013-05-30 |
| Processes For Inhibiting Foulding In Hydrocarbon Processing App 20100258480 - LINK; John ; et al. | 2010-10-14 |
| Polythiaether compounds and their use as corrosion inhibitors Grant 7,335,794 - Chang , et al. February 26, 2 | 2008-02-26 |
| Aviation fuel cold flow additives and compositions App 20070044374 - Deng; Fang ; et al. | 2007-03-01 |
| Aviation fuel cold flow additives and compositions App 20070044375 - Deng; Fang ; et al. | 2007-03-01 |
| Polythiaether compounds and their use as corrosion inhibitors App 20060022172 - Chang; Zen-Yu ; et al. | 2006-02-02 |
| Polythiaether compounds and their use as corrosion inhibitors Grant 6,974,553 - Chang , et al. December 13, 2 | 2005-12-13 |
| Lubricity additives for low sulfur hydrocarbon fuels App 20050126073 - Cross, Collin W. ; et al. | 2005-06-16 |
| Lubricity additives for low sulfur hydrocarbon fuels Grant 6,872,230 - Cross , et al. March 29, 2 | 2005-03-29 |
| Aviation fuel cold flow additives and compositions App 20040250468 - Deng, Fang ; et al. | 2004-12-16 |
| Polythiaether compounds and their use as corrosion inhibitors App 20040076542 - Chang, Zen-Yu ; et al. | 2004-04-22 |
| Lubricity additives for low sulfur hydrocarbon fuels App 20040010963 - Cross, Collin W. ; et al. | 2004-01-22 |
| Fungicidal pyrimidinones Grant 6,066,638 - Bereznak , et al. May 23, 2 | 2000-05-23 |
| Fungicidal fused bicyclic pyrimidinones Grant 5,945,423 - Bereznak , et al. August 31, 1 | 1999-08-31 |
| Fungicidal fused bicyclic pyrimidinones Grant 5,747,497 - Bereznak , et al. May 5, 1 | 1998-05-05 |
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