Patents by Inventor Paul-Felix Gafner

Paul-Felix Gafner 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).

  • Application device for depositing a liquid substance locally on a surface to be treated
    Patent number: 5308343
    Abstract: This invention concerns a device for applying a medicated solution on the skin for dermatological treatment. This applicator (10) essentially comprises an elongated tubular component (11) with an internal cavity (12) in which is fitted a piston (18) secured to the end of a piston rod (21) integral with a micrometer screw mechanism (23). A chamber (27) made in the inner cavity (12) between the piston (18) and plug (13) is designed to contain the therapeutic solution which may be taken in or discharged through capillary conduits (14 and 17) of the plug (13) and an applicator end (16). This applicator makes it possible precisely to meter and deposit a predetermined volume of the treatment solution on the exact place to be treated.
    Type: Grant
    Filed: August 8, 1990
    Date of Patent: May 3, 1994
    Inventor: Paul-Felix Gafner