Patents by Inventor Selda Gunsel

Selda Gunsel 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: 7598426
    Abstract: A diesel fuel comprising a mixture of normal paraffins and branched paraffins. The normal paraffins present in the diesel fuel is less than about 99% by weight; and the aromatic content in the diesel fuel is less than about 10% by weight. The diesel fuel has a cetane number of at least 40 and a sulfur content of less than about 100 ppm. Optionally, the diesel fuel may further include cycloparaffins, i.e., naphthenes. To increase the lubricity of the diesel fuel, a lubricity additive, such as fatty acid methyl ester, can be added to the diesel fuel.
    Type: Grant
    Filed: September 6, 2002
    Date of Patent: October 6, 2009
    Assignee: Shell Oil Company
    Inventors: Jiafu Fang, Selda Gunsel
  • Patent number: 7244522
    Abstract: A magnetic recording medium and method for forming the magnetic recording medium are described. The magnetic recording medium includes a magnetic layer formed on a non-magnetic support, and a lubricant layer over the magnetic layer. The lubricant layer includes a compound selected from the group consisting of hydrocarbyl-substituted cyclopentanes, hydrocarbyl-substituted cyclopentenes, hydrocarbyl-substituted cyclopentadienes, and mixtures or derivatives thereof. The lubricant layer also may be used on a magnetic head for reading and writing information on a magnetic recording medium. The magnetic recording medium and the magnetic head may be used to manufacture computer disk drives, compact disk drives, audio equipment, and video equipment.
    Type: Grant
    Filed: October 18, 2005
    Date of Patent: July 17, 2007
    Assignee: Shell Oil Company
    Inventors: Selda Gunsel, Clifford Venier, I-Ching Chiu
  • Patent number: 7195828
    Abstract: A magnetic recording medium and method for forming the magnetic recording medium are described. The magnetic recording medium includes a magnetic layer formed on a non-magnetic support, and a lubricant layer over the magnetic layer. The lubricant layer includes a compound selected from hydrocarbyl-substituted cyclopentanes, hydrocarbyl-substituted cyclopentenes, hydrocarbyl-substituted cyclopentadienes, and mixtures or derivatives thereof and, optionally, one or more additives. The lubricant layer also may be used on a magnetic head for reading and writing information on a magnetic recording medium. The magnetic recording medium and the magnetic head may be used to manufacture computer disk drives, compact disk drives, audio equipment, and video equipment.
    Type: Grant
    Filed: October 4, 2001
    Date of Patent: March 27, 2007
    Assignee: Shell Oil Company
    Inventors: Selda Gunsel, Clifford Venier, I-Ching Chiu
  • Publication number: 20060035113
    Abstract: A magnetic recording medium and method for forming the magnetic recording medium are described. The magnetic recording medium includes a magnetic layer formed on a non-magnetic support, and a lubricant layer over the magnetic layer. The lubricant layer includes a compound selected from the group consisting of hydrocarbyl-substituted cyclopentanes, hydrocarbyl-substituted cyclopentenes, hydrocarbyl-substituted cyclopentadienes, and mixtures or derivatives thereof. The lubricant layer also may be used on a magnetic head for reading and writing information on a magnetic recording medium. The magnetic recording medium and the magnetic head may be used to manufacture computer disk drives, compact disk drives, audio equipment, and video equipment.
    Type: Application
    Filed: October 18, 2005
    Publication date: February 16, 2006
    Inventors: Selda Gunsel, Clifford Venier, I-Ching Chiu
  • Publication number: 20040250466
    Abstract: A diesel fuel comprising a mixture of normal paraffins and branched paraffins. The normal paraffins present in the diesel fuel is less than about 99% by weight; and the aromatic content in the diesel fuel is less than about 10% by weight. The diesel fuel has a cetane number of at least 40 and a sulfur content of less than about 100 ppm. Optionally, the diesel fuel may further include cycloparaffins, i.e., naphthenes. To increase the lubricity of the diesel fuel, a lubricity additive, such as fatty acid methyl ester, can be added to the diesel fuel.
    Type: Application
    Filed: March 5, 2004
    Publication date: December 16, 2004
    Inventors: Jaifu Fang, Selda Gunsel
  • Patent number: 6667284
    Abstract: A magnetic recording medium and method for forming the magnetic recording medium are described. The magnetic recording medium includes a magnetic layer formed on a non-magnetic support, and a lubricant layer over the magnetic layer. The lubricant layer includes a compound selected from the group consisting of hydrocarbyl-substituted cyclopentanes, hydrocarbyl-substituted cyclopentenes, hydrocarbyl-substituted cyclopentadienes, and mixtures or derivatives thereof. The lubricant layer also may be used on a magnetic head for reading and writing information on a magnetic recording medium. The magnetic recording medium and the magnetic head may be used to manufacture computer disk drives, compact disk drives, audio equipment, and video equipment.
    Type: Grant
    Filed: March 22, 2001
    Date of Patent: December 23, 2003
    Assignee: Pennzoil-Quaker State Company
    Inventors: Selda Gunsel, Clifford Venier, I-Ching Chiu
  • Publication number: 20030186824
    Abstract: A biodegradable lubricant that is at least 60% biodegradable and has a gelation index of about 12 or less can be formulated using a transesterified triglyceride base oil together with a synthetic ester. A combination of an ester viscosity index improver and an olefin copolymer viscosity index improver also can be added. Further, the composition can be blended with mineral oils to lower the polarity in order to employ standard dispersant/inhibitor packages. Further, by mixing high and low viscosities of mineral oil in the formulation, it is possible to prepare a full range of SAE grade engine oils for gasoline-fueled and diesel-fueled engines.
    Type: Application
    Filed: September 24, 2002
    Publication date: October 2, 2003
    Applicant: Pennzoil-Quaker State Company
    Inventors: I-Ching Chiu, Selda Gunsel, Paul Lacey
  • Publication number: 20030108777
    Abstract: A magnetic recording medium and method for forming the magnetic recording medium are described. The magnetic recording medium includes a magnetic layer formed on a non-magnetic support, and a lubricant layer over the magnetic layer. The lubricant layer includes a compound selected from the group consisting of hydrocarbyl-substituted cyclopentanes, hydrocarbyl-substituted cyclopentenes, hydrocarbyl-substituted cyclopentadienes, and mixtures or derivatives thereof. The lubricant layer also may be used on a magnetic head for reading and writing information on a magnetic recording medium. The magnetic recording medium and the magnetic head may be used to manufacture computer disk drives, compact disk drives, audio equipment, and video equipment.
    Type: Application
    Filed: March 22, 2001
    Publication date: June 12, 2003
    Applicant: Pennzoil-Quaker State Company
    Inventors: Selda Gunsel, Clifford Venier, I-Ching Chiu
  • Publication number: 20020114980
    Abstract: A magnetic recording medium and method for forming the magnetic recording medium are described. The magnetic recording medium includes a magnetic layer formed on a non-magnetic support, and a lubricant layer over the magnetic layer. The lubricant layer includes a compound selected from the group consisting of hydrocarbyl-substituted cyclopentanes, hydrocarbyl-substituted cyclopentenes, hydrocarbyl-substituted cyclopentadienes, and mixtures or derivatives thereof and, optionally, one or more additives. The lubricant layer also may be used on a magnetic head for reading and writing information on a magnetic recording medium. The magnetic recording medium and the magnetic head may be used to manufacture computer disk drives, compact disk drives, audio equipment, and video equipment.
    Type: Application
    Filed: October 4, 2001
    Publication date: August 22, 2002
    Inventors: Selda Gunsel, Clifford Venier, I-Ching Chiu
  • Patent number: 6130190
    Abstract: A lubricating composition comprising a liquid crystal and a surfactant is disclosed. The inventive composition increase the lubricity of lubricant oils, reduce the wear rate or metals being lubricated, and increase the load bearing properties of lubricants between various surfaces, for example, within an engine and in the rolling of metals.
    Type: Grant
    Filed: November 6, 1997
    Date of Patent: October 10, 2000
    Assignee: Pennzoil Products Company
    Inventors: Selda Gunsel, Frances E. Lockwood
  • Patent number: 6074994
    Abstract: Non-aqueous solvent-free lamellar liquid crystalline lubricant compositions containing an organic acid component or a salt thereof and an organic acid component are disclosed.
    Type: Grant
    Filed: February 4, 1997
    Date of Patent: June 13, 2000
    Assignee: Pennzoil Products Company
    Inventors: Selda Gunsel, Fran Lockwood
  • Patent number: 4999122
    Abstract: Non-aqueous lamellar liquid crystalline lubricant compositions comprise an organic acid component or a salt thereof, an organic amine component and a non-aqueous solvent which maintains the liquid crystalline properties of a mixture of the organic acid or salt thereof and the organic amine. The organic acid component is selected from the group consisting of alkyl phosphonic acids, aryl phosphonic acids, alkyl sulfonic acids and aryl sulfonic acids. The weight ratios of the components are such that the compositions exhibit lamellar liquid crystalline properties, the weight ratio of organic acid to organic amine is in the range of about 1:1 to about 5:1 and the solvent comprises not greater than about 75 weight percent of the composition.
    Type: Grant
    Filed: December 30, 1988
    Date of Patent: March 12, 1991
    Assignee: Pennzoil Products Company
    Inventors: Frances E. Lockwood, James G. Lazar, Clarence M. Comer, Selda Gunsel, Stig E. Friberg