Granted Patent
Utility
US 5,126,388 · App. 07/648,873
Highly-refractive plastic lens and process for making the lens
Inventors:
Teruyuki Nagata, Koju Okazaki, Nobuyuki Kajimoto, Tohru Miura, Yoshinobu Kanemura, Katsuyoshi Sasagawa
Patented Case
View Patent ↗
Granted: Jun 30, 1992
Filed: Jan 31, 1991
Inventors
Teruyuki Nagata
Koju Okazaki
Nobuyuki Kajimoto
Tohru Miura
Yoshinobu Kanemura
Katsuyoshi Sasagawa
Assignee (at issue)
Mitsui Toatsu Chemicals, Incorporated
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.