Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10633798 | Blends of polymers as wet strengthening agents for paper | Cornel Hagiopol, David F. Townsend, Clay E. Ringold, James W. Johnston, Robert McDonald +1 more | 2020-04-28 |
| 10190261 | Strengthening resins for paper products | Clay E. Ringold, Cornel Hagiopol, James W. Johnston | 2019-01-29 |
| 9834890 | Blends of polymers as wet strengthening agents for paper | Cornel Hagiopol, David F. Townsend, Clay E. Ringold, James W. Johnston, Robert McDonald +1 more | 2017-12-05 |
| 9689114 | Strengthening resins for paper products | Clay E. Ringold, Cornel Hagiopol, James W. Johnston | 2017-06-27 |
| 9506196 | Blends of polymers as wet strengthening agents for paper | Cornel Hagiopol, David F. Townsend, Clay E. Ringold, James W. Johnston, Robert McDonald +1 more | 2016-11-29 |
| 9353483 | Paper products containing a polymeric wet strengthening agent | Cornel Hagiopol, David F. Townsend, Clay E. Ringold, James W. Johnston, Robert McDonald +1 more | 2016-05-31 |
| 8999110 | Blends of polymers as wet strengthening agents for paper | Cornel Hagiopol, David F. Townsend, Clay E. Ringold, James W. Johnston, Robert McDonald +1 more | 2015-04-07 |