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. 25, 2004
Filed:
Jul. 03, 2002
Applicant:
Inventors:
Antonio Zappala', Rome, IT;
Andrea Gorassini, Udine, IT;
Angelo Guimanini, late of Udine, IT;
Giancarlo Verardo, Pordenone, IT;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ; C07C / ; C07D / ; D21H 2/518 ;
U.S. Cl.
CPC ...
C07C / ; C07C / ; C07C / ; C07D / ; D21H 2/518 ;
Abstract
Novel diazo derivatives useful for the deacidification of paper material and the process for their preparation comprising three steps starting from an amine and ethyl chlorocarbonate, are described.