Patents by Inventor Jeol Gaubicher

Jeol Gaubicher 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).

  • Publication number: 20090263724
    Abstract: The invention relates to a nanostructured material. The material is a nanostructured carbonaceous material composed of agglomerates of small needles of Li1+?V3O8 and of ?-LixV2O5 (0.1 ???0.25 and 0.03 ?×?0.667) surrounded by a noncontinuous layer of spherical carbon particles. It is obtained by a process consisting in preparing a carbonaceous precursor gel by bringing carbon, ?-V2O5 and a Li precursor into contact in amounts such that the ratio of the [V2O5]/[Li] concentrations is between 1.15 and 1.5 and that the (carbon)/(carbon+V2O5+Li precursor) ratio by weight is from 10 to 15 and in subjecting the gel to a heat treatment comprising a 1st stage at 80° C.-150° C. for 3-12 h and a 2nd stage between 300° C. and 350° C. for 10 min to 1 hour, under an nitrogen or argon atmosphere. Applications: positive electrode active material.
    Type: Application
    Filed: October 18, 2005
    Publication date: October 22, 2009
    Inventors: Dominique Guyomard, Jeol Gaubicher, Marc Deschamps, Matthieu Dubarry, Philippe Moreau