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, 1988
Filed:
May. 06, 1986
Applicant:
Inventors:
Albertha M Paul, Holliston, MA (US);
Harold H Freedman, Newton Center, MA (US);
Assignee:
The Dow Chemical Company, Midland, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
562450 ; 564 48 ; 544386 ; 544168 ;
Abstract
The specification discloses reacting a water soluble amino compound with a highly water reactive isocyanate by dissolving the isocyanate in a solvent, such as ethyl acetate, which is water insoluble to slightly water soluble and which has a degree of electrophilicity so as to attract the amino constituent of the amino compound. The two solutions are rapidly mixed together, affording superior yields of product.
Paul, Albertha. (1988). Preparation of hydrantoic acids and hydantoins (U.S. Patent No. 4746755). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4746755
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile