Granted Patent
Utility
US 6,202,462 · App. 09/084,335
Method of forming noise-damping material with ultra-thin viscoelastic layer
Inventors:
Richard M. Hansen, Edward J. Vydra
Patented Case
View Patent ↗
Granted: Mar 20, 2001
Filed: May 26, 1998
Inventors
Richard M. Hansen
Edward J. Vydra
Assignee (at issue)
MATERIAL SCIENCE CO., LTD.
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.