Granted Patent
Utility
US 6,130,299 · App. 08/974,922
Method for preparing conjugated diene polymer
Inventors:
Takuo Sone, Akio Takashima, Katsutoshi Nonaka, Iwakazu Hattori
Patented Case
View Patent ↗
Granted: Oct 10, 2000
Filed: Nov 20, 1997
Inventors
Takuo Sone
Akio Takashima
Katsutoshi Nonaka
Iwakazu Hattori
Assignee (at issue)
JSR CORPORATION
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.