IP Library Granted Patent US 4,699,723
Granted Patent Utility
US 4,699,723 · App. 06/898,276

Dispersant-antioxidant multifunction viscosity index improver

Inventors: Maria M. Kapuscinski, Ronald E. Jones
Patented Case View Patent ↗
Granted: Oct 13, 1987 Filed: Aug 20, 1986
Inventors
Maria M. Kapuscinski
Ronald E. Jones
Assignee (at issue)
Texaco Inc.

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 4,699,723
App. No.
06/898,276
Filed
1986-08-20
Granted
1987-10-13
Kind
A