Patents by Inventor John P. Cumings

John P. Cumings 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).

  • Telescoped multiwall nanotube and manufacture thereof
    Patent number: 7238425
    Abstract: The invention relates to a method for forming a telescoped multiwall nanotube. Such a telescoped multiwall nanotube may find use as a linear or rotational bearing in microelectromechanical systems or may find use as a constant force nanospring. In the method of the invention, a multiwall nanotube is affixed to a solid, conducting substrate at one end. The tip of the free end of the multiwall nanotube is then removed, revealing the intact end of the inner wall. A nanomanipulator is then attached to the intact end, and the intact, core segments of the multiwall nanotube are partially extracted, thereby telescoping out a segment of nanotube.
    Type: Grant
    Filed: March 14, 2005
    Date of Patent: July 3, 2007
    Assignee: The Regents of the University of California
    Inventors: John P. Cumings, Alex K. Zettl, Steven G. Louie, Marvin L. Cohen
  • Telescoped multiwall nanotube and manufacture thereof
    Patent number: 6874668
    Abstract: The invention relates to a method for forming a telescoped multiwall nanotube. Such a telescoped multiwall nanotube may find use as a linear or rotational bearing in microelectromechanical systems or may find use as a constant force nanospring. In the method of the invention, a multiwall nanotube is affixed to a solid, conducting substrate at one end. The tip of the free end of the multiwall nanotube is then removed, revealing the intact end of the inner wall. A nanomanipulator is then attached to the intact end, and the intact, core segments of the multiwall nanotube are partially extracted, thereby telescoping out a segment of nanotube.
    Type: Grant
    Filed: July 24, 2001
    Date of Patent: April 5, 2005
    Assignee: The Regents of the University of California
    Inventors: John P. Cumings, Alex K. Zettl, Steven G. Louie, Marvin L. Cohen
  • Method for shaping a nanotube and a nanotube shaped thereby
    Publication number: 20040110003
    Abstract: The invention relates to a method for shaping small three-dimensional articles such as nanotube exhibiting a layered structure through material removal such that the article is controllably shaped to exhibit a desired contour. Typically, material removal does not require use of a chemical etchant and is carried out while the article and a shaping electrode are positioned in contact material removal relationship with under a potential difference. The invention also relates to nanotubes and small three-dimensional articles exhibiting a layered structure having a controllably shaped contour.
    Type: Application
    Filed: November 18, 2003
    Publication date: June 10, 2004
    Inventors: John P. Cumings, Alex K. Zettl
  • Method for shaping a nanotube and a nanotube shaped thereby
    Patent number: 6709566
    Abstract: The invention relates to a method for shaping small three-dimensional articles such as nanotube exhibiting a layered structure through material removal such that the article is controllably shaped to exhibit a desired contour. Typically, material removal does not require use of a chemical etchant and is carried out while the article and a shaping electrode are positioned in contact material removal relationship with under a potential difference. The invention also relates to nanotubes and small three-dimensional articles exhibiting a layered structure having a controllably shaped contour.
    Type: Grant
    Filed: July 24, 2001
    Date of Patent: March 23, 2004
    Assignee: The Regents of the University of California
    Inventors: John P. Cumings, Alex K. Zettl
  • Telescoped multiwall nanotube and manufacture thereof
    Publication number: 20020070426
    Abstract: The invention relates to a method for forming a telescoped multiwall nanotube. Such a telescoped multiwall nanotube may find use as a linear or rotational bearing in microelectromechanical systems or may find use as a constant force nanospring. In the method of the invention, a multiwall nanotube is affixed to a solid, conducting substrate at one end. The tip of the free end of the multiwall nanotube is then removed, revealing the intact end of the inner wall. A nanomanipulator is then attached to the intact end, and the intact, core segments of the multiwall nanotube are partially extracted, thereby telescoping out a segment of nanotube.
    Type: Application
    Filed: July 24, 2001
    Publication date: June 13, 2002
    Inventors: John P. Cumings, Alex K. Zettl, Steven G. Louie, Marvin L. Cohen
  • Method for shaping a nanotube and a nanotube shaped thereby
    Publication number: 20020053522
    Abstract: The invention relates to a method for shaping small three-dimensional articles such as nanotube exhibiting a layered structure through material removal such that the article is controllably shaped to exhibit a desired contour. Typically, material removal does not require use of a chemical etchant and is carried out while the article and a shaping electrode are positioned in contact material removal relationship with under a potential difference. The invention also relates to nanotubes and small three-dimensional articles exhibiting a layered structure having a controllably shaped contour.
    Type: Application
    Filed: July 24, 2001
    Publication date: May 9, 2002
    Inventors: John P. Cumings, Alex K. Zettl