Granted Patent
Utility
US 5,560,873 · App. 08/367,381
Mild cold pearlizing concentrates
Inventors:
Pu Chen, Joseph H. Y. Niu, Siew Fang Yoong
Patented Case
View Patent ↗
Granted: Oct 1, 1996
Filed: Dec 30, 1994
Inventors
Pu Chen
Joseph H. Y. Niu
Siew Fang Yoong
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.