The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 02, 2005
Filed:
May. 07, 2003
Applicants:
John James Barnes, Hockessin, DE (US);
Kenneth Paul Kelch, Washington, WV (US);
Thomas D. Sandbrook, Mineral Wells, WV (US);
David John Van Bramer, Belpre, OH (US);
Inventors:
John James Barnes, Hockessin, DE (US);
Kenneth Paul Kelch, Washington, WV (US);
Thomas D. Sandbrook, Mineral Wells, WV (US);
David John Van Bramer, Belpre, OH (US);
Assignee:
E. I. du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C017/25 ; C07C017/093 ; C07C017/26 ; C07C017/35 ; C07C017/37 ;
U.S. Cl.
CPC ...
Abstract
The present invention relates to the process of pyrolyzing tetrafluoroethylene to hexafluoropropylene by carrying out the pyrolysis in a tubular reactor that is lined with either nickel or nickel alloy which contains no greater than 8 wt % chromium.