Patents by Inventor Dennis L. Ripley

Dennis L. Ripley 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).

  • Publication number: 20190351728
    Abstract: A utility vehicle includes a plurality of ground-engaging members, a frame assembly, a cab frame assembly, a front suspension assembly, a rear suspension assembly, a power steering assembly, and a powertrain assembly, all of which may be configured to lower the center of gravity of the vehicle.
    Type: Application
    Filed: August 5, 2019
    Publication date: November 21, 2019
    Applicant: Polaris Industries Inc.
    Inventors: Aaron D. Deckard, Adam J. Schlangen, Alex R. Scheuerell, Aaron J. Nysse, Anthony J. Ripley, Daniel L. Goffman, Andy T. Ives, Donovan L. Fredrickson, Gordon J. Steinmetz, Keith A. Hollman, Anthony J. Komarek, Corrie S. Roytek, Shawn D. Peterson, Dennis J. Lutz
  • Patent number: 10369861
    Abstract: A utility vehicle includes a plurality of ground-engaging members, a frame assembly, a cab frame assembly, a front suspension assembly, a rear suspension assembly, a power steering assembly, and a powertrain assembly, all of which may be configured to lower the center of gravity of the vehicle.
    Type: Grant
    Filed: September 4, 2014
    Date of Patent: August 6, 2019
    Assignee: Polaris Industries Inc.
    Inventors: Aaron D. Deckard, Adam J. Schlangen, Alex R. Scheuerell, Aaron J. Nysse, Anthony J. Ripley, Daniel L. Goffman, Andy T. Ives, Donovan L. Fredrickson, Gordon J. Steinmetz, Corrie S. Roytek, Shawn D. Peterson, Dennis J. Lutz
  • Patent number: 4044066
    Abstract: Organic compounds are dehydrogenated to compounds having a higher degree of unsaturation by contacting the feedstock in the vapor phase at an elevated temperature in the presence of an oxygen-containing gas with a catalyst containing nickel in combination with phosphorus and oxygen. The nickel-phosphorus-oxygen catalysts are particularly characterized in that they contain from 0.1 to 16.8 weight percent phosphorus, based on the weight of the nickel-phosphorus-oxygen catalyst. Representative of such conversions is the oxidative dehydrogenation of butane to 1,3-butadiene. The conversion products are valuable compounds particularly useful as intermediates for the preparation of polymeric materials such as synthetic rubbers and the like.
    Type: Grant
    Filed: October 8, 1975
    Date of Patent: August 23, 1977
    Assignee: Phillips Petroleum Company
    Inventor: Dennis L. Ripley
  • Patent number: 3988334
    Abstract: A method is provided for producing methane in which hydrogen and carbon monoxide are contacted in the presence of a supported nickel or cobalt catalyst which is further promoted by a noble metal of Group VIII of the Periodic Table. In an embodiment of the invention a metal from Group VIB of the Periodic Table, preferably tungsten, is used along with the Group VIII noble metal to promote the methanation reaction.
    Type: Grant
    Filed: May 16, 1975
    Date of Patent: October 26, 1976
    Assignee: Phillips Petroleum Company
    Inventors: Jack N. Finch, Dennis L. Ripley
  • Patent number: 3985641
    Abstract: Alkanes are catalytically cracked employing a catalyst comprising unpromoted calcium oxide or at least one alkaline earth oxide together with a promoting amount of an additional component.BACKGROUNDThe invention relates to a method for cracking alkanes.Catalytic cracking of various hydrocarbons to provide more valuable or more useful products constitutes a very important part of refining operations. Although many catalytic cracking processes and catalysts are known, catalytic cracking is an area of continuing research in an effort to find new processes and catalysts which are more efficient, more selective to desired products, and more economical.An object of the invention is to crack alkanes.Another object of the invention is to crack alkanes using a catalyst.Still another object of the invention is to provide a catalyst for cracking alkanes.Other objects, aspects and advantages of the invention will be apparent to those skilled in the art upon studying the specification and the appended claims.
    Type: Grant
    Filed: April 15, 1974
    Date of Patent: October 12, 1976
    Assignee: Phillips Petroleum Company
    Inventors: Jack N. Finch, Dennis L. Ripley
  • Patent number: 3943068
    Abstract: Organic compounds are dehydrogenated to compounds having a higher degree of unsaturation by contacting the feedstock in the vapor phase at an elevated temperature in the presence of an oxygen-containing gas with a catalyst containing nickel in combination with phosphorus and oxygen. The nickel-phosphorus-oxygen catalysts are particularly characterized in that they contain from 0.1 to 16.8 weight percent phosphorus, based on the weight of the nickel-phosphorus-oxygen catalyst. Representative of such conversions is the oxidative dehydrogenation of butane to 1,3-butadiene. The conversion products are valuable compounds particularly useful as intermediates for the preparation of polymeric materials such as synthetic rubbers and the like.
    Type: Grant
    Filed: May 6, 1971
    Date of Patent: March 9, 1976
    Assignee: Phillips Petroleum Company
    Inventor: Dennis L. Ripley