Granted Patent
Utility
US 6,229,782 · App. 09/179,278
High numerical aperture optical focusing device for use in data storage systems
Inventors:
Yugang Wang, Chuan He, Hong Chen, Joseph J. Miceli, Charles C. Cheng, Ross W Stovall
Patented Case
View Patent ↗
Granted: May 8, 2001
Filed: Oct 26, 1998
Inventors
Yugang Wang
Chuan He
Hong Chen
Joseph J. Miceli
Charles C. Cheng
Ross W Stovall
Assignee (at issue)
Read Rite 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.