Patents by Inventor Russell Lawrence MacAdam

Russell Lawrence MacAdam 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).

  • Apparatus and methods for making capacitive measurements of cathode fall in fluorescent lamps
    Patent number: 7368916
    Abstract: Apparatus and methods for measuring cathode fall in fluorescent lamps are disclosed. Together with measurements of cathode temperature, such measurements of cathode fall may inform a determination of cathode heater voltage as a function of discharge current (i.e., a cathode-heating-profile) that avoids both sputtering and excess-evaporation.
    Type: Grant
    Filed: January 19, 2006
    Date of Patent: May 6, 2008
    Assignee: Lutron Electronics Co., Inc.
    Inventors: John Francis Waymouth, Robert Thomas Nachtrieb, Farheen Khan, Mark Alan Hartfield, Mark Stephen Taipale, Renzo Corrado DeMeo, Russell Lawrence MacAdam
  • Apparatus and methods for making spectroscopic measurements of cathode fall in fluorescent lamps
    Patent number: 7339322
    Abstract: Apparatus and methods are disclosed for measuring cathode fall within a fluorescent lamp that contains an electrode and a gas. A level of cathode fall associated with the electrode may be identified based on an intensity and wavelength of radiation emitted by the gas.
    Type: Grant
    Filed: August 21, 2006
    Date of Patent: March 4, 2008
    Assignee: Lutron Electronics Co., Inc.
    Inventors: John Francis Waymouth, Robert Thomas Nachtrieb, Farheen Khan, Mark Alan Hartfield, Mark Stephen Taipale, Renzo Corrado DeMeo, Russell Lawrence MacAdam
  • Apparatus and methods for making spectroscopic measurements of cathode fall in fluorescent lamps
    Patent number: 7323877
    Abstract: Apparatus and methods are disclosed for measuring cathode fall within a fluorescent lamp that contains an electrode and a gas. A level of cathode fall associated with the electrode may be identified based on an intensity and wavelength of radiation emitted by the gas.
    Type: Grant
    Filed: August 21, 2006
    Date of Patent: January 29, 2008
    Assignee: Lutron Electronics Co., Inc.
    Inventors: John Francis Waymouth, Robert Thomas Nachtrieb, Farheen Khan, Mark Alan Hartfield, Mark Stephen Taipale, Renzo Corrado DeMeo, Russell Lawrence MacAdam
  • Apparatus and methods for making capacitive measurements of cathode fall in fluorescent lamps
    Patent number: 7259519
    Abstract: Apparatus and methods for measuring cathode fall in fluorescent lamps are disclosed. Together with measurements of cathode temperature, such measurements of cathode fall may inform a determination of cathode heater voltage as a function of discharge current (i.e., a cathode-heating-profile) that avoids both sputtering and excess-evaporation.
    Type: Grant
    Filed: August 11, 2005
    Date of Patent: August 21, 2007
    Assignee: Lutron Electronics Co., Inc.
    Inventors: John Francis Waymouth, Robert Thomas Nachtrieb, Farheen Khan, Mark Alan Hartfield, Mark Stephen Taipale, Renzo Corrado DeMeo, Russell Lawrence MacAdam
  • Apparatus and methods for making capacitive measurements of cathode fall in fluorescent lamps
    Patent number: 7224124
    Abstract: Apparatus and methods for measuring cathode fall in fluorescent lamps are disclosed. Together with measurements of cathode temperature, such measurements of cathode fall may inform a determination of cathode heater voltage as a function of discharge current (i.e., a cathode-heating-profile) that avoids both sputtering and excess-evaporation.
    Type: Grant
    Filed: January 19, 2006
    Date of Patent: May 29, 2007
    Assignee: Lutron Electronics Co., Inc.
    Inventors: John Francis Waymouth, Robert Thomas Nachtrieb, Farheen Khan, Mark Alan Hartfield, Mark Stephen Taipale, Renzo Corrado DeMeo, Russell Lawrence MacAdam
  • Apparatus and methods for making capacitive measurements of cathode fall in fluorescent lamps
    Patent number: 7196476
    Abstract: Apparatus and methods for measuring cathode fall in fluorescent lamps are disclosed. Together with measurements of cathode temperature, such measurements of cathode fall may inform a determination of cathode heater voltage as a function of discharge current (i.e., a cathode-heating-profile) that avoids both sputtering and excess-evaporation.
    Type: Grant
    Filed: January 19, 2006
    Date of Patent: March 27, 2007
    Assignee: Lutron Electronics Co., Inc.
    Inventors: John Francis Waymouth, Robert Thomas Nachtrieb, Farheen Khan, Mark Alan Hartfield, Mark Stephen Taipale, Renzo Corrado DeMeo, Russell Lawrence MacAdam
  • Apparatus and methods for making spectroscopic measurements of cathode fall in fluorescent lamps
    Patent number: 7116055
    Abstract: Apparatus and methods are disclosed for measuring cathode fall within a fluorescent lamp that contains an electrode and a gas. A level of cathode fall associated with the electrode may be identified based on an intensity and wavelength of radiation emitted by the gas.
    Type: Grant
    Filed: April 6, 2004
    Date of Patent: October 3, 2006
    Assignee: Lutron Electronics Co., Inc.
    Inventors: John Francis Waymouth, Robert Thomas Nachtrieb, Farheen Khan, Mark Alan Hartfield, Mark Stephen Taipale, Renzo Corrado DeMeo, Russell Lawrence MacAdam
  • Apparatus and methods for making capacitive measurements of cathode fall in fluorescent lamps
    Patent number: 7002301
    Abstract: Apparatus and methods for measuring cathode fall in fluorescent lamps are disclosed. Together with measurements of cathode temperature, such measurements of cathode fall may inform a determination of cathode heater voltage as a function of discharge current (i.e., a cathode-heating-profile) that avoids both sputtering and excess-evaporation.
    Type: Grant
    Filed: April 6, 2004
    Date of Patent: February 21, 2006
    Assignee: Lutron Electronics Co., Inc.
    Inventors: John Francis Waymouth, Robert Thomas Nachtrieb, Farheen Khan, Mark Alan Hartfield, Mark Stephen Taipale, Renzo Corrado DeMeo, Russell Lawrence MacAdam