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:
Oct. 31, 2006
Filed:
Jan. 07, 2004
Applicants:
Finbar Gerald Mcdonnell, Cleveland, GB;
Clive Alexander Hamilton, North Yorkshire, GB;
Alexander Stuart Coote, Cleveland, GB;
Inventors:
Finbar Gerald McDonnell, Cleveland, GB;
Clive Alexander Hamilton, North Yorkshire, GB;
Alexander Stuart Coote, Cleveland, GB;
Assignee:
Invista North America S.A R.L., Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 63/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
An improved process for recycling unspent diol removed from a polyester manufacturing process wherein the diol is captured, hydrogenated, and recycled so that the final polyester product has improved color over polyesters produced using other recycled diols.