Granted Patent
Utility
US 5,434,204 · App. 07/960,766
Colored styrenic resin composition
Inventors:
Masato Takaku, Mune Iwamoto, Masaru Honma, Atsushi Hashimoto
Patented Case
View Patent ↗
Granted: Jul 18, 1995
Filed: Oct 14, 1992
Inventors
Masato Takaku
Mune Iwamoto
Masaru Honma
Atsushi Hashimoto
Assignee (at issue)
Mitsui Toatsu Chemicals, Incorporated
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.