Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5250152 | Ethoxylated alcohol and dialkylphenol surfactants as Kraft pulping additives for reject reduction and yield increase | Tien-Feng Ling | 1993-10-05 |
| 4952277 | Process for producing kraft pulp for paper using nonionic surface active agents to improve pulp yield | Cheng-I Chen | 1990-08-28 |