Patents by Inventor Darrell P. Eyman

Darrell P. Eyman 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: 7771702
    Abstract: The invention provides active, affordable, durable, and sulfur-tolerant catalysts and related precursors and processes useful in hydrogen production. The catalysts have a wide applicability. For example, in one embodiment, the invention provides sulfur-tolerant catalysts which, when used in a catalytic fuel processor, will facilitate sufficient hydrogen generation within 30 seconds or so of automobile start-up to generate around 50 kW of fuel cell power. Catalysts of the instant invention are made by reducing a catalyst precursor comprising a support phase impregnated with one or more elemental transition metals, wherein: (a) the support phase is formed by dispersion of a monolayer on the surface of a high surface area alumina support; and (b) the monolayer comprises XOnYO2, where (1) XOn is a redox active metal oxide and n is either 1.5, 2, or 2.5 depending on the oxidation number of X, and (2) YO2 is a redox inactive metal oxide. Ni—V2O5—ZrO2/Al2O3 catalysts of the instant invention are preferred.
    Type: Grant
    Filed: February 20, 2003
    Date of Patent: August 10, 2010
    Assignees: University of Iowa Research Foundation, Honda Motor Co., Ltd.
    Inventors: Darrell P. Eyman, Christopher Brooks
  • Publication number: 20040166056
    Abstract: The invention provides active, affordable, durable, and sulfur-tolerant catalysts and related precursors and processes useful in hydrogen production. The catalysts have a wide applicability. For example, in one embodiment, the invention provides sulfur-tolerant catalysts which, when used in a catalytic fuel processor, will facilitate sufficient hydrogen generation within 30 seconds or so of automobile start-up to generate around 50 kW of fuel cell power.
    Type: Application
    Filed: February 20, 2003
    Publication date: August 26, 2004
    Inventors: Darrell P. Eyman, Christopher Brooks
  • Patent number: 5089245
    Abstract: The present invention involves conversion of methanol, a relatively abundant and inexpensive, yet low energy fuel, to carbon monoxide and hydrogen, which have higher heats of combustion. The catalytic dehydrogenation of methanol is an endothermic process.heat+CH.sub.3 OH.revreaction.CO+2H.sub.2 (1)A new and efficient catalyst technology which promotes high methanol conversion and excellent selectivity for CO and H.sub.2 in this reaction would have several practical applications. Results clearly demonstrate that it is feasible to employ SMSC technology in the development of catalyst systems with commercial applications for methanol dehydrogenation.
    Type: Grant
    Filed: April 9, 1990
    Date of Patent: February 18, 1992
    Assignee: Accel Catalysis, Inc.
    Inventors: Darrell P. Eyman, Katherine B. Gloer, Andrew D. Schmitz
  • Patent number: 4898845
    Abstract: A new method for the use of microcrystallites of various materials as catalysts. The materials include metals, metal alloys and mixtures, and intermetallic compounds all of which are used as heterogeneous catalysts on porous supports. The method is different in that the microcrystallites are dispersed in molten salts which are to be used as a thin film coated on the internal surface of porous supports.
    Type: Grant
    Filed: December 12, 1988
    Date of Patent: February 6, 1990
    Assignee: University of Iowa Research Foundation
    Inventors: Ravindra Datta, Darrell P. Eyman