Patents by Inventor David H. Powell

David H. Powell 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 and apparatus for detecting and monitoring peptides, and peptides identified therewith
    Publication number: 20040014143
    Abstract: The present invention concerns an apparatus and method for the rapid separation, detection, and characterization of molecules, such as biomolecules, within a sample. The present invention is particularly useful for the separation, detection, and characterization of peptides, such as neuropeptides, within a biological sample. The present invention also concerns neuropeptides identified using the apparatus and method of the subject invention.
    Type: Application
    Filed: May 29, 2003
    Publication date: January 22, 2004
    Inventors: William E. Haskins, Robert T. Kennedy, David H. Powell, Christopher J. Watson
  • Operating turbine resonant blade monitor
    Patent number: 5152172
    Abstract: An operating turbine monitor is described incorporating one or more acoustic sensors positioned next to a blade row of a rotor, an analog digital converter, a tachometer sensor at the rotor shaft, a memory, a synchronous averaging circuit, a subtractor circuit, and a comparator. The invention overcomes the problem of monitoring an operating turbine of order-related turbine blade vibration and for non order-related turbine blade vibration as well as for other turbine conditions.
    Type: Grant
    Filed: July 24, 1990
    Date of Patent: October 6, 1992
    Assignee: Electric Power Research Institute
    Inventors: Robert L. Leon, David H. Powell
  • Operating turbine resonant blade monitor
    Patent number: 4996880
    Abstract: An operating turbine monitor is described incorporating one or more acoustic sensors positioned next to a blade row of a rotor, an analog digital converter, a tachometer sensor at the rotor shaft, a memory, a synchronous averaging circuit, a subtractor circuit, and a comparator. The invention overcomes the problem of monitoring an operating tubine for order-related turbine blade vibration and for non order-related turbine blade vibration as well as for other turbine conditions.
    Type: Grant
    Filed: March 23, 1989
    Date of Patent: March 5, 1991
    Assignee: Electric Power Research Institute, Inc.
    Inventors: Robert L. Leon, David H. Powell
  • Charger stand for a portable handset telephone and its spare battery pack
    Patent number: D319061
    Type: Grant
    Filed: January 23, 1990
    Date of Patent: August 13, 1991
    Assignee: Technophone Limited
    Inventors: David H. Powell, Richard Seymour
  • Portable handset telephone
    Patent number: D321183
    Type: Grant
    Filed: January 23, 1990
    Date of Patent: October 29, 1991
    Assignee: Technophone Limited
    Inventors: David H. Powell, Richard Seymour
  • Portable computer
    Patent number: D362236
    Type: Grant
    Filed: March 3, 1994
    Date of Patent: September 12, 1995
    Assignee: Sun Microsystems, Inc.
    Inventors: Michael S. Dann, Philip G. Yurkonis, Craig M. Leverault, Paul S. Montgomery, Herbert H. F. Pfeifer, Richard W. Seymour, David H. Powell
  • Wrist watch
    Patent number: D365524
    Type: Grant
    Filed: March 8, 1995
    Date of Patent: December 26, 1995
    Assignee: Casio Computer Co., Ltd.
    Inventors: Shigeru Hanagata, Richard W. Seymour, David H. Powell
  • Wrist watch
    Patent number: D365525
    Type: Grant
    Filed: March 8, 1995
    Date of Patent: December 26, 1995
    Assignee: Casio Computer Co., Ltd.
    Inventors: Shingo Ishizaka, Richard W. Seymour, David H. Powell
  • Wrist watch
    Patent number: D371307
    Type: Grant
    Filed: March 8, 1995
    Date of Patent: July 2, 1996
    Assignee: Casio Computer Co., Ltd.
    Inventors: Akemi Tomita, Richard W. Seymour, David H. Powell
  • Wrist watch
    Patent number: D378198
    Type: Grant
    Filed: October 13, 1995
    Date of Patent: February 25, 1997
    Assignee: Casio Computer Co., Ltd.
    Inventors: Akemi Tomita, Richard W. Seymour, David H. Powell
  • Wrist watch
    Patent number: D378740
    Type: Grant
    Filed: October 13, 1995
    Date of Patent: April 8, 1997
    Assignee: Casio Computer Co., Ltd.
    Inventors: Hideyuki Yamamoto, Richard W. Seymour, David H. Powell
  • Combined handshower, soap dish and support assembly
    Patent number: D385333
    Type: Grant
    Filed: July 15, 1996
    Date of Patent: October 21, 1997
    Assignee: Aqualisa Products Limited
    Inventors: Adrian Barclay Caroen, David H. Powell
  • Shower head
    Patent number: D385334
    Type: Grant
    Filed: July 15, 1996
    Date of Patent: October 21, 1997
    Assignee: Aqualisa Products Limited
    Inventors: Adrian Barclay Caroen, David H. Powell
  • Shower head
    Patent number: D385335
    Type: Grant
    Filed: July 15, 1996
    Date of Patent: October 21, 1997
    Assignee: Aqualisa Products Limited
    Inventors: Adrian Barclay Caroen, David H. Powell
  • Shower head
    Patent number: D386244
    Type: Grant
    Filed: July 15, 1996
    Date of Patent: November 11, 1997
    Assignee: Aqualisa Products Limited
    Inventors: Adrian Barclay Caroen, David H. Powell
  • Shower head
    Patent number: D394899
    Type: Grant
    Filed: July 15, 1996
    Date of Patent: June 2, 1998
    Assignee: Aqualisa Products Limited
    Inventors: Adrian Barclay Caroen, David H. Powell
  • Camera
    Patent number: D398320
    Type: Grant
    Filed: December 6, 1996
    Date of Patent: September 15, 1998
    Assignee: Minolta Co., Ltd.
    Inventor: David H. Powell
  • Camera
    Patent number: D404050
    Type: Grant
    Filed: December 6, 1996
    Date of Patent: January 12, 1999
    Assignee: Minolta Co., Ltd.
    Inventor: David H. Powell
  • Valve
    Patent number: D406638
    Type: Grant
    Filed: November 7, 1997
    Date of Patent: March 9, 1999
    Assignee: Aqualisa Products Limited
    Inventors: David H. Powell, Adrian Barclay Caroen
  • Valve
    Patent number: D406879
    Type: Grant
    Filed: November 7, 1997
    Date of Patent: March 16, 1999
    Assignee: Aqualisa Products Limited
    Inventors: David H. Powell, Adrian Barclay Caroen