IP Library › Granted Patent US 5,248,388
Granted Patent Utility
US 5,248,388 · App. 07/871,362

Use of surfactants having an HLB less than 10 in the deinking of dry toner electrostatic printed wastepaper

Inventors: Sandra K. Richmann, Mary Beth Letscher
Patented Case View Patent ↗
Granted: Sep 28, 1993 Filed: Apr 20, 1992
Inventors
Sandra K. Richmann
Mary Beth Letscher
Assignee (at issue)
Betz PaperChem Inc.

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Quick Facts
Patent No.
US 5,248,388
App. No.
07/871,362
Filed
1992-04-20
Granted
1993-09-28
Kind
A