Granted Patent
Utility
US 4,859,493 · App. 07/032,307
Methods of forming synthetic diamond coatings on particles using microwaves
Inventor:
Jerome H. Lemelson
Patented Case
View Patent ↗
Granted: Aug 22, 1989
Filed: Mar 31, 1987
Inventor
Jerome H. Lemelson
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.