Granted Patent
Utility
US 4,631,251 · App. 06/771,000
Heat-developable color photo-sensitive material with polymeric coupler
Inventors:
Tawara Komamura, Shunji Suginaka, Kimie Tachibana
Patented Case
View Patent ↗
Granted: Dec 23, 1986
Filed: Aug 30, 1985
Inventors
Tawara Komamura
Shunji Suginaka
Kimie Tachibana
Assignee (at issue)
Konishiroku Photo 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.