Granted Patent
Utility
US 6,675,559 · App. 10/359,426
Method of rotary heat sealing articles between webs
Inventors:
Thomas F. Hilbert, Sr., Thomas Hilbert, Dale E. Lanser
Patented Case
View Patent ↗
Granted: Jan 13, 2004
Filed: Feb 7, 2003
Inventors
Thomas F. Hilbert, Sr.
Thomas Hilbert
Dale E. Lanser
Assignee (at issue)
Converting Biophile Laboratories, 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.