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).
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Patent number: 11145921Abstract: 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: GrantFiled: December 5, 2018Date of Patent: October 12, 2021Assignee: The Regents of the University of CaliforniaInventors: David M. Larson, Karl A. Walczak
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Publication number: 20190181521Abstract: 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: ApplicationFiled: December 5, 2018Publication date: June 13, 2019Applicant: The Regents of the University of CaliforniaInventors: David M. Larson, Karl A. Walczak
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Patent number: 6802770Abstract: 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: GrantFiled: December 3, 2002Date of Patent: October 12, 2004Assignee: Broan-Nutone LLCInventors: David M. Larson, Robert G. Penlesky, Daniel L. Karst, Robert A. Chvosta, Alan G. Klug, Kevin P. Gahagan
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Publication number: 20030134588Abstract: 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: ApplicationFiled: December 3, 2002Publication date: July 17, 2003Applicant: Broan-Nutone LLC.Inventors: David M. Larson, Robert G. Penlesky, Daniel L. Karst, Robert A. Chvosta, Alan G. Klug, Kevin P. Gahagan
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Patent number: 6488579Abstract: 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: GrantFiled: July 17, 2001Date of Patent: December 3, 2002Assignee: Broan-Nutone LLCInventors: David M. Larson, Robert G. Penlesky, Daniel L. Karst, Robert A. Chvosta, Alan G. Klug, Kevin P. Gahagan
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Publication number: 20010049260Abstract: 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: ApplicationFiled: July 17, 2001Publication date: December 6, 2001Applicant: Broan-Nutone LLCInventors: David M. Larson, Robert G. Penlesky, Daniel L. Karst, Robert A. Chvosta, Alan G. Klug, Kevin P. Gahagan
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Patent number: 6261175Abstract: 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: GrantFiled: December 18, 1999Date of Patent: July 17, 2001Assignee: Broan-Nutone LLCInventors: David M. Larson, Robert G. Penlesky, Daniel L. Karst, Robert A. Chvosta, Alan G. Klug, Kevin P. Gahagan
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Patent number: D284132Type: GrantFiled: August 1, 1983Date of Patent: June 10, 1986Inventor: David M. Larson