Granted Patent
Utility
US 6,451,514 · App. 09/449,179
METHOD FOR FORMATION OF UPPER MAGNETIC POLE LAYER OF THIN FILM MAGNETIC HEAD, METHOD OF FORMING MINIATURE BLOCK PATTERN WITH HIGH ASPECT RATIO ON BOTTOM PART OF STEP ON SURFACE WITH STEP, AND THIN FILM MAGNETIC HEAD
Inventor:
Daisuke Iitsuka
Patented Case
View Patent ↗
Granted: Sep 17, 2002
Filed: Nov 24, 1999
Inventor
Daisuke Iitsuka
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.