Granted Patent
Utility
US 5,587,217 · App. 08/497,431
Lubricant composition and method
Inventors:
James L. Chao, Yu-Cheun Lee, Chao Gao
Patented Case
View Patent ↗
Granted: Dec 24, 1996
Filed: Jun 30, 1995
Inventors
James L. Chao
Yu-Cheun Lee
Chao Gao
Assignee (at issue)
HMT Technology 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.