Patents per Year
Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 5304527 | Preparation for high activity, high density carbon | — | 1994-04-19 | $9,583,000 |
| 5238470 | Emission control device | Edward D. Tolles, Charles C. Matthews | 1993-08-24 | $10,860,000 |
| 5204310 | High activity, high density activated carbon | Edward D. Tolles, Charles C. Matthews | 1993-04-20 | $5,322,000 |
| 5008378 | Submicron lignin dispersions | — | 1991-04-16 | $4,415,000 |
| 4957557 | Submicron lignin dispersions | — | 1990-09-18 | $2,735,000 |
| 4891070 | Lignin amine salt as binder for aqueous printing ink composition | Peter Dilling | 1990-01-02 | $8,608,000 |
| 4740591 | Lignin by-products of paper-making process | Peter Dilling | 1988-04-26 | $4,667,000 |
| 4287104 | Tackifying composition for rubber | Carlton G. Force | 1981-09-01 | $4,020,000 |