Patents by Inventor Marc D. DeJohn

Marc D. DeJohn 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: 10309646
    Abstract: A portable catalytic combustion heater, wherein fuel vapor (11) and air (10) are supplied to a catalyst (6) which promotes the flameless combustion of fuel and releases that. The fuel is supplied as a liquid, passes through a selectively permeable membrane (8) such that fuel vapor exits the membrane and is fed to the catalyst (6). Additional features include porous supports and means of enhancing and diminishing the catalytic rate of combustion and controlling the heat output.
    Type: Grant
    Filed: September 19, 2016
    Date of Patent: June 4, 2019
    Assignee: GHT GLOBAL HEATING TECHNOLOGIES AG
    Inventors: Robert G. Hockaday, Patrick S. Turner, Zachary R. Bradford, Marc D. DeJohn, Carlos J. Navas, Heathcliff L. Vaz
  • Publication number: 20170003020
    Abstract: A portable catalytic combustion heater, wherein fuel vapor (11) and air (10) are supplied to a catalyst (6) which promotes the flameless combustion of fuel and releases that. The fuel is supplied as a liquid, passes through a selectively permeable membrane (8) such that fuel vapor exits the membrane and is fed to the catalyst (6). Additional features include porous supports and means of enhancing and diminishing the catalytic rate of combustion and controlling the heat output.
    Type: Application
    Filed: September 19, 2016
    Publication date: January 5, 2017
    Inventors: Robert G. Hockaday, Patrick S. Turner, Zachary R. Bradford, Marc D. DeJohn, Carlos J. Navas, Heathcliff L. Vaz
  • Patent number: 9447964
    Abstract: A portable catalytic combustion heater, wherein fuel vapor (11) and air (10) are supplied to a catalyst (6) which promotes the flameless combustion of fuel and releases that. The fuel is supplied as a liquid, passes through a selectively permeable membrane (8) such that fuel vapor exits the membrane and is fed to the catalyst (6). Additional features include porous supports and means of enhancing and diminishing the catalytic rate of combustion and controlling the heat output.
    Type: Grant
    Filed: November 18, 2013
    Date of Patent: September 20, 2016
    Assignee: GLOBAL HEATING TECHNOLOGIES, GMBH
    Inventors: Robert G. Hockaday, Patrick S. Turner, Zachary R. Bradford, Marc D. DeJohn, Carlos J. Navas, Heathcliff L. Vaz
  • Publication number: 20140199644
    Abstract: A portable catalytic combustion heater, wherein fuel vapor (11) and air (10) are supplied to a catalyst (6) which promotes the flameless combustion of fuel and releases that. The fuel is supplied as a liquid, passes through a selectively permeable membrane (8) such that fuel vapor exits the membrane and is fed to the catalyst (6). Additional features include porous supports and means of enhancing and diminishing the catalytic rate of combustion and controlling the heat output.
    Type: Application
    Filed: November 18, 2013
    Publication date: July 17, 2014
    Applicant: GLOBAL HEATING TECHNOLOGIES, GMBH
    Inventors: Robert G. Hockaday, Patrick S. Turner, Zachary R. Bradford, Marc D. DeJohn, Carlos J. Navas, Heathcliff L. Vaz
  • Patent number: 8585396
    Abstract: A portable catalytic combustion heater, wherein fuel vapor (11) and air (10) are supplied to a catalyst (6) which promotes the flameless combustion of fuel and releases that. The fuel is supplied as a liquid, passes through a selectively permeable membrane (8) such as fuel vapor exits the membrane and is fed to the catalyst (6). Additional features include porous supports and means of enhancing and diminishing the catalytic rate of combustion and controlling the heat output.
    Type: Grant
    Filed: March 19, 2010
    Date of Patent: November 19, 2013
    Assignee: GHT Global Heating Technologies, GmbH
    Inventors: Robert G. Hockaday, Patrick S. Turner, Zachary R. Bradford, Marc D. DeJohn, Carlos J. Navas, Heathcliff L. Vaz
  • Publication number: 20100227286
    Abstract: A portable catalytic combustion heater, wherein fuel vapor (11) and air (10) are supplied to a catalyst (6) which promotes the flameless combustion of fuel and releases that. The fuel is supplied as a liquid, passes through a selectively permeable membrane (8) such as fuel vapor exits the membrane and is fed to the catalyst (6). Additional features include porous supports and means of enhancing and diminishing the catalytic rate of combustion and controlling the heat output.
    Type: Application
    Filed: March 19, 2010
    Publication date: September 9, 2010
    Inventors: Robert G. Hockaday, Patrick S. Turner, Zachary R. Bradford, Marc D. DeJohn, Carlos J. Navas, Heathcliff L. Vaz
  • Patent number: 7708553
    Abstract: This invention discloses a portable catalytic combustion heater. Fuel vapor and air are supplied to a catalyst which promotes the flameless combustion of the fuel, releasing heat. The fuel is supplied as a liquid, passes through a selectively permeable membrane such that fuel vapor exits the membrane and is fed to the catalyst. Additional features such as porous supports and means of enhancing and diminishing the catalytic rate of combustion and controlling the heat output are also shown. This invention can be used to heat apparel, blankets, food, dwellings, containers, machinery, insect attractants, humidifiers, and perfume generators.
    Type: Grant
    Filed: October 9, 2002
    Date of Patent: May 4, 2010
    Assignee: Vacca Inc.
    Inventors: Robert G. Hockaday, Patrick S. Turner, Zachary R. Bradford, Marc D. DeJohn, Carlos J. Navas, Heathcliff L. Vaz
  • Patent number: 7320261
    Abstract: A new simulator of the human head and animal bodies mimics moisture transpiration from eyes and skin and heat emission. The present invention used to demonstrate and quantify anti-fogging performance of goggles and apparel. Thin water permeable membranes are mounted onto a container containing a thermostatically controlled, heated and stirred reservoir of water as a simulation of the moisture source of the human eyes and skin. A light source and optical mesh patterns help illuminate water condensation on the inner lens of the goggles. The simulator results in a reliable and convenient demonstration and testing system for moisture condensation in goggle lenses, and heat and moisture apparel.
    Type: Grant
    Filed: January 18, 2005
    Date of Patent: January 22, 2008
    Assignee: Arena Industries, LLC
    Inventors: Robert G. Hockaday, Patrick S. Turner, Marc D. DeJohn
  • Publication number: 20070184238
    Abstract: Artificial stoma formed with multilayered structures that actuate with humidity, temperature, chemical environment or light. These actuators can be incorporated into shoes, apparel, fuel cells, machinery, and buildings to control fluid flow or diffusion to regulate humidity, temperature, chemical environment, or light. These actuators can be used as sensors, modify structure, or appearance for greater function, comfort, or aesthetics.
    Type: Application
    Filed: February 6, 2007
    Publication date: August 9, 2007
    Inventors: Robert G. Hockaday, Patrick S. Turner, Marc D. DeJohn, Liviu Popa-Simil, Laura A. Hockaday
  • Patent number: 6994433
    Abstract: An eyewear has a gasket between the user and lenses that electrostatically filter the air flow of particulate while still permitting a gentle flow of air to maintain comfort to the wearer of the eyewear, and prevent fogging on the lenses. The electret filter material forms a perimeter around the eyes and lenses to remove, small to large particulates, from microns to millimeters. The filters can be formed with a choice of face contact gasket, baffles, coarse filters, and electret filter density. Baffles or coarse filters over the electret filters are used to protect the electret filter from damage from larger particles and transfer heat to the airflow.
    Type: Grant
    Filed: October 7, 2003
    Date of Patent: February 7, 2006
    Assignee: Energy Related Devices, Inc.
    Inventors: Robert G. Hockaday, Patrick S. Turner, Marc D. DeJohn, Carlos J. Navas, Heathcliff L. Vaz
  • Patent number: 6953637
    Abstract: A selective gas permeable membrane allows hydrogen to vent from a battery while preventing other gases from entering the battery. The surface of the filter membrane also catalytically combusts hydrogen and oxygen if both are evolved inside the battery and retains the resulting water for use in the battery. The membrane is made with a porous plastic substrate coated with a thin metal film permeable to hydrogen, and additional coatings. These coatings protect the surfaces, and catalytically combust hydrogen and oxygen.
    Type: Grant
    Filed: June 1, 2001
    Date of Patent: October 11, 2005
    Assignee: Energy Related Devices, Inc.
    Inventors: Robert G. Hockaday, Patrick S. Turner, Zachary R. Bradford, Marc D. DeJohn, Carlos J. Navas, F. Wade Uhrich, Heathcliff L. Vaz, L. Luke Vazul
  • Publication number: 20040209206
    Abstract: This invention discloses a portable catalytic combustion heater. Fuel vapor and air are supplied to a catalyst which promotes the flameless combustion of the fuel, releasing heat. The fuel is supplied as a liquid, passes through a selectively permeable membrane such that fuel vapor exits the membrane and is fed to the catalyst. Additional features such as porous supports and means of enhancing and diminishing the catalytic rate of combustion and controlling the heat output are also shown. This invention can be used to heat apparel, blankets, food, dwellings, containers, machinery, insect attractants, humidifiers, and perfume generators.
    Type: Application
    Filed: April 8, 2004
    Publication date: October 21, 2004
    Inventors: Robert G. Hockaday, Patrick S. Turner, Zachary R. Bradford, Marc D. DeJohn, Carlos J. Navas, Heatcliff L. Vaz
  • Patent number: 6772448
    Abstract: A goggle resistant to fogging is provided. The goggle consists of a water wicking and thermal transfer face gasket combined with heat transfer inlets and outlets optimized for heat transfer to air flow through the goggle. With low airflow resistance in the vertically oriented inlets and outlets, the goggle ventilates by natural convection removing moisture and keeping the goggle from fogging. Simultaneously, the present goggle results in greater comfort for the user.
    Type: Grant
    Filed: December 12, 2002
    Date of Patent: August 10, 2004
    Assignee: Energy Related Devices, Inc.
    Inventors: Robert G. Hockaday, Patrick S. Turner, Zachary Bradford, Marc D. DeJohn, Carlos J. Navas, Heathcliff L. Vaz
  • Publication number: 20040105070
    Abstract: An eyewear has a gasket between the user and lenses that electrostatically filter the air flow of particulate while still permitting a gentle flow of air to maintain comfort to the wearer of the eyewear, and prevent fogging on the lenses. The electret filter material forms a perimeter around the eyes and lenses to remove, small to large particulates, from microns to millimeters. The filters can be formed with a choice of face contact gasket, baffles, coarse filters, and electret filter density. Baffles or coarse filters over the electret filters are used to protect the electret filter from damage from larger particles and transfer heat to the airflow.
    Type: Application
    Filed: October 7, 2003
    Publication date: June 3, 2004
    Inventors: Robert G. Hockaday, Patrick S. Turner, Marc D. DeJohn, Carlos J. Navas, Heathcliff L. Vaz
  • Patent number: 6645651
    Abstract: A system of two fuel ampoules that can deliver a reactant by diffusion through one of the ampoule walls to the other, such that when said reactant enters the second ampoule, it reacts with another reactant in said second ampoule, making hydrogen gas as a product. Both ampoules are stored in a fuel impermeable container. These ampoules used with small low power fuel cells which need a steady controlled uniform delivery of vaporous fuel such hydrogen and alcohols. This fueling system provides a simple safe fuel interactive system for small hydrogen fuel cells that prevents inadvertent hydrogen production by any single ampoule being exposed to water or typical consumer environments.
    Type: Grant
    Filed: June 1, 2001
    Date of Patent: November 11, 2003
    Inventors: Robert G. Hockaday, Patrick S. Turner, Zachary R. Bradford, Marc D. DeJohn, Carlos J. Navas, F. Wade Uhrich, Heathcliff L. Vaz, L. Luke Vazul
  • Patent number: 6630266
    Abstract: A fuel ampoule for fuel cells delivers fuel by diffusion through the ampoule walls. The fuel ampoule is stored in a fuel impermeable container. These ampoules used with small low power fuel cells need a steady controlled uniform delivery of vaporous fuel such as alcohols. This fueling system avoids the leakage problems of liquid fuel, and may be easily packaged for small compact fuel cell systems.
    Type: Grant
    Filed: March 30, 2001
    Date of Patent: October 7, 2003
    Assignee: Manhattan Scientifics, Inc.
    Inventors: Robert G. Hockaday, Patrick S. Turner, Marc D. DeJohn, Carlos J. Navas, Heathcliff L. Vaz, L. Luke Vazul
  • Patent number: 6544400
    Abstract: A hydrogen source system delivers a controlled fuel stream to applications, using wicking to control the contact between a mixture of NaBH4, NaOH and H2O and a hydrolyzing catalyst to create a feedback mechanism to automatically maintain a constant pressure production supply of hydrogen. A small compact device packaged for storage, the system operates in any orientation and is mobile. The system is a small portable packaged hydrogen generator for small fuel cells to power applications that are currently powered by batteries. These packaged devices have higher energy per unit mass, higher energy per unit volume, are more convenient for energy users, environmentally less harmful, and less expensive than conventional power sources.
    Type: Grant
    Filed: March 30, 2001
    Date of Patent: April 8, 2003
    Assignee: Manhattan Scientifics, Inc.
    Inventors: Robert G. Hockaday, Patrick S. Turner, Marc D. DeJohn, Carlos J. Navas, Heathcliff L. Vaz, L. Luke Vazul
  • Publication number: 20020182459
    Abstract: A system of two fuel ampoules that can deliver a reactant by diffusion through one of the ampoule walls to the other, such that when said reactant enters the second ampoule, it reacts with another reactant in said second ampoule, making hydrogen gas as a product. Both ampoules are stored in a fuel impermeable container. These ampoules used with small low power fuel cells which need a steady controlled uniform delivery of vaporous fuel such hydrogen and alcohols. This fueling system provides a simple safe fuel interactive system for small hydrogen fuel cells that prevents inadvertent hydrogen production by any single ampoule being exposed to water or typical consumer environments.
    Type: Application
    Filed: June 1, 2001
    Publication date: December 5, 2002
    Inventors: Robert G. Hockaday, Patrick S. Turner, Zachary R. Bradford, Marc D. DeJohn, Carlos J. Navas, F. Wade Uhrich, Heathcliff L. Vaz, L. Luke Vazul
  • Publication number: 20020182482
    Abstract: A selective gas permeable membrane allows hydrogen to vent from a battery while preventing other gases from entering the battery. The surface of the filter membrane also catalytically combusts hydrogen and oxygen if both are evolved inside the battery and retains the resulting water for use in the battery. The membrane is made with a porous plastic substrate coated with a thin metal film permeable to hydrogen, and additional coatings. These coatings protect the surfaces, and catalytically combust hydrogen and oxygen.
    Type: Application
    Filed: June 1, 2001
    Publication date: December 5, 2002
    Inventors: Robert G. Hockaday, Patrick S. Turner, Zachary R. Bradford, Marc D. DeJohn, Carlos J. Navas, F. Wade Uhrich, Heathcliff L. Vaz, L. Luke Vazul
  • Publication number: 20010049045
    Abstract: A fuel ampoule for fuel cells delivers fuel by diffusion through the ampoule walls. The fuel ampoule is stored in a fuel impermeable container. These ampoules used with small low power fuel cells need a steady controlled uniform delivery of vaporous fuel such as alcohols. This fueling system avoids the leakage problems of liquid fuel, and may be easily packaged for small compact fuel cell systems.
    Type: Application
    Filed: March 30, 2001
    Publication date: December 6, 2001
    Inventors: Robert G. Hockaday, Patrick S. Turner, Marc D. DeJohn, Carlos J. Navas, Heathcliff L. Vaz, L. Luke Vazul