Granted Patent
Utility
US 6,623,555 · App. 09/584,397
Composite precipitated calcium carbonate/silicon compound pigment and method of making same
Inventors:
Jukka P. Haverinen, Eero H. Seuna, Henrik Fordsmand
Patented Case
View Patent ↗
Granted: Sep 23, 2003
Filed: Jun 1, 2000
Inventors
Jukka P. Haverinen
Eero H. Seuna
Henrik Fordsmand
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.