Granted Patent
Utility
US 4,134,841 · App. 05/885,297
Fiber lubricants
Inventors:
Kisoon Park, Robert H. Lowery
Patented Case
View Patent ↗
Granted: Jan 16, 1979
Filed: Mar 10, 1978
Inventors
Kisoon Park
Robert H. Lowery
Assignee (at issue)
Union Carbide 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.