Patents by Inventor Francois Sugnaux

Francois Sugnaux 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).

  • Patent number: 7547490
    Abstract: The invention concerns a process for producing a spinel compound of formula Li4Ti5O12, comprising a step of preparing a mixture of an organo-lithium compound selected from lithium alcoholates with an organo-titanium compound selected from titanic acid esters, in a liquid medium, and a step of hydrolyzing the mixture of said compounds. The invention also concerns a Li4Ti5O12 particulate material which may be produced according to the previous cited process and which has a BET surface area of at least 10 m2/g. The material is particularly useful in the manufacture of Lithium Ion batteries.
    Type: Grant
    Filed: July 29, 2002
    Date of Patent: June 16, 2009
    Assignee: Altairnano Inc.
    Inventors: Timothy Spitler, Jan Prochazka, Ladislav Kavan, Michael Graetzel, François Sugnaux
  • Publication number: 20040197657
    Abstract: The invention concerns a process for producing a spinel compound of formula Li4Ti5O12, comprising a step of preparing a mixture of an organo-lithium compound selected from lithium alcoholates with an organo-titanium compound selected from titanic acid esters, in a liquid medium, and a step of hydrolyzing the mixture of said compounds. The invention also concerns a Li4Ti5O12 particulate material which may be produced according to the previous cited process and which has a BET surface area of at least 10 m2/g. The material is particularly useful in the manufacture of Lithium Ion batteries.
    Type: Application
    Filed: January 29, 2004
    Publication date: October 7, 2004
    Inventors: Timothy Spitler, Jan Prochazka, Ladislav Kavan, Michael Graetzel, Francois Sugnaux
  • Publication number: 20040131934
    Abstract: A high kinetics rate electrochemical cell in which at least one of the electrodes is composed of a mesostructural electroactive material comprising nanoparticles forming a three-dimensional framework structure of mesoporous texture having a bicontinuous junction of large specific surface area with the electrolyte. A low temperature method of preparation of the electrodes employs a high-speed deposition of the electrically active material in the form of a thin film. The application of said electrodes in high power lithium ion insertion batteries, photovoltaic cells, supercapacitors and fast electrochromic devices is disclosed.
    Type: Application
    Filed: September 19, 2003
    Publication date: July 8, 2004
    Inventors: Francois Sugnaux, Michael Graetzel, Nicholas Pappas