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. 13, 2014
Filed:
Dec. 10, 2009
Applicants:
Cecilia Querci, Novara, IT;
Matteo Russo, Cerano, IT;
Riccardo Po′, Novara, IT;
Maria Anna Cardaci, Gerenzago, IT;
Inventors:
Cecilia Querci, Novara, IT;
Matteo Russo, Cerano, IT;
Riccardo Po′, Novara, IT;
Maria Anna Cardaci, Gerenzago, IT;
Assignee:
ENI S.p.A., Rome, IT;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F 236/20 (2006.01); C08F 220/60 (2006.01); C08F 226/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
Copolymers of acrylamide or methacrylamide, suitably modified with appropriate percentages of units deriving from comonomers of a hydrophobic nature and comonomers containing a positively charged ionic group, which are capable of effectively reducing the water permeability of a porous medium.