Granted Patent
Utility
US 6,333,392 · App. 09/565,483
Thermosetting amic acid microfine particles, thermosetting imide microfine particles, crosslinked imide microfine particles, and processes for their production
Inventors:
Katsuya Asao, Hidenori Saito
Patented Case
View Patent ↗
Granted: Dec 25, 2001
Filed: May 5, 2000
Inventors
Katsuya Asao
Hidenori Saito
Assignees (at issue)
SUMITOMO BAKELITE CO., LTD.
Osaka Prefectural Government
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.