Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10035745 | Methods of purifying crude sevoflurane | Yongxian Zeng, Hong-Chang Lee | 2018-07-31 |
| 9353038 | Methods for preparing fluorinated vinyl ethers | Chialang Huang | 2016-05-31 |
| 9102604 | Methods for cleaning distilling columns | Leonid A. Rozov, Hong-Chang Lee, Ronald Bell | 2015-08-11 |
| 8729313 | Process for the manufacturing of sevoflurane | Ronald Bell, Yongxian Zeng, Leonid A. Rozov | 2014-05-20 |
| 5886239 | Method of preparing monofluoromethyl ethers | Ralph A. Lessor, Leonid A. Rozov, Keith Ramig | 1999-03-23 |
| 5621115 | Methods for preparing 5-aroyl-1,2-dihydro-3H-pyrrolo-[1,2-A]pyrrole-1-carboxylic acids | Ralph A. Lessor, Keith Ramig | 1997-04-15 |
| 5013742 | 4-phenyl-4-N-(phenyl) amido piperidine derivatives and pharmaceutical compositions and method employing such compounds | H. Kenneth Spencer, Sherry A. Severnak | 1991-05-07 |
| RE33495 | Stereoselective preparation of 3-substituted-4-anilino-piperidine compounds and derivatives | H. Kenneth Spencer, Sherry A. Savernak | 1990-12-18 |
| 4957929 | 4-phenyl-4-[N-(phenyl)amido]piperidine compounds and pharmaceutical compositions employing such compounds | H. Kenneth Spencer, Sherry A. Severnak | 1990-09-18 |
| 4921864 | 4-Phenyl-4-(N-(phenyl)amido) piperidine derivatives and pharmaceutical compositions and method employing such compounds | H. Kenneth Spencer, Sherry A. Severnak | 1990-05-01 |
| 4871749 | 4-heteropentacyclic-4-(N-(phenyl)amido) piperidine derivatives and pharamaceutical compositions and method employing such compounds | Bor-Sheng Lin, H. Kenneth Spencer | 1989-10-03 |
| 4849521 | Stereoselective preparation of 3-substituted-4-piperidine compounds and derivatives | H. Kenneth Spencer, Sherry A. Severnak | 1989-07-18 |
| 4801615 | 4-heterohexacyclic-4-(N-(phenyl)amido) piperidine derivatives and pharmaceutical compositions and method employing such compounds | H. Kenneth Spencer | 1989-01-31 |
| 4791120 | 4-heteropentacyclic-4-[N-(phenyl)amino] piperidine derivatives and pharmaceutical compositions and method employing such compounds | Bor-Sheng Lin, H. Kenneth Spencer | 1988-12-13 |
| 4791121 | 4-phenyl-4-(N-(phenyl)amido) piperidine derivatives and pharmaceutical compositions and method employing such compounds | H. Kenneth Spencer, Sherry A. Severnak | 1988-12-13 |
| 4584303 | N-aryl-N-(4-piperidinyl)amides and pharmaceutical compositions and method employing such compounds | Bao-Shan Huang, Ross C. Terrell, Kirsten H. Deutsche, Nhora L. Lalinde | 1986-04-22 |