Patents by Inventor Maria Anna Cardaci

Maria Anna Cardaci 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).

  • Relative permeability modifiers based on hydrophobically modified cationic copolymers
    Patent number: 8722824
    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.
    Type: Grant
    Filed: December 10, 2009
    Date of Patent: May 13, 2014
    Assignee: ENI S.p.A.
    Inventors: Cecilia Querci, Matteo Russo, Riccardo Po′, Maria Anna Cardaci
  • RELATIVE PERMEABILITY MODIFIERS BASED ON HYDROPHOBICALLY MODIFIED CATIONIC COPOLYMERS
    Publication number: 20120130037
    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.
    Type: Application
    Filed: December 10, 2009
    Publication date: May 24, 2012
    Applicant: ENI S.p.A.
    Inventors: Cecilia Querci, Matteo Russo, Riccardo Po', Maria Anna Cardaci
  • Organic initiators and their use in the polymerization of unsaturated monomers
    Patent number: 6576730
    Abstract: Process for the polymerization of unsaturated vinyl and/or vinylidene monomers which comprises reacting one or more monomers in the presence of heterocyclic initiators having a nitrogen atom bound to an oxygen atom at a temperature ranging from 100 to 130° C.
    Type: Grant
    Filed: May 11, 2001
    Date of Patent: June 10, 2003
    Assignee: Enichem S.p.A.
    Inventors: Nicoletta Cardi, Riccardo Po', Giuliana Schimperna, Maria Caldararo, Maria Anna Cardaci, Fabio Garbassi
  • Organic initiators and their use in the polymerization of unsaturated monomers
    Publication number: 20020022724
    Abstract: Process for the polymerization of unsaturated vinyl and/or vinylidene monomers which comprises reacting one or more monomers in the presence of heterocyclic initiators having a nitrogen atom bound to an oxygen atom at a temperature ranging from 100 to 130° C.
    Type: Application
    Filed: May 11, 2001
    Publication date: February 21, 2002
    Applicant: ENICHEM S.p.A.
    Inventors: Nicoletta Cardi, Riccardo Po', Giuliana Schimperna, Maria Caldararo, Maria Anna Cardaci, Fabio Garbassi