Granted Patent
Utility
US 6,300,452 · App. 09/442,403
Block copolymers and preparation thereof
Inventors:
Harri Jukarainen, Jarkko Ruohonen, Matti Lehtinen, Juha Ala-Sorvari, Jukka Seppala
Patented Case
View Patent ↗
Granted: Oct 9, 2001
Filed: Nov 18, 1999
Inventors
Harri Jukarainen
Jarkko Ruohonen
Matti Lehtinen
Juha Ala-Sorvari
Jukka Seppala
Assignee (at issue)
Leiras Oy
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.