Patents by Inventor Roy Saaro

Roy Saaro 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).

  • Thermistor intended primarily for temperature measurement
    Patent number: 5432375
    Abstract: The invention relates to a thermistor, primarily intended for temperature measurement. The thermistor comprises at least two thermistor plates (14-17) on a carrier (10), adjacent to each other and connected in series. The plates are separated from each other by a preferably elongated gap (18) and the upper surfaces of said plates are largely covered by upper electrode surfaces (24-26). The thermistor plates (14-17) are arranged within a limited area of the carrier (10) so that the maximum aggregate area of the thermistor plates (14-17) is constant, whereas the size of each individual thermistor surface is variable by displacement of the position of the gap(s) (18) within the said limited area of the carrier (10), for adjustment of the total resistance of the thermistor to different values. The invention also relates to a procedure for manufacturing a thermistor.
    Type: Grant
    Filed: July 1, 1991
    Date of Patent: July 11, 1995
    Assignee: Astra Tech Aktiebolag
    Inventors: Clas-Goran Agnvall, Ingvar Hansson, Per Hallje, Roy Saaro, Per Silverberg