Granted Patent
Utility
US 6,624,255 · App. 09/954,060
Polymer material for use in optical communication parts
Inventors:
Takeshi Koyano, Yoshinori Maeno, Juro Mita, Katsuaki Kaifu
Patented Case
View Patent ↗
Granted: Sep 23, 2003
Filed: Sep 18, 2001
Inventors
Takeshi Koyano
Yoshinori Maeno
Juro Mita
Katsuaki Kaifu
Assignee (at issue)
OKI ELECTRIC INDUSTRY 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.