Patents by Inventor Marco Brena

Marco Brena has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Fluorescent whitening agent aqueous solutions
    Patent number: 8940058
    Abstract: The present invention relates to a composition comprising a fluorescent whitening agent and a tertiary alkanolamine, a stable aqueous solution of such a composition and use of such composition for the bleaching of textile fibers or paper.
    Type: Grant
    Filed: July 27, 2012
    Date of Patent: January 27, 2015
    Assignee: 3V Sigma S.p.A.
    Inventors: Ferruccio Berte', Paolo Alioli, Marco Brena
  • Compositions of fluorescent whitening agents
    Patent number: 8864851
    Abstract: The present invention relates to whitening compositions, processes for obtaining such compositions, stable aqueous solutions of such compositions and the use of such compositions for whitening of textile fibers, paper and in detergency.
    Type: Grant
    Filed: October 25, 2012
    Date of Patent: October 21, 2014
    Assignee: 3V Sigma S.p.A.
    Inventors: Ferruccio Berte', Marco Brena, Massimo Fabbi, Francesco Maestri
  • COMPOSITIONS OF FLUORESCENT WHITENING AGENTS
    Publication number: 20140252262
    Abstract: The present invention relates to whitening compositions, processes for obtaining such compositions, stable aqueous solutions of such compositions and the use of such compositions for whitening of textile fibers, paper and in detergency.
    Type: Application
    Filed: October 25, 2012
    Publication date: September 11, 2014
    Inventors: Ferruccio Berte', Marco Brena, Massimo Fabbi, Francesco Maestri
  • FLUORESCENT WHITENING AGENT AQUEOUS SOLUTIONS
    Publication number: 20140203212
    Abstract: The present invention relates to a composition comprising a fluorescent whitening agent and a tertiary alkanolamine, a stable aqueous solution of such a composition and use of such composition for the bleaching of textile fibres or paper.
    Type: Application
    Filed: July 27, 2012
    Publication date: July 24, 2014
    Applicant: 3V Sigma S.p.A
    Inventors: Ferruccio Berte', Paolo Alioli, Marco Brena
  • Dispersions of salts of polymers or copolymers of acrylic acid and the use thereof as thickening agents
    Patent number: 5530045
    Abstract: A dispersion consisting of: from 10 to 50% by weight of alkali metal, or amine or ammonium salts of crosslinked acrylic acid polymers or copolymers as dispersed phase and from 50 to 90% by weight of a dispersing phase, characterized in that the dispersing phase consists of a polyether of general formula (I): ##STR1## wherein R is hydrogen, a C.sub.1 -C.sub.18 linear or branched alkyk group, aryl or aryl substituted with one or two C.sub.1 -C.sub.9 alkyl groups, R.sub.1, R.sub.2 and R.sub.3, which may be the same or different, are hydrogen or the methyl group, n, m, and p may take values ranging from 0 to 80 with the proviso that n+m+p is between 1 and 100.
    Type: Grant
    Filed: April 29, 1994
    Date of Patent: June 25, 1996
    Assignee: 3V Inc.
    Inventors: Marco Brena, Giuseppe Raspanti, Massimo Barzaghi
  • Polyquaternary compounds and the use thereof as dye fixers
    Patent number: 5395967
    Abstract: Polyquaternary compounds, a process for the preparation thereof and the use thereof as adjuvants to improve the washing fastness of cellulose fabrics or fibres dyed with direct or reactive dyes.
    Type: Grant
    Filed: June 7, 1993
    Date of Patent: March 7, 1995
    Assignee: 3V Inc.
    Inventors: Giuseppe Raspanti, Marco Brena