Granted Patent
Utility
US 6,731,449 · App. 09/878,331
Magnetic recording writing circuit
Inventors:
Yasuhiro Okazaki, Takehiko Umeyama, Tsuyoshi Horiuchi, Hiroshi Murakami
Patented Case
View Patent ↗
Granted: May 4, 2004
Filed: Jun 12, 2001
Inventors
Yasuhiro Okazaki
Takehiko Umeyama
Tsuyoshi Horiuchi
Hiroshi Murakami
Assignees (at issue)
Renesas Technology Corporation
MITSUBISHI ELECTRIC ENGINEERING COMPANY, LIMITED
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.