Granted Patent
Utility
US 4,917,983 · App. 07/183,332
Toner for developing an electrostatic latent image comprising linear polyester polymer
Inventors:
Masafumi Uchida, Hiroyuki Takagiwa, Satoru Ikeuchi
Patented Case
View Patent ↗
Granted: Apr 17, 1990
Filed: Apr 7, 1988
Inventors
Masafumi Uchida
Hiroyuki Takagiwa
Satoru Ikeuchi
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.