Patents by Inventor Susan Patricia Donnelly

Susan Patricia Donnelly 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).

  • Process for preparing 2,6-dialkylnaphthalene
    Patent number: 6121501
    Abstract: A process for producing 2,6-dialkylnaphthalene from a hydrocarbon feedstock that contains at least one component selected from the group consisting of dialkylnaphthalene isomers, monoalkylnaphthalene isomers, polyalkylnaphthalenes, and naphthalene, is provided that includes the following steps:I. separating the hydrocarbon feedstock and/or a dealkylation product fed from step III into a naphthalene fraction, a monoalkylnaphthalene fraction, a dialkylnaphthalene fraction and a remaining products fraction;II. separating and purifying 2,6-dialkylnaphthalene from the dialkylnaphthalene fraction of step I;III. dealkylating the hydrocarbon feedstock and/or the remaining products fraction of step I and feeding the dealkylation product to step I; andIV. alkylating the naphthalene and monoalkylnaphthalene fractions of step I;wherein the hydrocarbon feedstock is fed to step I or step III.
    Type: Grant
    Filed: April 9, 1999
    Date of Patent: September 19, 2000
    Assignees: Kabushiki Kaisha Kobe Seiko Sho, Mobil Oil Corporation
    Inventors: Masahiro Motoyuki, Koji Yamamoto, Ajit Vishwanath Sapre, John Paul Mc Williams, Susan Patricia Donnelly
  • Process for preparing 2,6-dialkylnaphthalene
    Patent number: 6018086
    Abstract: The present invention relates to a process of preparing dialkylnaphthylenes and polyalkylenenaphthyleneates.
    Type: Grant
    Filed: October 10, 1997
    Date of Patent: January 25, 2000
    Assignees: Kabushiki Kaisha Kobe Seiko Sho, Mobil Oil Corporation
    Inventors: Masahiro Motoyuki, Koji Yamamoto, Ajit Vishwanath Sapre, John Paul Mc Williams, Susan Patricia Donnelly
  • Isomerization of dimethylnaphthalene to produce 2,6-dimethylnaphthalene
    Patent number: 6018087
    Abstract: The present invention relates to a method of preparing 2,6-dimethylnaphthalene from a feed stream that contains hydrocarbons which contain dimethylnaphthalene isomers. The method includes the following steps:I. distillation and concentration of the dimethylnaphthalene isomers from the feed stream, to form a dimethylnaphthalene fraction,II. isomerization of the dimethylnaphthalene fraction to enrich the dimethylnaphthalene fraction in 2,6-dimethylnaphthalene, to form a 2,6-enriched dimethylnaphthalene fraction,III. purification of 2,6-dimethylnaphthalene from the 2,6-enriched dimethylnaphthalene fraction,wherein step II is conducted in the presence of a catalyst composition containing a synthetic zeolite characterized by an X-ray diffraction pattern including interplanar d-spacing (.ANG.)12.36.+-.10.411.03.+-.0.28.83.+-.10.146.18.+-.0.126.00.+-.0.104.06.+-.0.073.91.+-.0.013.42.+-.0.06,wherein the purification includes crystallization under pressure.
    Type: Grant
    Filed: October 10, 1997
    Date of Patent: January 25, 2000
    Assignees: Kabushiki Kaisha Kobe Seiko Sho., Mobil Oil Corporation
    Inventors: Masahiro Motoyuki, Koji Yamamoto, Shingo Yoshida, Seiichi Yamamoto, Ajit Vishwanath Sapre, John Paul Mc Williams, Susan Patricia Donnelly, Stuart Damon Hellring
  • Process for preparing 2,6-dialkylnaphthalene
    Patent number: RE39222
    Abstract: A process for producing 2,6-dialkylnaphthalene from a hydrocarbon feedstock that contains at least one component selected from the group consisting of dialkylnaphthalene isomers, monoalkylnaphthalene isomers, polyalkylnaphthalenes, and naphthalene, is provided that includes the following steps: I. separating the hydrocarbon feedstock and/or a dealkylation product fed from step III into a naphthalene fraction, a monoalkylnaphthalene fraction, a dialkylnaphthalene fraction and a remaining products fraction; II. separating and purifying 2,6-dialkylnaphthalene from the dialkylnaphthalene fraction of step I; III. dealkylating the hydrocarbon feedstock and/or the remaining products fraction of step I and feeding the dealkylation product to step I; and IV. alkylating the naphthalene and monoalkylnaphthalene fractions of step I; wherein the hydrocarbon feedstock is fed to step I or step III.
    Type: Grant
    Filed: February 19, 2002
    Date of Patent: August 1, 2006
    Assignees: Kobe Steel, Ltd., Mobile Oil Corporation
    Inventors: Masahiro Motoyuki, Koji Yamamoto, Ajit Vishwanath Sapre, John Paul McWilliams, Susan Patricia Donnelly
  • Process for preparing 2,6-dialkylnaphthalene
    Patent number: RE41136
    Abstract: The present invention relates to a process of preparing dialkylnaphthylenes and polyalkylenenaphthyleneates dialkylnaphthalenes and polyalkylenenaphthalates.
    Type: Grant
    Filed: January 24, 2002
    Date of Patent: February 16, 2010
    Assignees: Kobe Steel, Ltd, ExxonMobil Chemical Patents, Inc.
    Inventors: Masahiro Motoyuki, Koji Yamamoto, Ajit Vishwanath Sapre, John Paul McWilliams, Susan Patricia Donnelly