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:
Apr. 26, 2005
Filed:
Jun. 08, 2000
Applicants:
Jean-michel Bossoutrot, Chaponost, FR;
Paul Bourdauducq, Chaponost, FR;
Inventors:
Jean-Michel Bossoutrot, Chaponost, FR;
Paul Bourdauducq, Chaponost, FR;
Assignee:
Atofina, Puteaux, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C277/02 ;
U.S. Cl.
CPC ...
Abstract
The invention concerns a method for making aminoguanidine bicarbonate from an aqueous solution of cyanamide and an aqueous solution of hydrazine in the presence of CO. The invention is characterised in that it consists in proceeding with an amount of cyamide slightly higher than the stoichiometric quantity. The invention also concerns quasi-spherical agglomerates of aminoguanidine bicarbonate crystals.