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. 27, 1985
Filed:
Oct. 13, 1983
Terumo Corporation, Tokyo, JP;
Abstract
Hot-water extracts of the neem bark produced by treating the bark of neem with water at a temperature from 0.degree. to 40.degree. C. and subjecting the residue from said pre-extraction treatment to extraction treatment with hot water. Purification of the extract thus produced by means of alcohol precipitation or dialysis gives products of a higher purity. Moreover, treatments prior to the pre-extraction treatment with water at 0.degree.-40.degree. C. with a non-polar organic solvent having a dielectric constant of 10 or lower and a polar organic solvent having a dielectric constant from 15 to 35 yields neem extracts of a further higher purity. The hot-water extracts of the neem bark according to the present invention possess activity against mouse L-5178Y cells and transplanted sarcoma 180 tumors.