Issued Patents All Time
Showing 1–21 of 21 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4863891 | Catalyst for the manufacture of acrylonitrile and methacrylonitrile | Robert K. Grasselli, Harley F. Hardman | 1989-09-05 |
| 4824063 | Drying board | — | 1989-04-25 |
| 4766232 | Production of unsaturated nitriles using catalysts containing boron, gallium or indium | Robert K. Grasselli, Dev D. Suresh | 1988-08-23 |
| 4622424 | Preparation of acrylic acid and methacrylic acid in a combination fixed-fluid bed reactor | James L. Callahan, Wilfrid G. Shaw | 1986-11-11 |
| 4528398 | Method for the preparation of unsaturated carboxylic acid with high activity phosphomolybdic acid based catalysts | James L. Callahan, Wilfrid G. Shaw | 1985-07-09 |
| 4508787 | Imidized surface protection for maleic anhydride interpolymer articles | William M. Giffen, Jr., George S. Li | 1985-04-02 |
| 4503001 | Process for the manufacture of acrylonitrile and methacrylonitrile | Robert K. Grasselli, Harley F. Hardman | 1985-03-05 |
| 4495109 | Production of unsaturated nitriles using catalysts promoted with various metals | Robert K. Grasselli, Dev D. Suresh | 1985-01-22 |
| 4470931 | Combination fixed-fluid bed reactor | James L. Callahan, Wilfrid G. Shaw | 1984-09-11 |
| 4444906 | Method for the preparation of high activity phosphomolybdic acid based catalysts | James L. Callahan, Wilfrid G. Shaw | 1984-04-24 |
| 4443555 | Method for the preparation of high activity phosphomolybdic acid based catalysts | James L. Callahan, Wilfrid G. Shaw | 1984-04-17 |
| 4381977 | Electrochemical maintenance of optimum catalytic activity in copper-catalyzed nitrile hydrolysis processes | V. Frances Gaylor, Janice L. Greene, Marty A. Pichler | 1983-05-03 |
| 4323703 | Process for the oxidation of olefins to aldehydes and acids | Robert K. Grasselli, Harley F. Hardman | 1982-04-06 |
| 4315838 | Catalyst preparation technique | James L. Callahan, Wilfrid G. Shaw | 1982-02-16 |
| 4313803 | Electrochemical maintenance of optimum catalytic activity in copper-catalyzed nitrile hydrolysis processes | V. Frances Gaylor, Janice L. Greene, Marty A. Pichler | 1982-02-02 |
| 4303550 | Methods for the regeneration of deactivated phosphomolybdic acid based catalysts | James L. Callahan, Wilfrid G. Shaw | 1981-12-01 |
| RE30569 | Process for preparing aggregates | James L. Callahan, Wilfrid G. Shaw | 1981-04-07 |
| 4246190 | Ammoxidation with tellurium catalysts | Robert K. Grasselli, Dev D. Suresh | 1981-01-20 |
| 4192776 | Catalysts and process for the ammoxidation of olefins | Robert K. Grasselli, Harley F. Hardman | 1980-03-11 |
| 4190556 | Production of unsaturated nitriles using catalysts promoted with various metals | Robert K. Grasselli, Dev D. Suresh | 1980-02-26 |
| 4182907 | Process for the oxidation of olefins to aldehydes and acids | Robert K. Grasselli, Harley F. Hardman | 1980-01-08 |