IP Library › Granted Patent US 4,758,633
Granted Patent Utility
US 4,758,633 · App. 07/023,317

Insoluble vinyl lactam clarifiers

Inventors: William L. Mandella, Eugene V. Hort
Patented Case View Patent ↗
Granted: Jul 19, 1988 Filed: Mar 9, 1987
Inventors
William L. Mandella
Eugene V. Hort
Assignee (at issue)
GAF Corporation

This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.

Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 4,758,633
App. No.
07/023,317
Filed
1987-03-09
Granted
1988-07-19
Kind
A