Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5853958 | Lithographic plate with disperse particulate rubber additive | Chieh-Min Cheng, Rong-Chang Liang, William C. Schwarzel, Leonard C. Wan | 1998-12-29 |
| 5620827 | On-press developable lithographic printing plate precursor | Chieh-Min Cheng, John M. Hardin, Rong-Chang Liang, Leonard C. Wan | 1997-04-15 |
| 5616449 | Lithographic printing plates with dispersed rubber additives | Chieh-Min Cheng, Rong-Chang Liang, William C. Schwarzel, Leonard C. Wan | 1997-04-01 |
| 5516620 | Method of on-press developing lithographic plates utilizing microencapsulated developers | Chieh-Min Cheng, John M. Hardin, Rong-Chang Liang, Leonard C. Wan | 1996-05-14 |
| 5407764 | Printing plate and methods of making and using same | Zafarullah K. Cheema, Eugene L. Langlais, Clarence F. St. Jacques | 1995-04-18 |
| 5258263 | Printing plate and methods of making and use same | Zafarullah K. Cheema, Eugene L. Langlais, Clarence F. St. Jacques | 1993-11-02 |