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:
Sep. 24, 2002
Filed:
Jun. 21, 2001
Deborah Barnette, Ellicott City, MD (US);
James English, Chelsea, AL (US);
Keith Branham, Pelham, AL (US);
Donna Hall, Verbena, AL (US);
Reuben Land, Huntingtown, MD (US);
Doug Mink, Baltimore, MD (US);
Zhong Zhao, Ellicott City, MD (US);
Guilford Pharmaceuticals Inc., Baltimore, MD (US);
Abstract
The present invention provides improved processes for purifying polymer preparations by removing contaminants, such as metal contaminants. The present invention also provides improved processes for producing phosphopolymers, which can yield improved polymers in terms of molecular weight, homogeneity, consistency and purity. Polymers and polymer preparations also are provided. The present invention is time, labor and energy efficient, and thus marks an improvement over past approaches.