Granted Patent
Utility
US 6,740,276 · App. 09/895,906
Process for preparing pigmented shaped articles comprising poly (trimethylene terephthalate)
Inventors:
Nirmal K. Agarwal, Jing-Chung Chang, Richard Lee Dommel, Joseph V. Kurian, Raymond Longhi
Patented Case
View Patent ↗
Granted: May 25, 2004
Filed: Jun 29, 2001
Inventors
Nirmal K. Agarwal
Jing-Chung Chang
Richard Lee Dommel
Joseph V. Kurian
Raymond Longhi
Assignee (at issue)
E.I. DU PONT DE NEMOURS AND COMPANY
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.