Patent | Date |
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Method for pretreating and using copper-based catalyst Grant 9,725,403 - Gao August 8, 2 | 2017-08-08 |
Solid base catalyst and method for making and using the same Grant 9,302,259 - Chen , et al. April 5, 2 | 2016-04-05 |
Sulfur-containing palladium-carbon catalyst and method for preparing and using the same Grant 9,248,443 - Li , et al. February 2, 2 | 2016-02-02 |
Process tank for producing insoluble sulfur Grant 9,187,326 - Chen , et al. November 17, 2 | 2015-11-17 |
Solid acid catalyst and method for preparing and using the same Grant 9,186,660 - Chen November 17, 2 | 2015-11-17 |
Method For Pretreating And Using Copper-based Catalyst App 20150175523 - GAO; Shiming | 2015-06-25 |
Process for preparing alkylated p-phenylenediamines Grant 9,029,603 - Feng , et al. May 12, 2 | 2015-05-12 |
Method for pretreating and using copper-based catalyst Grant 9,006,489 - Gao April 14, 2 | 2015-04-14 |
Process for preparing 4-aminodiphenylamine Grant 8,686,188 - Feng , et al. April 1, 2 | 2014-04-01 |
Falling film evaporator Grant 8,486,223 - Feng , et al. July 16, 2 | 2013-07-16 |
Sulfur-containing Palladium-carbon Catalyst And Method For Preparing And Using The Same App 20130079559 - LI; Xiaonian ;   et al. | 2013-03-28 |
Solid Base Catalyst And Method For Making And Using The Same App 20130079560 - CHEN; Xinmin ;   et al. | 2013-03-28 |
Process For Preparing Alkylated P-phenylenediamines App 20130066113 - FENG; Xiaogen ;   et al. | 2013-03-14 |
Process Tank For Producing Insoluble Sulfur App 20130052122 - CHEN; Xinmin ;   et al. | 2013-02-28 |
Solid Acid Catalyst And Method For Preparing And Using The Same App 20130015407 - CHEN; Xinmin | 2013-01-17 |
Spherical rubber chemicals and the method for preparing the same Grant 8,349,230 - Wang , et al. January 8, 2 | 2013-01-08 |
Method For Pretreating And Using Copper-based Catalyst App 20120316363 - GAO; SHIMING | 2012-12-13 |
Solid acid catalyst and method for preparing and using the same Grant 8,293,137 - Chen October 23, 2 | 2012-10-23 |
Process for preparing 4-aminodiphenylamine Grant 8,293,673 - Feng , et al. October 23, 2 | 2012-10-23 |
Magnetic separation apparatus and method for recovery of solid material from solid-liquid mixture Grant 8,206,596 - Wang , et al. June 26, 2 | 2012-06-26 |
Process For Preparing 4-aminodiphenylamine App 20120053367 - FENG; Xiaogen ;   et al. | 2012-03-01 |
Spherical rubber chemicals and the method for preparing the same Grant 8,066,919 - Wang , et al. November 29, 2 | 2011-11-29 |
Falling Film Evaporator App 20110226606 - FENG; Xiaogen ;   et al. | 2011-09-22 |
Process for preparing 4-aminodiphenylamine Grant 7,989,662 - Feng , et al. August 2, 2 | 2011-08-02 |
Solid Acid Catalyst And Method For Preparing And Using The Same App 20110155961 - CHEN; Xinmin | 2011-06-30 |
Magnetic Separation Apparatus and Method for Recovery of Solid Material From Solid-Liquid Mixture App 20100228056 - Wang; Nongyue ;   et al. | 2010-09-09 |
Process For Preparing 4-aminodiphenylamine App 20090048465 - Feng; Xiaogen ;   et al. | 2009-02-19 |