Granted Patent
Utility
US 5,506,304 · App. 08/264,911
Process for continuously preparing rubber modified styrene resins
Inventors:
Shiro Otsuzuki, Mune Iwamoto, Akihiko Nakajima, Masato Takaku, Hisao Morita, Takao Kobayashi, Toshihiko Ando
Patented Case
View Patent ↗
Granted: Apr 9, 1996
Filed: Jun 24, 1994
Inventors
Shiro Otsuzuki
Mune Iwamoto
Akihiko Nakajima
Masato Takaku
Hisao Morita
Takao Kobayashi
Toshihiko Ando
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.