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:
Jan. 29, 2008
Filed:
Oct. 26, 2005
Applicants:
Jayne Mallwitz, Louisville, KY (US);
Robert C. Hire, Dayville, CT (US);
Kiran B. Chandalia, Fairfield, CT (US);
Inventors:
Jayne Mallwitz, Louisville, KY (US);
Robert C. Hire, Dayville, CT (US);
Kiran B. Chandalia, Fairfield, CT (US);
Assignee:
Arch Chemicals, Inc., Norwalk, CT (US);
Primary Examiner:
Int. Cl.
CPC ...
C09K 15/24 (2006.01); C09K 15/32 (2006.01); C07C 43/205 (2006.01); C07F 9/6574 (2006.01); C08K 5/52 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to the color stabilization of hydroquinone hydroxyethyl ethers by phosphite compounds containing the bis-cyclic structure of spiro phosphites, both rings being attached to the same tertiary carbon atom in the phosphite molecule.