Granted Patent
Utility
US 6,342,987 · App. 09/461,224
Head positioning mechanism for magnetic disk device provided with micro tracking actuator using magnetic force drive control method therefor
Inventors:
Toshiro Hattori, Hiroshi Kajitani, Masatomo Mizuta, Yoshiho Yanagita
Patented Case
View Patent ↗
Granted: Jan 29, 2002
Filed: Dec 16, 1999
Inventors
Toshiro Hattori
Hiroshi Kajitani
Masatomo Mizuta
Yoshiho Yanagita
Assignee (at issue)
NEC 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.