Patents by Inventor Michel Baufume

Michel Baufume 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).

  • Substrate for soil-free culture having a controlled water content over its thickness
    Patent number: 5009030
    Abstract: Substrates for soil-free culturing are formed from a felt of mineral fibres having a hydroretentivity gradient such that the hydroretentivity decreases in the direction of gravity. The hydroretentivity gradient may be brought about by a gradient in the fineness of the fibres such that the average diameter of the fibres increases in the direction of gravity or the density of the fibres.
    Type: Grant
    Filed: October 3, 1988
    Date of Patent: April 23, 1991
    Assignee: Isover Saint-Gobain
    Inventors: Bernard Kafka, Michel Baufume