Granted Patent
Utility
US 5,843,524 · App. 08/796,603
Vinyl halide polymer color concentrate
Inventors:
Surachai Wimolkiatisak, Dennis L. Hammond, Anthony S. Scheibelhoffer, Allen W. Carlson, Mir Ali
Patented Case
View Patent ↗
Granted: Dec 1, 1998
Filed: Feb 7, 1997
Inventors
Surachai Wimolkiatisak
Dennis L. Hammond
Anthony S. Scheibelhoffer
Allen W. Carlson
Mir Ali
Assignee (at issue)
Ferro 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.