Granted Patent
Utility
US 4,581,283 · App. 06/611,439
Heat-sensitive magnetic transfer element
Inventors:
Yukio Tokunaga, Yasuhisa Ikeda, Tadao Seto, Yoshikazu Shimazaki
Patented Case
View Patent ↗
Granted: Apr 8, 1986
Filed: May 17, 1984
Inventors
Yukio Tokunaga
Yasuhisa Ikeda
Tadao Seto
Yoshikazu Shimazaki
Assignees (at issue)
Nippon Telegraph and Telephone Public Corporation
Fuji Kagakushi Kogyo Co., Ltd.
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.