Issued Patents All Time
Showing 25 most recent of 58 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6387248 | Method of preparing a catalyst for use in the hydrotreating of high boiling hydrocarbon feedstocks | David E. Sherwood, Jr. | 2002-05-14 |
| 5972205 | FCC process using binary molecular sieves having a core and shell of different structures and compositions | Chih-Hao M. Tsang, Randall H. Petty | 1999-10-26 |
| 5928499 | Hydroconversion process employing catalyst with specified pore size distribution, median pore diameter by surface area, and pore mode by volume | David E. Sherwood, Jr. | 1999-07-27 |
| 5888921 | Binary molecular sieves having a core and shell of different structures and compositions | Chih-Hao M. Tsang, Randall H. Petty | 1999-03-30 |
| 5856588 | Two-stage etherification of tertiary butyl alcohol using second stage zeolite catalysts for the intermediate preparation of isobutylene | John F. Knifton | 1999-01-05 |
| 5792890 | Method for the purification of tertiary butyl alcohol for use in the manufacture of methyl tertiary butyl ether | Laurence D. Neff, Kyle Preston, Rei-Yu J. Hwan, John F. Knifton | 1998-08-11 |
| 5756789 | Synthesis of metal--containing aluminophosphates with layered structure | David A. Bruce, Mark G. White, Joseph Aaron Bertrand, Randall H. Petty | 1998-05-26 |
| 5744652 | Method for the manufacture of methyl tertiary butyl ether from tertiary butyl alcohol and methanol | Laurence D. Neff, Kyle Preston, Rei-Yu J. Hwan | 1998-04-28 |
| 5723698 | Catalytic decomposition of formate impurities in tertiary butyl alcohol and methyl tertiary butyl ether streams | Laurence D. Neff, Kyle Preston, Rei-Yu J. Hwan | 1998-03-03 |
| 5716896 | One-step synthesis of methyl t-butyl ether from t-butanol using .beta.-zeolite catalysts modified with lithium plus rare earths | John F. Knifton | 1998-02-10 |
| 5690810 | Single-step process to upgrade naphthas to an improved gasoline blending stock | Richard Vance Lawrence | 1997-11-25 |
| 5637778 | Isopropyl alcohol and diispropyl ether production from crude by-product acetone in one step | Robert J. Taylor, Jr., John F. Knifton, Bobby R. Martin | 1997-06-10 |
| 5616530 | Hydroconversion process employing catalyst with specified pore size distribution | David E. Sherwood, Jr., Charles N. Campbell, II | 1997-04-01 |
| 5583266 | Integrated process for the production of isopropyl alcohol and diisopropyl ethers | Robert J. Taylor, Jr., John F. Knifton | 1996-12-10 |
| 5549813 | FCC process employing low unit cell size y-zeolites | Chih-Hao M. Tsang, Laurence D. Neff, Randall H. Petty | 1996-08-27 |
| 5550300 | Gradient catalyst system for the integrated production of isopropyl alcohol and diisopropyl ethers | Robert J. Taylor, Jr., John F. Knifton | 1996-08-27 |
| 5545602 | Catalyst with specified pore size distribution | Gerald V. Nelson, Govanon Nongbri, Roy E. Pratt, David E. Sherwood, Jr. | 1996-08-13 |
| 5534135 | Synthesis of zeolites | David E. Sherwood, Jr., Burton H. Bartley | 1996-07-09 |
| 5514273 | Hydroconversion process employing catalyst with specified pore size distribution | David E. Sherwood, Jr., Charles N. Campbell, II | 1996-05-07 |
| 5498586 | Catalyst with specified pore size distribution | David E. Sherwood, Jr. | 1996-03-12 |
| 5488179 | Ditertiary butyl peroxide preparation from tertiary butyl hydroperoxide | John F. Knifton, Edward T. Marquis | 1996-01-30 |
| 5488178 | Ditertiary butyl peroxide preparation from tertiary butyl hydroperoxide | John F. Knifton, Edward T. Marquis | 1996-01-30 |
| 5476972 | Isopropyl alcohol and ether production from crude by-product acetone | Robert J. Taylor, Jr., John F. Knifton, Bobby R. Martin | 1995-12-19 |
| 5472594 | FCC process for producing enhanced yields of C.sub.4 /C.sub.5 olefins | Chih-Hao M. Tsang, Laurence D. Neff | 1995-12-05 |
| 5459118 | Hydrotalcite-containing catalyst composition | David E. Sherwood, Jr., Randall H. Petty | 1995-10-17 |