Granted Patent
Utility
US 5,926,250 · App. 08/894,505
Multifocal lens for eyeglass and eyeglass lens
Inventors:
Hiroyuki Mukaiyama, Kazutoshi Kato, Akira Komatsu, Tadashi Kaga
Patented Case
View Patent ↗
Granted: Jul 20, 1999
Filed: Jul 24, 1997
Inventors
Hiroyuki Mukaiyama
Kazutoshi Kato
Akira Komatsu
Tadashi Kaga
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.