Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 4771003 | Heat stable alkaline proteases produced by a bacillus | Edmund J. Stellwag, Donald R. Durham, Carol A. Nolf, David B. Stewart | 1988-09-13 | $245,000 |
| 4749653 | Enzyme immobilization on non-porous glass fibers | David M. Lee, Gary M. Nishioka, Carol A. Nolf | 1988-06-07 | $7,424,000 |
| 4610800 | Method for unclogging drainage pipes | Donald R. Durham, J. Leslie Glick, Douglas W. Fodge | 1986-09-09 | $976,000 |
| 4504582 | Vermiculite as a carrier support for immobilized biological materials | — | 1985-03-12 | $1,132,000 |
| 4434228 | Immobilization of biological materials in condensed polyalkyleneimine polymers | — | 1984-02-28 | $2,032,000 |
| 4250267 | Immobilized biological material | Frank J. Hartdegen | 1981-02-10 | $2,615,000 |
| 4237229 | Immobilization of biological material with polyurethane polymers | Frank J. Hartdegen | 1980-12-02 | $7,250,000 |
| 4195127 | Process for immobilizing proteins | Frank J. Hartdegen | 1980-03-25 | $7,907,000 |