Issued Patents All Time
Showing 1–23 of 23 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6485683 | Headquarter vehicles for chemical biological nuclear defense | — | 2002-11-26 |
| 5849818 | Skin sulfonated particles in matrices | Luis C. Mulford | 1998-12-15 |
| 5478540 | Removal of mercury heavy metal values employing sulfur trioxide | Luis C. Mulford | 1995-12-26 |
| 5334615 | Oil with bactericidal and virucidal properties | — | 1994-08-02 |
| 5261764 | In situ conversion of a single walled tank to a double walled tank | — | 1993-11-16 |
| 5233081 | Method for sulfonation using porous absorber material | — | 1993-08-03 |
| 5082740 | Plastic clad metal laminate for heat transfer partitions | Felix Achille, Terry H. Fiero, Steve Gregory, Timothy O. Kirch, Bradley D. Stevens | 1992-01-21 |
| 5030399 | Method of in-mold sulfonation of molded plastic article | — | 1991-07-09 |
| 4923753 | Controlled-release compositions for acids | Donald L. Tomkinson | 1990-05-08 |
| 4915912 | Apparatus for the generation of sulfur trioxide reagent and sulfonation of the surface of polymeric resins | Donald L. Tomkinson | 1990-04-10 |
| 4902493 | Process for the generation of sulfur trioxide reagent and sulfonation of the surface of polymeric resins | David R. Near, Donald L. Tomkinson | 1990-02-20 |
| 4775587 | Treatment of the interior surfaces of resinous enclosure members | — | 1988-10-04 |
| 4756844 | Controlled-release composition having a membrane comprising submicron particles | Donald L. Tomkinson | 1988-07-12 |
| 4745015 | Thermal insulating panel | Chin Huan Cheng | 1988-05-17 |
| 4741401 | Method for treating subterranean formations | Trevor Williamson, Donald L. Tomkinson | 1988-05-03 |
| 4647498 | Open-cell composition and method of making same | — | 1987-03-03 |
| 4615914 | Treatment of the interior surfaces of resinous enclosure members | — | 1986-10-07 |
| 4613524 | Open-cell composition and method of making same | — | 1986-09-23 |
| 4533484 | Pigments for toiletries | William H. Keskey, Richard G. Young | 1985-08-06 |
| 4462865 | Delignification of lignocellulosic materials with 2-imidazolidinones and 2-oxazolidinones | — | 1984-07-31 |
| 4457977 | Metallized plastic articles | — | 1984-07-03 |
| 4260225 | Energy saving radiant insulative device | — | 1981-04-07 |
| 4220739 | Method for sulfonating organic materials | — | 1980-09-02 |