Patents by Inventor Arthur N. Curren

Arthur N. Curren 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).

  • Substrate with low secondary emissions
    Patent number: 6071595
    Abstract: The present invention is directed to a method and apparatus for producing a highly-textured surface on a copper substrate with only extremely small amounts of texture-inducing seeding or masking material. The texture-inducing seeding material is delivered to the copper substrate electrically switching the seeding material in and out of a circuit loop.
    Type: Grant
    Filed: January 24, 1996
    Date of Patent: June 6, 2000
    Assignee: The United States of America as represented by the National Aeronautics and Space Administration
    Inventors: Kenneth A. Jensen, Arthur N. Curren, Robert F. Roman
  • Method and apparatus for producing a substrate with low secondary electron emissions
    Patent number: 5711860
    Abstract: The present invention is directed to a method and apparatus for producing a highly-textured surface on a copper substrate with only extremely small amounts of texture-inducing seeding or masking material. The texture-inducing seeding material is delivered to the copper substrate electrically switching the seeding material in and out of a circuit loop.
    Type: Grant
    Filed: January 25, 1996
    Date of Patent: January 27, 1998
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: Kenneth A. Jensen, Arthur N. Curren, Robert F. Roman
  • Textured carbon surfaces on copper by sputtering
    Patent number: 4607193
    Abstract: A very thin layer of highly textured carbon is applied to a copper surface by a triode sputtering process. A carbon target 10 and a copper substrate 12 are simultaneously exposed to an argon plasma 14 in a vacuum chamber.The resulting carbon surface is characterized by a dense, random array of needle-like spires or peaks which extend perpendicularly from the copper surface. The coated copper is especially useful for electrode plates in multistage depressed collectors.
    Type: Grant
    Filed: October 10, 1984
    Date of Patent: August 19, 1986
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: Arthur N. Curren, Kenneth A. Jensen, Robert F. Roman
  • Ion sputter textured graphite electrode plates
    Patent number: 4417175
    Abstract: A specially textured surface of pyrolytic graphite exhibits extremely low yields of secondary electrons and reduced numbers of reflected primary electrons after impingement of high energy primary electrons. Electrode plates of this material are used in multistage depressed collectors.An ion flux having an energy between 500 eV and 1000 eV and a current density between 1.0 mA/cm.sup.2 and 6.0 mA/cm.sup.2 produces surface roughening or texturing which is in the form of needles or spires.Such textured surfaces are especially useful as anode collector plates in high efficiency electron tube devices.
    Type: Grant
    Filed: March 31, 1982
    Date of Patent: November 22, 1983
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: Arthur N. Curren, Ralph Forman, James S. Sovey, Edwin G. Wintucky
  • Ion sputter textured graphite
    Patent number: 4349424
    Abstract: A specially textured surface of pyrolytic graphite exhibits extremely low yields of secondary electrons and reduced numbers of reflected primary electrons after impingement of high energy primary electrons.An ion flux having an energy between 500 eV and 1000 eV and a current density between 1.0 mA/cm.sup.2 and 6.0 mA/cm.sup.2 produces surface roughening or texturing which is in the form of needles or spines.Such textured surfaces are especially useful as anode collector plates in high efficiency electron tube devices.
    Type: Grant
    Filed: May 15, 1981
    Date of Patent: September 14, 1982
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: James S. Sovey, Ralph Forman, Arthur N. Curren, Edwin G. Wintucky