Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9611590 | Creping adhesives and methods for making and using same | Clay E. Ringold, David F. Townsend, Cornel Hagiopol, Thomas L. Wright | 2017-04-04 |
| 8785593 | Polyamidoamine-epihalohydrin resins, method of manufacture, and uses thereof | Clay E. Ringold, Yuping Luo, Cornel Hagiopol | 2014-07-22 |
| 8246781 | Thermosetting creping adhesive with reactive modifiers | Clay E. Ringold, Dexter C. Johnson, David F. Townsend, Thomas L. Wright, Cornel Hagiopol | 2012-08-21 |
| 7897013 | Blends of glyoxalated polyacrylamides and paper strengthening agents | Cornel Hagiopol, Yuping Luo, David F. Townsend, James W. Johnston, Clay E. Ringold | 2011-03-01 |
| 7589153 | Glyoxalated inter-copolymers with high and adjustable charge density | Cornel Hagiopol, Yuping Luo, David F. Townsend, Clay E. Ringold | 2009-09-15 |
| 7488403 | Blends of glyoxalated polyacrylamides and paper strengthening agents | Cornel Hagiopol, Yuping Luo, David F. Townsend, James W. Johnston, Clay E. Ringold | 2009-02-10 |
| 7119148 | Glyoxylated polyacrylamide composition strengthening agent | Cornel Hagiopol, Yuping Luo, David F. Townsend, James W. Johnston, Clay E. Ringold +2 more | 2006-10-10 |
| 6787574 | Emulsification of alkenyl succinic anhydride size | Charles Farley, George J. Anderson | 2004-09-07 |