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).
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Patent number: 7598426Abstract: 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: GrantFiled: September 6, 2002Date of Patent: October 6, 2009Assignee: Shell Oil CompanyInventors: Jiafu Fang, Selda Gunsel
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Patent number: 7244522Abstract: 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: GrantFiled: October 18, 2005Date of Patent: July 17, 2007Assignee: Shell Oil CompanyInventors: Selda Gunsel, Clifford Venier, I-Ching Chiu
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Patent number: 7195828Abstract: 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: GrantFiled: October 4, 2001Date of Patent: March 27, 2007Assignee: Shell Oil CompanyInventors: Selda Gunsel, Clifford Venier, I-Ching Chiu
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Publication number: 20060035113Abstract: 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: ApplicationFiled: October 18, 2005Publication date: February 16, 2006Inventors: Selda Gunsel, Clifford Venier, I-Ching Chiu
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Publication number: 20040250466Abstract: 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: ApplicationFiled: March 5, 2004Publication date: December 16, 2004Inventors: Jaifu Fang, Selda Gunsel
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Patent number: 6667284Abstract: 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: GrantFiled: March 22, 2001Date of Patent: December 23, 2003Assignee: Pennzoil-Quaker State CompanyInventors: Selda Gunsel, Clifford Venier, I-Ching Chiu
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Publication number: 20030186824Abstract: 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: ApplicationFiled: September 24, 2002Publication date: October 2, 2003Applicant: Pennzoil-Quaker State CompanyInventors: I-Ching Chiu, Selda Gunsel, Paul Lacey
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Publication number: 20030108777Abstract: 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: ApplicationFiled: March 22, 2001Publication date: June 12, 2003Applicant: Pennzoil-Quaker State CompanyInventors: Selda Gunsel, Clifford Venier, I-Ching Chiu
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Publication number: 20020114980Abstract: 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: ApplicationFiled: October 4, 2001Publication date: August 22, 2002Inventors: Selda Gunsel, Clifford Venier, I-Ching Chiu
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Patent number: 6130190Abstract: 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: GrantFiled: November 6, 1997Date of Patent: October 10, 2000Assignee: Pennzoil Products CompanyInventors: Selda Gunsel, Frances E. Lockwood
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Patent number: 6074994Abstract: 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: GrantFiled: February 4, 1997Date of Patent: June 13, 2000Assignee: Pennzoil Products CompanyInventors: Selda Gunsel, Fran Lockwood
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Patent number: 4999122Abstract: 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: GrantFiled: December 30, 1988Date of Patent: March 12, 1991Assignee: Pennzoil Products CompanyInventors: Frances E. Lockwood, James G. Lazar, Clarence M. Comer, Selda Gunsel, Stig E. Friberg