Patents by Inventor Christos Paparizos

Christos Paparizos 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: 4338463
    Abstract: Compositions of the empirical formula:Mo.sub.12 P.sub.0.1- Te.sub.0.01-2 M.sub.0.1-3 M'.sub.0.01-3 X.sub.a O.sub.bwhereM is at least one of K, Rb and Cs;M' is at least one of Cu and V;X is at least one of Ba, Zn, Ga, Nb, Cd, Ti, Ca, Bi, Mg, Ta, Zr, Ce, Ni, Co, Cr, Fe and Tl when a>0;a is a number of 0 to about 2; andb is a number that satisfies the valence requirements of the other elements present,are excellent catalysts for the oxydehydrogenation of saturated, lower aliphatic acids and esters to the corresponding unsaturated acids and esters.
    Type: Grant
    Filed: October 3, 1980
    Date of Patent: July 6, 1982
    Assignee: The Standard Oil Company
    Inventors: Wilfrid G. Shaw, Christos Paparizos
  • Patent number: 4314075
    Abstract: Olefinic acids and esters, such as methacrylic acid and methylmethacrylate, are prepared by contacting in the presence of molecular oxygen the corresponding saturated acid or ester, such as isobutyric acid or methylisobutyrate with the catalyst of the empirical formula:Mo.sub.12 P.sub.0.1-3 M.sub.0.1-3 Cu.sub.0.01-2 V.sub.0.01-2 X.sub.0.01-2 M'.sub.a O.sub.b (I)whereM is at least one of K, Rb and Cs;X is at least one of Ba, La, Ga, Al, Ag, Cd, Ti, Tl, Hg, Pb and Zn;M' is at least one of Fe, Co, Ni, Sr, Mn, In, Ta, Ge, S and Be when a >0;a is a number of 0 to about 2; andb is a number that satisfies the valence requirements of the other elements present.
    Type: Grant
    Filed: September 5, 1980
    Date of Patent: February 2, 1982
    Assignee: The Standard Oil Company
    Inventors: Wilfrid G. Shaw, Philip L. Kuch, Christos Paparizos
  • Patent number: 4309392
    Abstract: The invention herein is directed toward a process for the conversion of oxides of nitrogen to nitrogen gas by employing a reactant carbon fiber or inter host carbon material at a temperature of about 550.degree. C. The reactant material can be utilized alone or on a support material; in reactors such as fixed bed, fluid bed and radial flow; and, if desired, can be regenerated during the conversion process.
    Type: Grant
    Filed: August 5, 1980
    Date of Patent: January 5, 1982
    Assignee: Standard Oil Company
    Inventors: Wilfrid G. Shaw, Christos Paparizos, Louis J. Velenyi
  • Patent number: 4307247
    Abstract: Saturated, lower aliphatic acids and esters are oxydehydrogenated to the corresponding unsaturated acids and esters by use of a catalyst of the empirical formula:Mo.sub.12 P.sub.0.1-3 Bi.sub.0.01-2 M.sub.0.1-3 Cu.sub.0.01-2 V.sub.0.01-3 X.sub.a M'.sub.b O.sub.c (I)whereM is at least one of K, Rb and Cs;X is at least one of Ba, Zn, Ga, Cd, Ti, when a>0;M' is at least one of Ca, Mg, Ta, Zr, Ce, Ni, Co, Cr, Fe and Tl when b>0;a is a number of 0 to about 2;b is a number of 0 to about 2; andc is a number that satisfies the valence requirements of the other elements present.
    Type: Grant
    Filed: September 5, 1980
    Date of Patent: December 22, 1981
    Assignee: Standard Oil Company
    Inventors: Wilfrid G. Shaw, James E. Rinz, Christos Paparizos
  • Patent number: 4301031
    Abstract: Compositions of the empirical formula:Mo.sub.12 P.sub.0.1-3 M.sub.0.1-3 Cu.sub.0.1-2 V.sub.0.1-2 X.sub.0.01-2 Y.sub.a O.sub.b (I)whereM is at least one of K, Rb and Cs;X is at least one of Ba, La, Ga, Al, Ag, Cd, Ti, Tl, Hg, Pb and Zn;Y is at least one of Fe, Co, Ni, Sr, Mn, In, Ta, Ge, S and Be when a>0;a is a number of 0 to about 2; andb is a number that satisfies the valence requirements of the other elements present,are excellent catalysts for the oxidation of methacrolein to methacrylic acid.
    Type: Grant
    Filed: August 5, 1980
    Date of Patent: November 17, 1981
    Assignee: The Standard Oil Company
    Inventors: Wilfrid G. Shaw, Philip L. Kuch, Christos Paparizos
  • Patent number: 4301030
    Abstract: Compositions of the empirical formula:Mo.sub.12 P.sub.0.1-3 Bi.sub.0.01-2 M.sub.0.1-3 Cu.sub.0.01-2 V.sub.0.01-3 X.sub.a Y.sub.b O.sub.cwhereM is at least one of K, Rb and Cs;X is at least one of Ba, Zn, Ga, Cd and Ti when a>0;Y is at least one of Ca, Mg, Ta, Zr, Ce, Ni, Co, Cr, Fe and Tl when b>0;a is a number of 0 to about 2;b is a number of 0 to about 2; andc is a number that satisfies the valence requirements of the other elements present,are excellent catalysts for the oxidation of methcrolein to methacrylic acid.
    Type: Grant
    Filed: August 5, 1980
    Date of Patent: November 17, 1981
    Assignee: The Standard Oil Company
    Inventors: Wilfrid G. Shaw, James E. Rinz, Christos Paparizos
  • Patent number: 4280929
    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: September 17, 1979
    Date of Patent: July 28, 1981
    Assignee: Standard Oil Company
    Inventors: Wilfrid G. Shaw, Christos Paparizos, James L. Callahan
  • Patent number: 4279829
    Abstract: Hydroperoxides are catalytically decomposed using a novel metal complex of the formula: ##STR1## wherein M is a positively charged metal or metal compound;Z is S, O, P, S--P, or S--S;L is C, P, or N; andA is selected from the group consisting of halogens; hydrogen; N--R wherein R is selected from the group consisting of H, C.sub.1-30 alkyls and 4 to 8 membered aryls optionally substituted with one or more C.sub.1-20 alkyls and C.sub.1-20 alkoxys; and hydrocarbon groups containing up to 30 carbon atoms optionally substituted with halogen atoms, C.sub.1-12 hydroxy groups, C.sub.1-12 acid groups, C.sub.1-12 aldehyde groups, C.sub.1-12 ketone groups, and C.sub.1-10 nitrile groups; andwhereinn is 1 or 2; andb is 1, 2 or 3.These catalysts are especially effective in decomposing either cumene hydroperoxide or cyclohexylbenzene hydroperoxide to phenol.
    Type: Grant
    Filed: October 31, 1979
    Date of Patent: July 21, 1981
    Assignee: The Standard Oil Company
    Inventors: Louis J. Velenyi, Christos Paparizos, Serge R. Dolhyj
  • Patent number: 4262153
    Abstract: Hydroperoxides are catalytically decomposed using a novel metal complex of the formula: ##STR1## wherein M is a positively charged metal or metal compound;Z is S, O, P, S-P, or S-S;L is C, P, or N; andA is selected from the group consisting of halogens; hydrogen; N-R wherein R is selected from the group consisting of H, C.sub.1-30 alkyls and 4 to 8 membered aryls optionally substituted with one or more C.sub.1-20 alkyls and C.sub.1-20 alkoxys; and hydrocarbon groups containing up to 30 carbon atoms optionally substituted with halogen atoms, C.sub.1-12 hydroxy groups, C.sub.1-12 acid groups, C.sub.1-12 aldehyde groups, C.sub.1-12 ketone groups, and C.sub.1-10 nitrile groups; andwhereinn is 1 or 2; andb is 1, 2 or 3.These catalysts are especially effective in decomposing either cumene hydroperoxide or cyclohexylbenzene hydroperoxide to phenol.
    Type: Grant
    Filed: December 26, 1978
    Date of Patent: April 14, 1981
    Assignee: The Standard Oil Company
    Inventors: Louis J. Velenyi, Christos Paparizos, Serge R. Dolhyj