Patents by Inventor Roger Wappling

Roger Wappling 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).

  • GMR sensor with a varying number of GMR layers
    Patent number: 6373242
    Abstract: A position sensor for non-contact position measurement includes a sensor magnet and a sensor body. The sensor body is formed from a magneto-resistive material and is given a two or three dimensional geometrical shape to achieve a desired sensitivity function. The desired sensitivity function results from a variation in one or more of the sensor body dimensions. By forming the sensor body of magneto-resistive material into different geometrical shapes like a simple wedge, a double wedge, a circular tapered form or an arbitrary shape, a desired sensitivity function is obtained.
    Type: Grant
    Filed: September 7, 2000
    Date of Patent: April 16, 2002
    Assignee: Forskarpatent I Uppsala AB
    Inventor: Roger Wappling