Granted Patent
Utility
US 5,622,784 · App. 08/183,105
Synthetic resin ophthalmic lens having an inorganic coating
Inventors:
Etsuo Okaue, Mikito Nakajima, Satoshi Kubota, Takao Mogami
Patented Case
View Patent ↗
Granted: Apr 22, 1997
Filed: Jan 18, 1994
Inventors
Etsuo Okaue
Mikito Nakajima
Satoshi Kubota
Takao Mogami
Assignee (at issue)
SEIKO EPSON 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.