Patents by Inventor James L. Callahan

James L. Callahan 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: 10535852
    Abstract: A rechargeable battery comprises a chassis including a lower fixation plate, and a plurality of battery cells on the lower fixation plate. The lower fixation plate includes at least one flow channel positioned to collect condensate from the battery cells and move the collected condensate away from the battery cells.
    Type: Grant
    Filed: February 24, 2014
    Date of Patent: January 14, 2020
    Assignee: The Boeing Company
    Inventors: Kevin S. Callahan, Bruce L. Drolen, James C. Russell, John R. Lowell, Thomas P. Barrera, Timothy R. North
  • Patent number: 4877898
    Abstract: A process for the one step esterification of aldehydes and alcohols comprises the steps of combining an aldehyde with an alcohol, in the presence of oxygen and in contact with a catalyst having the general formulaPdTe.sub.a Zn.sub.d E.sub.ewhereE is one or more metals from the group consisting of group IA, IIA, IVA, VIIB or VIII metals, As or Sb; anda, d and e are from about 0 to 3 with the proviso that at least d or e.noteq.0.
    Type: Grant
    Filed: June 12, 1986
    Date of Patent: October 31, 1989
    Assignee: The Standard Oil Company
    Inventors: Christos Paparizos, Wilfrid G. Shaw, James L. Callahan
  • Patent number: 4864057
    Abstract: A process is provided for the oxydehydrogenation of saturated carboxylic acids or a lower alkyl ester thereof with oxygen in the presence of iron phosphorus oxide catalysts containing promoters selected from the group Ag, Al, B, Be, Cd, Co, Cu, Ga, Ge, In, Mn, Ni, Te, Th, Ti, Tl, U, V, Zn, Zr, rare earths and mixtures thereof.
    Type: Grant
    Filed: August 17, 1982
    Date of Patent: September 5, 1989
    Inventors: S. Erik Pedersen, James L. Callahan, Harley F. Hardman
  • Patent number: 4742035
    Abstract: A process is provided for the oxydehydrogenation of saturated carboxylic acids with oxygen in the presence of iron phosphorus oxide catalysts containing promoters selected from the group Ag, Al, B, Cd, Co, Cr, Cu, Ga, Ge, In, Mn, Ni, Te, Th, Ti, Tl, U, V, Zn, Zr, rare earths and mixtures thereof.
    Type: Grant
    Filed: January 28, 1987
    Date of Patent: May 3, 1988
    Assignee: The Standard Oil Co.
    Inventors: S. Erik Pederson, James L. Callahan, Harley F. Hardman
  • Patent number: 4714695
    Abstract: A method for the preparation of a high activity palladium metal based catalyst having the formulaPdTe.sub.a Zn.sub.d E.sub.ewhereE is one or more metals from the group IIA, IVA, VA, IB, VIIB or VIII; anda, d and e are from about 0 to 3, with the proviso that at least d or e.noteq.0.The method comprises the step of forming an aqueous solution of a palladium compound, adding to the solution a powder of a reducing metal more electropositive than palladium and reducing the palladium to its metallic state on the surface of the reducing metal and, separating the resulting catalyst from the solution. Catalysts prepared according to this method are useful for producing esters from aldehydes and alcohols and provide greater conversions to the ester than catalysts prepared by previous processes.
    Type: Grant
    Filed: April 16, 1986
    Date of Patent: December 22, 1987
    Assignee: The Standard Oil Company
    Inventors: Christos Paparizos, Wilfrid G. Shaw, James L. Callahan
  • Patent number: 4705675
    Abstract: A method for preparing a molecular sieving metallosilicate is disclosed which comprises(A) providing an aqueous dispersion of colloidal particles comprising contiguous mixtures of silica and the oxide of a transition metal selected from the group consisting of Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Zn, Zr, Y or a mixture of two or more of said metals;(B) mixing an effective amount of a mineralizing agent and/or synthesis directing agent with said dispersion to form a gel; and(C) maintaining said gel at a temperature of about 80.degree. C. to about 300.degree. C. for an effective period of time to provide said metallosilicate.
    Type: Grant
    Filed: November 16, 1984
    Date of Patent: November 10, 1987
    Assignee: The Standard Oil Company
    Inventors: Michael J. Desmond, Marc A. Pepera, James L. Callahan
  • Patent number: 4634502
    Abstract: A process for the reductive deposition of polyoxometallate complexes on supports. The process includes the steps of forming a solution of at least one polyoxometallate compound in a solvent, said compound having the formula A.sub.a (L.sub.l M.sub.m J.sub.z O.sub.y), adding a quantity of a support material having electronic conductivity to the solution, charging the solution containing the support material to an electrolytic cell in contact with the cathode thereof, the cell having a separate compartment for the anode, passing a current of from about 0.1 to about 500 mA/cm.sup.2 of electrode area through the cell whereby the support material receives a deposit of a polyoxometallate wherein the average oxidation state of the metals therein has been reduced to a valence greater than zero and, thereafter separating and recovering the support material carrying the reduced metallate complex.
    Type: Grant
    Filed: August 26, 1985
    Date of Patent: January 6, 1987
    Assignee: The Standard Oil Company
    Inventors: James L. Callahan, Michael J. Desmond, Marc A. Pepera
  • Patent number: 4623635
    Abstract: A method for the preparation of a high activity palladium metal based catalyst having the formulaPdTe.sub.a Zn.sub.d E.sub.ewhereE is one or more metals from the group IIA, IVA, VA, IB, VIIB or VIII; anda, d and e are from about 0 to 3, with the proviso that at least d or e.noteq.0.The method comprises the step of forming an aqueous solution of a palladium compound, adding to the solution a powder of a reducing metal more electropositive than palladium and reducing the palladium to its metallic state on the surface of the reducing metal and, separating the resulting catalyst from the solution. Catalysts prepared according to this method are useful for producing esters from aldehydes and alcohols and provide greater conversions to the ester than catalysts prepared by previous processes.
    Type: Grant
    Filed: April 18, 1985
    Date of Patent: November 18, 1986
    Assignee: The Standard Oil Company
    Inventors: Christos Paparizos, Wilfrid G. Shaw, James L. Callahan
  • Patent number: 4622424
    Abstract: A process for conducting a combination of fixed and fluid-bed catalytic reactions is achieved by employing fixed-bed catalysts on supports within the fluid bed. The fluid-bed catalysts may move in both directions through the fixed bed, thereby giving advantages of both types of beds in one reactor.
    Type: Grant
    Filed: September 6, 1985
    Date of Patent: November 11, 1986
    Assignee: The Standard Oil Company
    Inventors: James L. Callahan, Arthur F. Miller, Wilfrid G. Shaw
  • Patent number: 4528398
    Abstract: The present invention relates to a method for the preparation of phosphomolybdic acid based catalysts utilized in the oxidation of aldehydes to unsaturated carboxylic acids by forming a solution of hydrated phosphomolybdic acid in a substantially anhydrous alkanol, adding a base to the solution, evaporating the solution to yield a catalyst powder and thereafter drying and calcining the powder to form the active catalyst. A second method for preparation is also provided and includes the steps of forming a solution of hydrated phosphomolybdic acid in a substantially anhydrous alkanol, evaporating the solution to form a concentrate, impregnating a catalyst support material with the concentrate, contacting the impregnated support with ammonia gas in an amount sufficient to form an insoluble precipitate of ammonium alkyl phosphomolybdic acid within the pore structure of said support material and thereafter drying and calcining said impregnated support material so as to form a coated catalyst.
    Type: Grant
    Filed: November 18, 1982
    Date of Patent: July 9, 1985
    Assignee: The Standard Oil Company (Ohio)
    Inventors: James L. Callahan, Wilfrid G. Shaw, Arthur F. Miller
  • Patent number: 4470931
    Abstract: A process for conducting a combination of fixed and fluid-bed catalytic reactions is achieved by employing fixed-bed catalysts on supports within the fluid bed. The fluid-bed catalysts may move in both directions through the fixed bed, thereby giving advantages of both types of beds in one reactor.
    Type: Grant
    Filed: December 13, 1979
    Date of Patent: September 11, 1984
    Assignee: The Standard Oil Company
    Inventors: James L. Callahan, Arthur F. Miller, Wilfrid G. Shaw
  • Patent number: 4453006
    Abstract: A method for preparing attrition resistant, high percentage active component catalysts comprises using two types of silica, one of which is fumed silica, in a two stage catalyst preparation.
    Type: Grant
    Filed: February 12, 1981
    Date of Patent: June 5, 1984
    Assignee: The Standard Oil Company
    Inventors: Wilfrid G. Shaw, Christos Paparizos, James L. Callahan
  • Patent number: 4444906
    Abstract: The present invention relates to a method for the preparation of phosphomolybdic acid based catalysts by forming a solution of hydrated phosphomolybdic acid in a substantially anhydrous alkyl alcohol, adding a base to the solution, evaporating the solution to yield a catalyst powder and thereafter drying and calcining the powder to form the active catalysts. A second method for preparation is also provided and includes the steps of forming a solution of hydrated phosphomolybdic acid in a substantially anhydrous alkyl alcohol, evaporating the solution to form a concentrate, impregnating a catalyst support material with the concentrate, contacting the impregnated support with ammonia gas in an amount sufficient to form an insoluble precipitate of ammonium alkyl phosphomolybdic acid within the pore structure of said support material and thereafter drying and calcining said impregnated support material so as to form a coated catalyst.
    Type: Grant
    Filed: November 8, 1982
    Date of Patent: April 24, 1984
    Assignee: The Standard Oil Company
    Inventors: James L. Callahan, Wilfrid G. Shaw, Arthur F. Miller
  • Patent number: 4443555
    Abstract: The present invention relates to a method for the preparation of phosphomolybdic acid based catalysts by forming a solution of hydrated phosphomolybdic acid in a substantially anhydrous alkyl alcohol, heating the solution to form a concentrate, and thereafter drying and calcining the concentrate support material so as to form the catalyst. Because the catalyst is prepared in alcoholic rather than aqueous solution, it has a greater activity in converting aldehydes to their respective unsaturated carboxylic acids than known phosphomolybdic acid based catalysts. Furthermore, the deammoniation step of the prior art is no longer required.
    Type: Grant
    Filed: November 8, 1982
    Date of Patent: April 17, 1984
    Assignee: The Standard Oil Company
    Inventors: James L. Callahan, Wilfrid G. Shaw, Arthur F. Miller
  • Patent number: 4427792
    Abstract: A process is provided for the preparation of iron phosphorous mixed oxide catalysts which are highly active at moderate temperatures by introducing iron and phosphorus containing compounds and promoter element containing compounds, if any, into a substantially organic liquid medium, heating, separating the resulting precursor, drying and calcining. The catalysts are useful for the dehydrogenation or oxydehydrogenation of organic compounds such as aldehydes or carboxylic acids.
    Type: Grant
    Filed: August 10, 1981
    Date of Patent: January 24, 1984
    Assignee: The Standard Oil Company
    Inventors: S. Erik Pedersen, Noel J. Bremer, James L. Callahan
  • Patent number: 4341717
    Abstract: The present invention is a reactor that consists of a single shell that contains a reaction zone and a regeneration zone. The reaction zone and regeneration zone are arranged in such a manner that (a) a particulate solid may be transferred by flow of gases from the regeneration zone to the reaction zone by a first route and then back to the regeneration zone by a second route; and (b) the gases passing through the regeneration zone are not transferred to the reaction zone and the gases passing through the reaction zone are not transferred to the regeneration zone.
    Type: Grant
    Filed: December 8, 1978
    Date of Patent: July 27, 1982
    Assignee: The Standard Oil Company
    Inventors: James L. Callahan, Harley F. Hardman, Ernest C. Milberger
  • Patent number: 4335056
    Abstract: In the recovery of acrylonitrile from the gross reaction product produced during the commercial ammoxidation of propylene to produce acrylonitrile, an ammoxidation waste gas containing at least 65% nitrogen, carbon dioxide, carbon monoxide and a small amount of unreacted propylene is produced. In accordance with the invention, this ammoxidation waste gas is passed through a catalytic converter containing an oxidation or ammoxidation catalyst to convert the unreacted propylene into valuable product.
    Type: Grant
    Filed: January 5, 1981
    Date of Patent: June 15, 1982
    Assignee: Standard Oil Company
    Inventors: James L. Callahan, Wilfrid G. Shaw, David B. Terrill
  • Patent number: 4323520
    Abstract: The present invention relates to a process for the conversion of tertiary-butyl-containing compounds to methacrylic derivatives, and more particularly to a process for the conversion of tertiary-butyl-containing compounds selected from the group consisting of alkyl tertiary-butyl ethers, tertiary-butyl alcohol, isobutylene dimer (2,2,4-trimethylpentene) and isobutylene trimer, to methacrolein, methacrylic acid or methacrylonitrile.
    Type: Grant
    Filed: May 9, 1977
    Date of Patent: April 6, 1982
    Assignee: The Standard Oil Co.
    Inventors: Harley F. Hardman, James L. Callahan, Robert K. Grasselli
  • Patent number: 4315838
    Abstract: Catalysts with improved catalytic properties are produced by a novel process in which not all of the heat-decomposable salt in the pre-catalyst is driven off during pre-heating and the powdery pre-catalyst obtained by pre-heating is agglomerated by dropping a slurry of the powder onto a particle bed.
    Type: Grant
    Filed: June 5, 1978
    Date of Patent: February 16, 1982
    Assignee: Standard Oil Company
    Inventors: Arthur F. Miller, James L. Callahan, Wilfrid G. Shaw
  • Patent number: 4309310
    Abstract: Olefins, such as propylene, are allylically oxidized to corresponding unsaturated aldehydes and carboxylic acids, such as acrolein and acrylic acid, by contacting the olefin with molecular oxygen at allylic oxidation conditions in the presence of a trifluoroalkyl sulfonate or phosphonate catalyst, such as a catalyst formed by the reaction of vanadyl oxide and trifluoromethyl sulfonate.
    Type: Grant
    Filed: March 31, 1980
    Date of Patent: January 5, 1982
    Assignee: Standard Oil Company
    Inventor: James L. Callahan