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:
Mar. 09, 2021
Filed:
Dec. 06, 2016
Applicant:
Mapei S.p.a., Milan, IT;
Inventors:
Massimo Stefanoni, Milan, IT;
Carlo Pistolesi, Milan, IT;
Marco Squinzi, Milan, IT;
Enrico Dal Negro, Milan, IT;
Cristiano Maltese, Milan, IT;
Daniele Peila, Turin, IT;
Assignee:
MAPEI S.P.A., Milan, IT;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C09K 17/32 (2006.01); E21D 9/06 (2006.01);
U.S. Cl.
CPC ...
C09K 17/32 (2013.01); E21D 9/0685 (2016.01);
Abstract
Disclosed is a liquid foaming additive for use in mechanised excavation by a tunnel boring machine, containing 5-40% by weight of one or more surfactants, 0.01-5% by weight of one or more biopolymers, and 55-94.99% by weight of water.