Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6585960 | Abrasive silica compositions and dentifrice compositions prepared therefrom | Michael Thomas, Sandra Joan Kempske | 2003-07-01 |
| 6440397 | Abrasive silica compositions and dentifrice compositions prepared therefrom | Michael Thomas, Sandra Joan Kempske | 2002-08-27 |
| 6294155 | Abrasive silica compositions and dentifrice compositions prepared therefrom | Michael Thomas, Sandra Joan Kempske | 2001-09-25 |
| 5141912 | Chrome/platinum/palladium catalyst for hydrocarbon emission control | Dean A. Denton, Richard A. Carman | 1992-08-25 |
| 5102850 | Catalyst supports having promoter oxide gradient, resulting catalyst and method of making the supports | Moises G. Sanchez, Stephen R. Schmidt | 1992-04-07 |
| 4977129 | Auto exhaust catalyst composition having low H.sub.2 S emissions and method of making the catalyst | — | 1990-12-11 |
| 4780447 | Catalysts for controlling auto exhaust emissions including hydrocarbon, carbon monoxide, nitrogen oxides and hydrogen sulfide and method of making the catalysts | Gwan Kim, Stanislaw Plecha | 1988-10-25 |
| 4654319 | Doubly promoted platinum group metal catalysts for emission control and method for making the catalysts | Gwan Kim | 1987-03-31 |
| 4591580 | Stabilized and doubly promoted platinum group metal catalysts for emission control and method of making same | Gwan Kim | 1986-05-27 |
| 4585752 | Catalyst composition for ultra high temperature operation | — | 1986-04-29 |
| 4513101 | Small bead auto exhaust catalyst | Alan W. Peters, Gwan Kim | 1985-04-23 |
| 4476246 | Doubly promoted platinum group metal catalysts for emission control | Gwan Kim | 1984-10-09 |
| 4451441 | Method for exhaust gas treatment | James M. Maselli | 1984-05-29 |
| 4426320 | Catalyst composition for exhaust gas treatment | James M. Maselli | 1984-01-17 |
| 4390456 | Spheroidal alumina particles and catalysts employing the particles as a support | Moises G. Sanchez, Norman R. Laine | 1983-06-28 |
| 4303552 | Diesel exhaust catalyst | William A. Welsh | 1981-12-01 |
| 4279779 | Spheroidal alumina particles and catalysts employing the particles as a support | Moises G. Sanchez, Norman R. Laine | 1981-07-21 |