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:
May. 24, 1977
Filed:
Sep. 16, 1975
Applicant:
Inventors:
Hirohide Takayama, Tokyo, JA;
Ippei Yoshimura, Mitaka, JA;
Assignee:
Kawaken Fine Chemicals Co., Ltd., Tokyo, JA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ; C07F / ;
U.S. Cl.
CPC ...
260299 ; 2603095 ; 424245 ; 424273 ;
Abstract
Allantoin compound with a metal salt of 2-pyrrolidone-5-carboxylic acid has a solubility which is from 2.5 to 4 times greater than that of pure allantoin. The compound has almost the same pharmacological effect as allantoin itself and is harmless, and therefore it can be used in medicines, cosmetics, creams, ointments, etc.