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. 03, 1977
Filed:
Nov. 25, 1975
Applicant:
Inventors:
Leo August Van Wijnsberghe, 'S-Gravenwezel, BE;
Raphael Karel Van Poucke, Berchem, BE;
Assignee:
AGFA-GEVAERT N.V., Mortsel, BE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
2603 / ;
Abstract
A method is described for preparing 4-monohalo-2-pyrazolin-5-ones wherein a tertiary organic phosphite is allowed to react with a 4,4-dihalo-2-pyrazolin-5-one and the 4-monohalopyrazole-5-enol phosphate ester formed is hydrolyzed.
Van Wijnsberghe, Leo. (1977). Preparation of 4-monohalo-2-pyrazolin-5-on-compounds (U.S. Patent No. 4021445). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4021445
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile