Granted Patent
Utility
US 4,987,017 · App. 07/489,721
Thermoplastic elastomer composition and Freon gas hose made thereof
Inventors:
Hozumi Sato, Humito Shimada, Akio Sakaguchi, Yasuhiko Takemura, Tadaaki Nishi, Hisao Ono, Masanobu Nagano, Takumi Miyachi
Patented Case
View Patent ↗
Granted: Jan 22, 1991
Filed: Feb 28, 1990
Inventors
Hozumi Sato
Humito Shimada
Akio Sakaguchi
Yasuhiko Takemura
Tadaaki Nishi
Hisao Ono
Masanobu Nagano
Takumi Miyachi
Assignee (at issue)
Japan Synthetic Rubber 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.