Granted Patent
Utility
US 5,643,636 · App. 08/590,756
Ceramic color composition and method for producing a glass sheet
Inventors:
Hiroshi Usui, Hitoshi Onoda, Tsuneo Manabe
Patented Case
View Patent ↗
Granted: Jul 1, 1997
Filed: Jan 24, 1996
Inventors
Hiroshi Usui
Hitoshi Onoda
Tsuneo Manabe
Assignee (at issue)
ASAHI GLASS 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.