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. 01, 2006
Filed:
Nov. 16, 2004
Applicant:
Jay F. Miller, Chester Springs, PA (US);
Inventor:
Jay F. Miller, Chester Springs, PA (US);
Assignee:
Lyondell Chemical Technology, L.P., Greenville, DE (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D 303/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
Phosphine and/or phosphine oxide promoters are effectively separated from propylene oxide reaction solvents through use of a membrane effective to retain the phosphine and/or phosphine oxide.