Patents by Inventor karl Johan Folke Hogberg

karl Johan Folke Hogberg 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 of illuminating an object and a device for carrying out the method
    Patent number: 4092705
    Abstract: An apparatus for illuminating an object including an arrangement of several reflectors which coact with a light screening body and a convex mirror to substantially absorb all the heat energy emitted by the light source while transmitting a maximum amount of visible light.
    Type: Grant
    Filed: July 29, 1975
    Date of Patent: May 30, 1978
    Assignee: Medical Products Octagon AB
    Inventor: karl Johan Folke Hogberg