Granted Patent
Utility
US 5,502,565 · App. 08/293,010
Method and apparatus for measuring the flying height of a magnetic head above a disk surface at three wavelengths
Inventors:
Tadashi Fukuzawa, Teiji Hisano, Tetsuji Morita, Koichi Ikarugi
Patented Case
View Patent ↗
Granted: Mar 26, 1996
Filed: Aug 19, 1994
Inventors
Tadashi Fukuzawa
Teiji Hisano
Tetsuji Morita
Koichi Ikarugi
Assignee (at issue)
International Business Machines 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.