Granted Patent
Utility
US 5,019,548 · App. 07/397,821
Heat sensitive recording material
Inventors:
Toshitake Suzuki, Fumio Seyama, Shuki Okauchi, Toranosuke Saito, Masakatu Kitani, Takashi Ishibashi
Patented Case
View Patent ↗
Granted: May 28, 1991
Filed: Aug 24, 1989
Inventors
Toshitake Suzuki
Fumio Seyama
Shuki Okauchi
Toranosuke Saito
Masakatu Kitani
Takashi Ishibashi
Assignees (at issue)
Kanzaki Paper Manufacturing Co., Ltd.
Sanko Kaihatsu Kagaku Kenkyusho
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.