Patents by Inventor David M. Larson

David M. Larson 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).

  • Patent number: 11145921
    Abstract: This disclosure provides systems, methods, and apparatus related to a vapor phase photo-electrochemical cell. In one aspect, a device includes a photovoltaic cell, a cathode disposed on the photovoltaic cell, an ionomer membrane disposed on the cathode, and an anode disposed on the ionomer membrane. The cathode includes a cathode catalyst. The ionomer membrane is in contact with the cathode catalyst. The anode includes an anode catalyst. The anode catalyst is in contact with the ionomer membrane. The anode, the ionomer membrane, and the cathode are transmissive to the solar radiation spectrum.
    Type: Grant
    Filed: December 5, 2018
    Date of Patent: October 12, 2021
    Assignee: The Regents of the University of California
    Inventors: David M. Larson, Karl A. Walczak
  • Publication number: 20190181521
    Abstract: This disclosure provides systems, methods, and apparatus related to a vapor phase photo-electrochemical cell. In one aspect, a device includes a photovoltaic cell, a cathode disposed on the photovoltaic cell, an ionomer membrane disposed on the cathode, and an anode disposed on the ionomer membrane. The cathode includes a cathode catalyst. The ionomer membrane is in contact with the cathode catalyst. The anode includes an anode catalyst. The anode catalyst is in contact with the ionomer membrane. The anode, the ionomer membrane, and the cathode are transmissive to the solar radiation spectrum.
    Type: Application
    Filed: December 5, 2018
    Publication date: June 13, 2019
    Applicant: The Regents of the University of California
    Inventors: David M. Larson, Karl A. Walczak
  • Patent number: 6802770
    Abstract: An exhaust fan for use in bathrooms or similar areas has a generally rectangular fan housing formed from two independent structural members to reduce manufacturing waste and decrease production cost. The fan housing includes a receptacle panel that can be installed and removed from within the housing without additional tools. The fan housing includes two series of spaced view holes formed in its back wall such that during installation of the exhaust fan, the installer can view the ceiling joist to correctly position the fan housing relative to the bottom surface of the joist. The back wall of the fan housing also includes a pair of bend down tabs that can be placed in contact with the bottom surface of the joist to correctly position the bottom edge of the fan housing the required distance from the joist to accommodate the most common drywall thickness.
    Type: Grant
    Filed: December 3, 2002
    Date of Patent: October 12, 2004
    Assignee: Broan-Nutone LLC
    Inventors: David M. Larson, Robert G. Penlesky, Daniel L. Karst, Robert A. Chvosta, Alan G. Klug, Kevin P. Gahagan
  • Publication number: 20030134588
    Abstract: An exhaust fan for use in bathrooms or similar areas has a generally rectangular fan housing formed from two independent structural members to reduce manufacturing waste and decrease production cost. The fan housing includes a receptacle panel that can be installed and removed from within the housing without additional tools. The fan housing includes two series of spaced view holes formed in its back wall such that during installation of the exhaust fan, the installer can view the ceiling joist to correctly position the fan housing relative to the bottom surface of the joist. The back wall of the fan housing also includes a pair of bend down tabs that can be placed in contact with the bottom surface of the joist to correctly position the bottom edge of the fan housing the required distance from the joist to accommodate the most common drywall thickness.
    Type: Application
    Filed: December 3, 2002
    Publication date: July 17, 2003
    Applicant: Broan-Nutone LLC.
    Inventors: David M. Larson, Robert G. Penlesky, Daniel L. Karst, Robert A. Chvosta, Alan G. Klug, Kevin P. Gahagan
  • Patent number: 6488579
    Abstract: An exhaust fan for use in bathrooms or similar areas has a generally rectangular fan housing formed from two independent structural members to reduce manufacturing waste and decrease production cost. The fan housing includes a receptacle panel that can be installed and removed from within the housing without additional tools. The fan housing includes two series of spaced view holes formed in its back wall such that during installation of the exhaust fan, the installer can view the ceiling joist to correctly position the fan housing relative to the bottom surface of the joist. The back wall of the fan housing also includes a pair of bend down tabs that can be placed in contact with the bottom surface of the joist to correctly position the bottom edge of the fan housing the required distance from the joist to accommodate the most common drywall thickness.
    Type: Grant
    Filed: July 17, 2001
    Date of Patent: December 3, 2002
    Assignee: Broan-Nutone LLC
    Inventors: David M. Larson, Robert G. Penlesky, Daniel L. Karst, Robert A. Chvosta, Alan G. Klug, Kevin P. Gahagan
  • Publication number: 20010049260
    Abstract: An exhaust fan for use in bathrooms or similar areas has a generally rectangular fan housing formed from two independent structural members to reduce manufacturing waste and decrease production cost. The fan housing includes a receptacle panel that can be installed and removed from within the housing without additional tools. The fan housing includes two series of spaced view holes formed in its back wall such that during installation of the exhaust fan, the installer can view the ceiling joist to correctly position the fan housing relative to the bottom surface of the joist. The back wall of the fan housing also includes a pair of bend down tabs that can be placed in contact with the bottom surface of the joist to correctly position the bottom edge of the fan housing the required distance from the joist to accommodate the most common drywall thickness.
    Type: Application
    Filed: July 17, 2001
    Publication date: December 6, 2001
    Applicant: Broan-Nutone LLC
    Inventors: David M. Larson, Robert G. Penlesky, Daniel L. Karst, Robert A. Chvosta, Alan G. Klug, Kevin P. Gahagan
  • Patent number: 6261175
    Abstract: An exhaust fan for use in bathrooms or similar areas has a generally rectangular fan housing formed from two independent structural members to reduce manufacturing waste and decrease production cost. The fan housing includes a receptacle panel that can be installed and removed from within the housing without additional tools. The fan housing includes two series of spaced view holes formed in its back wall such that during installation of the exhaust fan, the installer can view the ceiling joist to correctly position the fan housing relative to the bottom surface of the joist. The back wall of the fan housing also includes a pair of bend down tabs that can be placed in contact with the bottom surface of the joist to correctly position the bottom edge of the fan housing the required distance from the joist to accommodate the most common drywall thickness.
    Type: Grant
    Filed: December 18, 1999
    Date of Patent: July 17, 2001
    Assignee: Broan-Nutone LLC
    Inventors: David M. Larson, Robert G. Penlesky, Daniel L. Karst, Robert A. Chvosta, Alan G. Klug, Kevin P. Gahagan
  • Patent number: D284132
    Type: Grant
    Filed: August 1, 1983
    Date of Patent: June 10, 1986
    Inventor: David M. Larson