Patents by Inventor Scot D. Rassat

Scot D. Rassat 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: 6974496
    Abstract: The present invention provides compact adsorption systems that are capable of rapid temperature swings and rapid cycling. Novel methods of thermal swing adsorption and thermally-enhanced pressure swing adsorption are also described. In some aspects of the invention, a gas is passed through the adsorbent thus allowing heat exchangers to be very close to all portions of the adsorbent and utilize less space. In another aspect, the adsorption media is selectively heated, thus reducing energy costs. Methods and systems for gas adsorption/desorption having improved energy efficiency with capability of short cycle times are also described. Advantages of the invention include the ability to use (typically) 30-100 times less adsorbent compared to conventional systems.
    Type: Grant
    Filed: June 30, 2003
    Date of Patent: December 13, 2005
    Assignee: Battelle Memorial Institute
    Inventors: Robert S. Wegeng, Scot D. Rassat, Victoria S. Stenkamp, Ward E. TeGrotenhuis, Dean W. Matson, M. Kevin Drost, Vilayanur V. Viswanathan
  • Patent number: 6869462
    Abstract: A microchannel contactor and methods of contacting substances in microchannel apparatus are described. Some preferred embodiments are combined with microchannel heat exchange.
    Type: Grant
    Filed: March 7, 2003
    Date of Patent: March 22, 2005
    Assignee: Battelle Memorial Institute
    Inventors: Ward E. TeGrotenhuis, Scot D. Rassat, Victoria S. Stenkamp
  • Patent number: 6746515
    Abstract: The present invention provides compact adsorption systems that are capable of rapid temperature swings and rapid cycling. Novel methods of thermal swing adsorption and thermally-enhanced pressure swing adsorption are also described. In some aspects of the invention, a gas is passed through the adsorbent thus allowing heat exchangers to be very close to all portions of the adsorbent and utilize less space. In another aspect, the adsorption media is selectively heated, thus reducing energy costs. Methods and systems for gas adsorption/desorption having improved energy efficiency with capability of short cycle times are also described. In another aspect, the apparatus or methods utilize heat exchange channels of varying lengths that have volumes controlled to provide equal heat fluxes. Methods of fuel cell startup are also described. Advantages of the invention include the ability to use (typically) 30-100 times less adsorbent compared to conventional systems.
    Type: Grant
    Filed: April 29, 2002
    Date of Patent: June 8, 2004
    Assignee: Battelle Memorial Institute
    Inventors: Robert S. Wegeng, Scot D. Rassat, Ward E. TeGrotenhuis, Kevin Drost, Vilayanur V. Vishwanathan
  • Publication number: 20040069144
    Abstract: The present invention provides compact adsorption systems that are capable of rapid temperature swings and rapid cycling. Novel methods of thermal swing adsorption and thermally-enhanced pressure swing adsorption are also described. In some aspects of the invention, a gas is passed through the adsorbent thus allowing heat exchangers to be very close to all portions of the adsorbent and utilize less space. In another aspect, the adsorption media is selectively heated, thus reducing energy costs. Methods and systems for gas adsorption/desorption having improved energy efficiency with capability of short cycle times are also described. Advantages of the invention include the ability to use (typically) 30-100 times less adsorbent compared to conventional systems.
    Type: Application
    Filed: June 30, 2003
    Publication date: April 15, 2004
    Inventors: Robert S. Wegeng, Scot D. Rassat, Victoria S. Stenkamp, Ward E. TeGrotenhuis, Dean W. Matson, M. Kevin Drost, Vilayanur V. Viswanathan
  • Publication number: 20030221554
    Abstract: A microchannel contactor and methods of contacting substances in microchannel apparatus are described. Some preferred embodiments are combined with microchannel heat exchange.
    Type: Application
    Filed: March 7, 2003
    Publication date: December 4, 2003
    Inventors: Ward E. TeGrotenhuis, Scot D. Rassat, Victoria S. Stenkamp
  • Patent number: 6630012
    Abstract: The present invention provides compact adsorption systems that are capable of rapid temperature swings and rapid cycling. Novel methods of thermal swing adsorption and thermally-enhanced pressure swing adsorption are also described. In some aspects of the invention, a gas is passed through the adsorbent thus allowing heat exchangers to be very close to all portions of the adsorbent and utilize less space. In another aspect, the adsorption media is selectively heated, thus reducing energy costs. Methods and systems for gas adsorption/desorption having improved energy efficiency with capability of short cycle times are also described. Advantages of the invention include the ability to use (typically) 30-100 times less adsorbent compared to conventional systems.
    Type: Grant
    Filed: April 30, 2001
    Date of Patent: October 7, 2003
    Assignee: Battelle Memorial Institute
    Inventors: Robert S. Wegeng, Scot D. Rassat, Victoria S. Stenkamp, Ward E. TeGrotenhuis, Dean W. Matson, M. Kevin Drost, Vilayanur V. Viswanathan
  • Publication number: 20030015093
    Abstract: The present invention provides compact adsorption systems that are capable of rapid temperature swings and rapid cycling. Novel methods of thermal swing adsorption and thermally-enhanced pressure swing adsorption are also described. In some aspects of the invention, a gas is passed through the adsorbent thus allowing heat exchangers to be very close to all portions of the adsorbent and utilize less space. In another aspect, the adsorption media is selectively heated, thus reducing energy costs. Methods and systems for gas adsorption/desorption having improved energy efficiency with capability of short cycle times are also described. Advantages of the invention include the ability to use (typically) 30-100 times less adsorbent compared to conventional systems.
    Type: Application
    Filed: April 30, 2001
    Publication date: January 23, 2003
    Inventors: Robert S. Wegeng, Scot D. Rassat, Victoria S. Stenkamp, Ward E. TeGrotenhuis, Dean W. Matson, M. Kevin Drost, Vilayanur V. Viswanathan
  • Publication number: 20020194990
    Abstract: The present invention provides compact adsorption systems that are capable of rapid temperature swings and rapid cycling. Novel methods of thermal swing adsorption and thermally-enhanced pressure swing adsorption are also described. In some aspects of the invention, a gas is passed through the adsorbent thus allowing heat exchangers to be very close to all portions of the adsorbent and utilize less space. In another aspect, the adsorption media is selectively heated, thus reducing energy costs. Methods and systems for gas adsorption/desorption having improved energy efficiency with capability of short cycle times are also described. In another aspect, the apparatus or methods utilize heat exchange channels of varying lengths that have volumes controlled to provide equal heat fluxes. Methods of fuel cell startup are also described. Advantages of the invention include the ability to use (typically) 30-100 times less adsorbent compared to conventional systems.
    Type: Application
    Filed: April 29, 2002
    Publication date: December 26, 2002
    Inventors: Robert S. Wegeng, Scot D. Rassat, Ward E. TeGrotenhuis, Kevin Drost, Vilayanur V. Vishwanathan
  • Publication number: 20020025449
    Abstract: The electroactive product of the present invention is a metal cyanide film on a substrate, wherein the improvement is the metal cyanide film having a flux throughput capacity greater than 0.54 millicoulombs/second-cm2 as measured by the specific cyclic voltammetry procedure. The improved metal cyanide film generally has a flux throughput capacity greater than that of unimproved metal cyanide film wherein the improved metal cyanide film was deposited at a slow rate. The present invention enjoys the advantages of greater cation equivalent loading capacity, and achieving ion separations using half the amount of electricity as other electrochemical ion separations.
    Type: Application
    Filed: August 17, 1999
    Publication date: February 28, 2002
    Inventors: JOHANES H. SUKAMTO, MARK F. BUEHLER, SCOT D. RASSAT, RICK J. ORTH, MICHAEL A. LILGA, RICHARD T. HALLEN