Patents by Inventor Raimo Antero Kujanpaa

Raimo Antero Kujanpaa 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).

  • Breathing mask with a display unit
    Patent number: 5764203
    Abstract: The invention relates to a breathing mask (1) having a display unit (5) comprising a display screen, the function of the unit being to display measurement data in the visual field of the mask wearer, the display screen being implemented by using a mechanical and/or electronic light modulator, the scales, symbols or other signs produced in the light modulator transmitting the measurement data to the wearer.
    Type: Grant
    Filed: August 19, 1996
    Date of Patent: June 9, 1998
    Assignee: Kemira Oy
    Inventors: Timo Erkki Holmlund, Raimo Antero Kujanpaa, Rauno Aulis Ollila