Granted Patent
Utility
US 4,961,921 · App. 07/341,322
Non-aerosol pump spray compositions
Inventors:
Jui-Chang Chuang, Edward W. Walls, Jr., Stephen C. Johnson
Patented Case
View Patent ↗
Granted: Oct 9, 1990
Filed: Apr 21, 1989
Inventors
Jui-Chang Chuang
Edward W. Walls, Jr.
Stephen C. Johnson
Assignee (at issue)
GAF Chemicals 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.