Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10633798 | Blends of polymers as wet strengthening agents for paper | Cornel Hagiopol, David F. Townsend, Clay E. Ringold, Robert McDonald, Metric M. Simpson +1 more | 2020-04-28 |
| 10301777 | Wet strengthened fiber products, wet strengthening resins, and methods for making and using same | Cornel Hagiopol, David F. Townsend, Clay E. Ringold | 2019-05-28 |
| 10190261 | Strengthening resins for paper products | Clay E. Ringold, Cornel Hagiopol, Frederick S. Potter | 2019-01-29 |
| 10144818 | Resin compositions and methods for making and using same | Clay E. Ringold, David F. Townsend, Cornel Hagiopol | 2018-12-04 |
| 9834890 | Blends of polymers as wet strengthening agents for paper | Cornel Hagiopol, David F. Townsend, Clay E. Ringold, Robert McDonald, Metric M. Simpson +1 more | 2017-12-05 |
| 9695552 | Wet strengthened fiber products, wet strengthening resins, and methods for making and using same | Cornel Hagiopol, David F. Townsend, Clay E. Ringold | 2017-07-04 |
| 9689114 | Strengthening resins for paper products | Clay E. Ringold, Cornel Hagiopol, Frederick S. Potter | 2017-06-27 |
| 9506196 | Blends of polymers as wet strengthening agents for paper | Cornel Hagiopol, David F. Townsend, Clay E. Ringold, Robert McDonald, Metric M. Simpson +1 more | 2016-11-29 |
| 9353483 | Paper products containing a polymeric wet strengthening agent | Cornel Hagiopol, David F. Townsend, Clay E. Ringold, Robert McDonald, Metric M. Simpson +1 more | 2016-05-31 |
| 8999110 | Blends of polymers as wet strengthening agents for paper | Cornel Hagiopol, David F. Townsend, Clay E. Ringold, Robert McDonald, Metric M. Simpson +1 more | 2015-04-07 |
| 8557925 | Blends of anionic copolymers suitable for surface size and methods of making the same | Cornel Hagiopol, Sean M. Tyler, Michael J. Bush | 2013-10-15 |
| 7897013 | Blends of glyoxalated polyacrylamides and paper strengthening agents | Cornel Hagiopol, Yuping Luo, David F. Townsend, Clay E. Ringold, Karla D. Favors | 2011-03-01 |
| 7863395 | Polyacrylamide-based strengthening agent | Cornel Hagiopol, Yuping Luo, David F. Townsend | 2011-01-04 |
| 7488403 | Blends of glyoxalated polyacrylamides and paper strengthening agents | Cornel Hagiopol, Yuping Luo, David F. Townsend, Clay E. Ringold, Karla D. Favors | 2009-02-10 |
| 7288158 | Manufacturing process for producing high strength steel product with improved formability | Barton Thomson | 2007-10-30 |
| 7119148 | Glyoxylated polyacrylamide composition strengthening agent | Cornel Hagiopol, Yuping Luo, David F. Townsend, Karla D. Favors, Clay E. Ringold +2 more | 2006-10-10 |
| 7034087 | Aldehyde scavengers for preparing temporary wet strength resins with longer shelf life | Cornel Hagiopol, Yuping Luo, David F. Townsend | 2006-04-25 |