Freis; Richard E.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Freis; Richard E..The latest application filed is for "methods of decontaminating secondary fiber".
- Freis; Richard E. - Bloomington MN
- Freis; Richard E. - Minneapolis MN
| Patent | Date |
|---|---|
| Methods of decontaminating secondary fiber Grant 4,643,800 - Maloney , et al. * February 17, 1 | 1987-02-17 |
| Methods of deinking secondary fibers Grant 4,518,459 - Freis , et al. May 21, 1 | 1985-05-21 |
| Isocyanate-capped surface active compositions and methods of using them Grant 3,960,781 - Freis , et al. June 1, 1 | 1976-06-01 |
| Process of making paper using mono-isocyanate capped poly (oxyalkylene) diols as a re-wetting and defoaming agent Grant 3,899,387 - Freis , et al. August 12, 1 | 1975-08-12 |
| Detergent compositions and methods of making and using them Grant 3,887,480 - Rue , et al. June 3, 1 | 1975-06-03 |
| Acrylamide Of Methacrylamide Monomer With N-substituted Amininmide Residues Grant 3,728,387 - Freis , et al. April 17, 1 | 1973-04-17 |
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