Patents by Inventor Aleide Grein-Wiegand

Aleide Grein-Wiegand 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).

  • Process for the production of extendable thermographic plates
    Patent number: 4873113
    Abstract: A process for the production of extendable thermographic plates for matching the curvatures of the human body when thermography is carried out. In the process, a capsular ink formulation based on microencapsulated liquid crystals is applied by screen printing an elastomer plate of natural latex, the formulation being elastic and including, as a binder, a solution of polyvinyl alcohol modified by the addition of an inorganic cobalt salt which confers elasticity, and stability of the color-change temperatures of the liquid crystals.
    Type: Grant
    Filed: February 2, 1988
    Date of Patent: October 10, 1989
    Assignee: Varnel Chemical Business S.A.
    Inventor: Aleide Grein-Wiegand