Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6048939 | Process aid for melt processible polymers | — | 2000-04-11 |
| 5707569 | Processing aid system for polyolefins | Charles W. Stewart | 1998-01-13 |
| 5587429 | Processing aid system for polyolefins | — | 1996-12-24 |
| 5464904 | Low-melting tetrafluoroethylene copolymer and its uses | George R. Chapman, Jr., Lewis E. Crenshaw, Rita S. McMinn, Richard A. Morgan, Charles W. Stewart +1 more | 1995-11-07 |
| 5266639 | Low-melting tetrafluorethylene copolymer and its uses | George R. Chapman, Jr., Lewis E. Crenshaw, Rita S. McMinn, Richard A. Morgan, Charles W. Stewart +4 more | 1993-11-30 |
| 5132368 | Fluoropolymer process aids containing functional groups | George R. Chapman, Jr., Charles W. Stewart, Robert E. Tarney | 1992-07-21 |
| 5106911 | Process and processing aid for extruding a hydrocarbon polymer | George R. Chapman, Jr. | 1992-04-21 |
| 5089200 | Process for melt extrusion of polymers | George R. Chapman, Jr., Rita S. McMinn, William L. Phillips | 1992-02-18 |
| 5064594 | Extrusion process for difficultly-melt-processible polymers | Robert E. Tarney | 1991-11-12 |
| 5057575 | Processing aid for polymers | George R. Chapman, Jr., Charles W. Stewart | 1991-10-15 |
| 5013792 | Processing aid for polymers | George R. Chapman, Jr., Charles W. Stewart | 1991-05-07 |
| 5010130 | High melt viscosity fluoropolymer process aid | George R. Chapman, Jr., Lee A. Gorthey | 1991-04-23 |
| 4904735 | Processing aid for polymers | George R. Chapman, Jr. | 1990-02-27 |