Patents by Inventor Porte Hugues

Porte Hugues 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 for continuous liberation of active constituents into water
    Patent number: 5298248
    Abstract: An apparatus is provided for continuous and regular liberation of active constituents into domestic water supplies. The apparatus comprises a receptacle having a body portion which is impermeable to water and to the active constituent. The receptacle is provided with an aperture closed by a membrane which is permeable to water and to the active constituent. An operculum surrounds the membrane to secure the membrane to the receptacle. The active constituent is provided into the receptacle and is released through the membrane in a controlled manner over an extended period of time. Preferably, the membrane has a mean pore diameter greater than 0.05 microns.
    Type: Grant
    Filed: February 18, 1992
    Date of Patent: March 29, 1994
    Assignee: Rhone-Poulenc Sante
    Inventors: Porte Hugues, Torres Ghislaine