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:
Mar. 10, 1981
Filed:
Jan. 22, 1979
Joseph E Fields, Ballwin, MO (US);
Samuel S Asculai, St. Louis, MO (US);
John H Johnson, Kirkwood, MO (US);
Monsanto Company, St. Louis, MO (US);
Abstract
The disclosure relates to copolymers of olefin monomers having from 2 to about 4 carbon atoms and .alpha.,.beta.-unsaturated polycarboxylic anhydrides having from 4 to about 6 carbon atoms, having an average molecular weight of from about 300 to about 1500, and derivatized to contain both a half-amide, half-carboxylate salt function and an imide function in which said imide function comprises from about 5% to about 40% of said derivatized function. The utility of these copolymers in the management of tumor therapy to prevent tumor recurrence or development of metastases by an immunoregulatory mechanism has been demonstrated in rats and mice.