Granted Patent
Utility
US 5,911,899 · App. 08/661,673
Corrosion-proof transparent heater panels and preparation process thereof
Inventors:
Masaaki Yoshikai, Koichi Takahashi, Masato Koyama, Yuichiro Harada, Yoshihiro Sakai, Akemi Nakajima, Toshihiro Dodo
Patented Case
View Patent ↗
Granted: Jun 15, 1999
Filed: Jun 11, 1996
Inventors
Masaaki Yoshikai
Koichi Takahashi
Masato Koyama
Yuichiro Harada
Yoshihiro Sakai
Akemi Nakajima
Toshihiro Dodo
Assignee (at issue)
MITSUI CHEMICALS, INC.
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.