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:
Sep. 13, 2011
Filed:
Jul. 29, 2005
Applicants:
Ugo Pfeiffer, Milan, IT;
Morano Gatto, Parabiago, IT;
Mauro Tenconi, Gazzada, IT;
Laura Vigano, Parabiago, IT;
Andrea Balestrini, Sugar Land, TX (US);
Giuseppe LI Bassi, Gavirate, IT;
Inventors:
Ugo Pfeiffer, Milan, IT;
Morano Gatto, Parabiago, IT;
Mauro Tenconi, Gazzada, IT;
Laura Vigano, Parabiago, IT;
Andrea Balestrini, Sugar Land, TX (US);
Giuseppe Li Bassi, Gavirate, IT;
Assignee:
Lamberti SpA, Albizzate, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K 8/588 (2006.01); C09K 8/90 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to hydrophobically modified hydroxyalkyl guar derivatives which dissolve rapidly in water, having a hydroxyalkyl molar substitution between 0.2 and 2.5 and containing hydrophobic groups comprising C10-C32 alkyl chains, to the procedure for their preparation and to their use in the formulation of well fluids.