Patents by Inventor Stephane Fabrice Rouanet

Stephane Fabrice Rouanet 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).

  • Method of forming particles using a supercritical fluid
    Patent number: 5864923
    Abstract: A method for providing aerogels, and aerogels produced according to the method, is described. As one aspect, antiperspirant compounds that are in aerogel form, and antiperspirant and deodorant compositions including such salts, are described. The method involves contacting a solution containing material to be processed with a species selected to precipitate the material and selected so as to be miscible with the solvent system of the solution. After the material is precipitated, the material may be washed with the precipitating species until it is substantially free of solvent system. Then, the precipitating species containing the material precipitate is taken above its critical point, and the supercritical fluid is exhausted above its critical temperature. Alternately, a separate isolating species is introduced to displace the precipitating species, or the precipitating species/solvent system mixture. The isolating species then is taken above its critical point, and exhausted above its critical temperature.
    Type: Grant
    Filed: August 26, 1997
    Date of Patent: February 2, 1999
    Assignees: CF Technologies, Inc., The Gillette Company
    Inventors: Stephane Fabrice Rouanet, William Edward McGovern, Wanqing Cao, John M. Moses, Angel L. Carrillo, Irving M. Klotz
  • Method of forming particles using a supercritical fluid, aerogel particles formed thereby, and antiperspirants containing aerogel particles
    Patent number: 5725836
    Abstract: A method for providing aerogels, and aerogels produced according to the method, is described. As one aspect, antiperspirant compounds that are in aerogel form, and antiperspirant and deodorant compositions including such salts, are described. The method involves contacting a solution containing material to be processed with a species selected to precipitate the material and selected so as to be miscible with the solvent system of the solution. After the material is precipitated, the material may be washed with the precipitating species until it is substantially free of solvent system. Then, the precipitating species containing the material precipitate is taken above its critical point, and the supercritical fluid is exhausted above its critical temperature. Alternately, a separate isolating species is introduced to displace the precipitating species, or the precipitating species/solvent system mixture. The isolating species then is taken above its critical point, and exhausted above its critical temperature.
    Type: Grant
    Filed: June 1, 1995
    Date of Patent: March 10, 1998
    Assignees: CF Technologies, Inc., The Gillette Company
    Inventors: Stephane Fabrice Rouanet, William Edward McGovern, Wanging Cao, John M. Moses, Angel L. Carrillo, Irving M. Klotz