Granted Patent
Utility
US 6,030,880 · App. 09/055,015
Alignment feature that avoids comet tail formation in spin-on materials and production method therefor
Inventor:
Walter A. Coutts
Patented Case
View Patent ↗
Granted: Feb 29, 2000
Filed: Apr 3, 1998
Inventor
Walter A. Coutts
Assignees (at issue)
SONY CORPORATION OF JAPAN
SONY ELECTRONICS INC.
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.