Patents by Inventor John D. Ryerson

John D. Ryerson 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).

  • Solid state sensor
    Patent number: 4243631
    Abstract: A solid state sensor that is ideally well suited for detecting the presence of ozone in an atmosphere under ambient conditions. A metal oxide semiconductor is placed upon a glass substrate by heating the substrate to about 1200.degree. F. and then depositing molten granules of the metal oxide upon the heated substrate whereby the granules become fused to the substrate and each other to form a rough textured coating. The oxide coating is machined to a desired thickness using any one of many suitable machining operations.
    Type: Grant
    Filed: August 3, 1979
    Date of Patent: January 6, 1981
    Assignee: Energy for Independence, Inc.
    Inventor: John D. Ryerson
  • Sensing the presence of ozone
    Patent number: 4240799
    Abstract: A means for detecting and/or measuring the presence of ozone in an atmosphere such as air. A solid state sensor that is capable of changing its conductivity in the presence of ozone is located within a housing along with an ultraviolet lamp and a stream of the sampled atmosphere caused to pass over the sensor. After exposure to ozone in the atmosphere, the sensor is restored to its initial or start of sensing state by flooding it with ultraviolet radiation produced by the lamp.
    Type: Grant
    Filed: August 3, 1979
    Date of Patent: December 23, 1980
    Assignee: Energy for Independence, Inc.
    Inventor: John D. Ryerson