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:
Dec. 18, 2001
Filed:
Sep. 16, 1998
Applicant:
Inventors:
Chi-San Wu, Wayne, NJ (US);
Laurence Senak, West Orange, NJ (US);
Donna Osborne, Saddle River, NJ (US);
James F. Curry, Wayne, NJ (US);
Charles B. Schriver, Wayne, NJ (US);
Irwin B. Silverstein, Piscataway, NJ (US);
Assignee:
ISP Investments Inc., Wilmington, DE (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B65B 5/502 ;
U.S. Cl.
CPC ...
B65B 5/502 ;
Abstract
This invention concerns a stabilized packaging environment for a particulate vinyl lactam polymer, particularly polyvinylpyrrolidone particles, which comprises a sealed, oxygen-impervious receptacle containing said polymer particles and a separate air permeable package within the receptacle containing a water moistened oxygen scavenging agent, preferably iron powder, an iron (II) salt, ascorbic acid or a mixture of such agents.