IP Library › Granted Patent US 5,094,716
Granted Patent Utility
US 5,094,716 · App. 07/584,955

Use of anionic surfactant/dispersant blends for the deinking of groundwood newsprint

Inventor: Mary Beth Letscher
Patented Case View Patent ↗
Granted: Mar 10, 1992 Filed: Sep 19, 1990
Inventor
Mary Beth Letscher
Assignee (at issue)
Betz PaperChem Inc.

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Quick Facts
Patent No.
US 5,094,716
App. No.
07/584,955
Filed
1990-09-19
Granted
1992-03-10
Kind
A