Patents by Inventor John Aaron Olmstead

John Aaron Olmstead 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 forming a curved implanted region in a semiconductor body
    Patent number: 4113516
    Abstract: A method is disclosed whereby a region having a varying conductivity profile and depth is formed in a body of semiconductor material. The method includes the step of implanting conductivity modifiers beneath a curved surface of the body. Such a region, fabricated by the present method, is particularly useful as one element of a semi-conductor device.
    Type: Grant
    Filed: January 28, 1977
    Date of Patent: September 12, 1978
    Assignee: RCA Corporation
    Inventors: Samuel Ponczak, John Aaron Olmstead
  • Fluid flow measuring system
    Patent number: 3942378
    Abstract: A fluid flow measuring system utilizing semiconductor devices as heating and temperature sensitive elements produces an electrical output signal which is linearly proportional to the rate of flow of a fluid and which automatically compensates for changes in fluid density.
    Type: Grant
    Filed: June 28, 1974
    Date of Patent: March 9, 1976
    Assignee: RCA Corporation
    Inventor: John Aaron Olmstead
  • Integrated power transistor with ballasting resistance and breakdown protection
    Patent number: 3936863
    Abstract: An integrated power transistor has at least one emitter region, having a ballasting resistance to reduce the possibility of second breakdown. Also integrated within the device is a voltage control diode, located between the collector terminal and the emitter terminal, to protect against high voltages caused by transient surges, particularly during switching times.
    Type: Grant
    Filed: September 9, 1974
    Date of Patent: February 3, 1976
    Assignee: RCA Corporation
    Inventor: John Aaron Olmstead
  • Improved fluid flow sensor configuration
    Patent number: 3931736
    Abstract: An improved fluid flow sensor configuration comprises a thin membrane of a low thermally conductive material having one surface in thermal contact with the heating and temperature sensitive elements of a fluid flow sensor and the other surface in thermal contact with a fluid whose flow rate is measured by the fluid flow sensor.
    Type: Grant
    Filed: June 28, 1974
    Date of Patent: January 13, 1976
    Assignee: RCA Corporation
    Inventor: John Aaron Olmstead