Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5885413 | Deinking wastepaper containing electrostatic printed ink using branched alcohol alkoxylate surfactant | Frank J. Sutman | 1999-03-23 |
| 5302242 | Process and composition for deinking dry toner electrostatic printed wastepaper | Mary Beth Letscher | 1994-04-12 |
| 5282997 | Process and composition for deinking dry toner electrostatic printed wastepaper | Mary Beth Letscher | 1994-02-01 |
| 5248388 | Use of surfactants having an HLB less than 10 in the deinking of dry toner electrostatic printed wastepaper | Mary Beth Letscher | 1993-09-28 |
| 5200034 | Use of surfactants having an HLB less than 10 in the deinking of dry toner electrostatic printed wastepaper | Mary Beth Letscher | 1993-04-06 |