Leyshon; David W.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Leyshon; David W..The latest application filed is for "method of improving olefin isomerization".
Company Profile
3.28.26
- Leyshon; David W. - Houston TX
- Leyshon; David W. - West Chester PA
- Leyshon; David W. - Westport CT
Patent Activity
| Patent | Date |
|---|---|
| Method of improving olefin isomerization Grant 11,440,858 - Watson , et al. September 13, 2 | 2022-09-13 |
| Olefin Isomerization With Small Crystallite Zeolite Catalyst App 20220135499 - Watson; Rick B. ; et al. | 2022-05-05 |
| Method Of Improving Olefin Isomerization App 20220135500 - Watson; Rick B. ; et al. | 2022-05-05 |
| Isobutylene to propylene process flow improvement Grant 11,261,142 - Leyshon , et al. March 1, 2 | 2022-03-01 |
| Isobutylene To Propylene Process Flow Improvement App 20210403396 - Leyshon; David W. ; et al. | 2021-12-30 |
| Titanated Catalysts, Methods Of Preparing Titanated Catalysts, And Methods Of Epoxidation App 20210129113 - Nagy; Sandor ; et al. | 2021-05-06 |
| Titanated Catalysts, Methods Of Preparing Titanated Catalysts, And Methods Of Epoxidation App 20210129112 - Nagy; Sandor ; et al. | 2021-05-06 |
| Alkylene oxide separation system Grant 10,513,502 - Ross-Medgaarden , et al. Dec | 2019-12-24 |
| Methods of producing propylene and ethylene Grant 10,513,472 - Leyshon Dec | 2019-12-24 |
| Alkylene Oxide Separation System App 20190241534 - Ross-Medgaarden; Elizabeth I. ; et al. | 2019-08-08 |
| Methods Of Producing Propylene And Ethylene App 20190127291 - Leyshon; David W. | 2019-05-02 |
| Alkylene oxide separation systems, methods, and apparatuses Grant 10,233,166 - Li , et al. | 2019-03-19 |
| Catalyst performance in propylene epoxidation Grant 9,932,318 - Dang , et al. April 3, 2 | 2018-04-03 |
| Oxidative methods of phosphorus removal from liquid hydrocarbons Grant 9,873,648 - Leyshon , et al. January 23, 2 | 2018-01-23 |
| Alkylene Oxide Separation Systems, Methods, And Apparatuses App 20170137394 - Li; Xiangmin ; et al. | 2017-05-18 |
| Process for forming propylene oxide from oxidation of methyl benzyl alcohol Grant 9,643,943 - Dang , et al. May 9, 2 | 2017-05-09 |
| Alkylene oxide separation systems, methods, and apparatuses Grant 9,593,090 - Li , et al. March 14, 2 | 2017-03-14 |
| Production of propylene glycol monoalkyl ether Grant 9,586,881 - Li , et al. March 7, 2 | 2017-03-07 |
| Process For Forming Propylene Oxide From Oxidation Of Methyl Benzyl Alcohol App 20160297783 - Dang; Vu A. ; et al. | 2016-10-13 |
| Catalyst Performance In Propylene Epoxidation App 20160297782 - Dang; Vu A. ; et al. | 2016-10-13 |
| Oxidative Methods Of Phosphorus Removal From Liquid Hydrocarbons App 20160115102 - Leyshon; David W. ; et al. | 2016-04-28 |
| Production Of Propylene Glycol Monoalkyl Ether App 20160031779 - LI; XIANGMIN ; et al. | 2016-02-04 |
| Alkylene oxide separation systems, methods, and apparatuses Grant 8,981,133 - Li , et al. March 17, 2 | 2015-03-17 |
| Alkylene Oxide Separation Systems, Methods, And Apparatuses App 20150031905 - Li; Xiangmin ; et al. | 2015-01-29 |
| Alkylene Oxide Separation Systems, Methods, And Apparatuses App 20120312680 - LI; Xiangmin ; et al. | 2012-12-13 |
| Propylene production Grant 8,178,737 - Leyshon May 15, 2 | 2012-05-15 |
| Diisobutylene process Grant 8,067,655 - Nichols , et al. November 29, 2 | 2011-11-29 |
| Propylene and isoprene production Grant 7,816,572 - Leyshon , et al. October 19, 2 | 2010-10-19 |
| Purification of ultralow sulfur diesel fuel App 20100155302 - Kaminsky; Mark P. ; et al. | 2010-06-24 |
| Diisobutylene process App 20100145122 - Zak; Thomas S. ; et al. | 2010-06-10 |
| Diisobutylene process App 20090299117 - Nichols; Natalie C.M.B. ; et al. | 2009-12-03 |
| Upgrading drip oil Grant 7,527,725 - Viswanathan , et al. May 5, 2 | 2009-05-05 |
| Propylene and isoprene production App 20090043144 - Leyshon; David W. ; et al. | 2009-02-12 |
| Propylene production App 20080312481 - Leyshon; David W. | 2008-12-18 |
| Propylene production App 20080146856 - Leyshon; David W. | 2008-06-19 |
| Upgrading drip oil App 20070249886 - Viswanathan; Krishnan ; et al. | 2007-10-25 |
| Organosulfur oxidation process Grant 7,270,742 - Karas , et al. September 18, 2 | 2007-09-18 |
| Purification of N-(2-hydroxyethyl)-2-pyrrolidone Grant 7,238,260 - Kahn , et al. July 3, 2 | 2007-07-03 |
| Desulfurization process Grant 7,144,499 - Han , et al. December 5, 2 | 2006-12-05 |
| Purification of N-(2-hydroxyethyl)-2-pyrrolidone App 20060086602 - Kahn; Andrew P. ; et al. | 2006-04-27 |
| Desulfurization process App 20050109677 - Han, Yuan-Zhang ; et al. | 2005-05-26 |
| Organosulfur oxidation process App 20040178122 - Karas, Lawrence J. ; et al. | 2004-09-16 |
| Organosulfur oxidation process App 20040178121 - Leyshon, David W. ; et al. | 2004-09-16 |
| Peroxide impurities removal Grant 6,755,979 - Williams , et al. June 29, 2 | 2004-06-29 |
| Peroxide impurities removal App 20040031763 - Williams, Carl L. ; et al. | 2004-02-19 |
| Methane conversion process Grant RE35,633 - Leyshon October 14, 1 | 1997-10-14 |
| Methane conversion process Grant RE35,632 - Leyshon October 14, 1 | 1997-10-14 |
| Production of olefins from a mixture of Cu.sup.+ olefins and paraffins Grant 5,043,522 - Leyshon , et al. August 27, 1 | 1991-08-27 |
| Enhanced production of ethylene from higher hydrocarbons Grant 5,026,935 - Leyshon , et al. June 25, 1 | 1991-06-25 |
| Enhanced production of propylene from higher hydrocarbons Grant 5,026,936 - Leyshon , et al. June 25, 1 | 1991-06-25 |
| Thin bed cofeed reactors for methane conversion Grant 4,876,409 - Leyshon , et al. October 24, 1 | 1989-10-24 |
| Fluid bed calcination process Grant 4,017,585 - Angevine , et al. April 12, 1 | 1977-04-12 |
| Fluidized bed process Grant 3,998,929 - Leyshon December 21, 1 | 1976-12-21 |
uspto.report is an independent third-party trademark research tool that is not affiliated, endorsed, or sponsored by the United States Patent and Trademark Office (USPTO) or any other governmental organization. The information provided by uspto.report is based on publicly available data at the time of writing and is intended for informational purposes only.
While we strive to provide accurate and up-to-date information, we do not guarantee the accuracy, completeness, reliability, or suitability of the information displayed on this site. The use of this site is at your own risk. Any reliance you place on such information is therefore strictly at your own risk.
All official trademark data, including owner information, should be verified by visiting the official USPTO website at www.uspto.gov. This site is not intended to replace professional legal advice and should not be used as a substitute for consulting with a legal professional who is knowledgeable about trademark law.
| 