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. 31, 1992
Filed:
Feb. 28, 1991
Applicant:
Inventors:
Artur Hunds, both of, DE;
Walte Rogler, both of, DE;
Assignee:
Huels Aktiengesellschaft, Marl, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
544320 ;
Abstract
The preparation of 2,4,5-triamino-6-hydroxypyrimidine by catalytic hydrogenation of 2,4-diamino-6-hydroxy-5-nitrosopyrimidine is carried out by performing the hydrogenation in the presence of noble metal catalysts without the addition of basic agents before and during the hydrogenation, and adding the base required for dissolution of the product and for separation of the solution of the product from the catalyst only after the completion of the hydrogenation.
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Hunds, Artur. (1992). Preparation of 2,4,5-triamino-6-hydroxypyrimidine by catalytic (U.S. Patent No. 5101031). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5101031
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile