Patents by Inventor Roger Gras

Roger Gras 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).

  • Device for formation and deposition of monomolecular layers of amphiphilic molecules on a substrate
    Patent number: 4224896
    Abstract: The monomolecular layer is first formed from a solution of amphiphilic molecules by introduction of the solution on a liquid surface which is divided into at least two compartments by at least one rotatable and partly immersed horizontal member. The solvent is then removed and the horizontal member is driven in rotation so as to apply a predetermined pressure to said layer as this latter is transferred from one compartment to the next, the layer being finally deposited on a substrate.This a division of application Ser. No. 765,063, filed Feb. 2, 1977, now U.S. Pat. No. 4,093,757, issued June 6, 1978.
    Type: Grant
    Filed: February 2, 1978
    Date of Patent: September 30, 1980
    Assignee: Commissariat a l'Energie Atomique
    Inventors: Andre Barraud, Roger Gras, Michel Vandevyver
  • Method of forming and depositing monomolecular layers of amphiphilic molecules on a substrate
    Patent number: 4093757
    Abstract: The monomolecular layer is first formed from a solution of amphiphilic molecules by introduction of the solution on a liquid surface which is divided into at least two compartments by at least one rotatable and partly immersed horizontal member. The solvent is then removed and the horizontal member is driven in rotation so as to apply a predetermined pressure to said layer as this latter is transferred from one compartment to the next, the layer being finally deposited on a substrate.
    Type: Grant
    Filed: February 2, 1977
    Date of Patent: June 6, 1978
    Assignee: Commissariat a l'Energie Atomique
    Inventors: Andre Barraud, Roger Gras, Michel Vandevyver