Granted Patent
Utility
US 4,668,472 · App. 06/672,098
Slide for chemical analysis
Inventors:
Norio Sakamoto, Toshiyuki Ikariya, Kiyohiko Takahashi, Masao Nakamura, Akira Yanagisawa
Patented Case
View Patent ↗
Granted: May 26, 1987
Filed: Nov 15, 1984
Inventors
Norio Sakamoto
Toshiyuki Ikariya
Kiyohiko Takahashi
Masao Nakamura
Akira Yanagisawa
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.