Patents by Inventor I-Ching Chiu

I-Ching Chiu 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: 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: 20040242441
    Abstract: A continuously variable transmission fluid comprises a hydrogenated cyclic dimer of &agr;-alkyl styrene and a low temperature viscosity control agent. The fluid does not contain more than 20 wt. % of a linear dimer of the &agr;-alkyl styrene, and the fluid has a kinematic viscosity of greater than about 2.5×10−6 m2/s at 100° C., as measured according to ASTM D-445. The dimerized &agr;-alkyl styrene can be made by (a) contacting an &agr;-alkyl styrene with a supported acid catalyst to effect oligomerization of the &agr;-alkyl styrene to a cyclic dimer; and (b) hydrogenating the cyclic dimer in the presence of a hydrogenation catalyst to produce a fully hydrogenated cyclic dimer, wherein the &agr;-alkyl styrene is contacted with the supported acid catalyst in the absence of a solvent for the &agr;-alkyl styrene and a free acid.
    Type: Application
    Filed: September 24, 2003
    Publication date: December 2, 2004
    Applicant: Pennzoil-Quaker State Company
    Inventor: I-Ching Chiu
  • Patent number: 6730818
    Abstract: A novel series of copolymers and terpolymers, useful as base oils for synthetic lubricants, are produced by polymerization of ethylene, an alpha-olefin, and optionally a third monomer comprising an alpha-olefin of 3 to 20 carbon atoms, in the presence of a combination catalyst comprising a compound of a transition metal of Group IVb of the Periodic Table and an aluminoxane. The copolymer or terpolymer may be further processed by thermal cracking to yield novel cracked polymers, and the cracked polymers may be hydrogenated. The copolymers or terpolymers may also be hydroisomerized. All the polymers are useful as base oils for lubricating oils and consumer products.
    Type: Grant
    Filed: May 22, 2002
    Date of Patent: May 4, 2004
    Assignee: Penzoil-Quaker State Company
    Inventors: William J. Heilman, I-Ching Chiu, James C. W. Chien
  • 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
  • Patent number: 6586646
    Abstract: Various vinylidene-containing polymers are obtained in the presence of a single-site catalyst. For example, the polymers include ethylene/isobutene copolymer, ethylene/propylene/isobutene terpolymer, ethylene/styrene/isobutene terpolymer, ethylene/&agr;-methyl-styrene/isobutene terpolymer, propylene/isobutene copolymer, styrene/isobutene copolymer, and &agr;-methyl-styrene/isobutene copolymer. These polymers may be used to formulate lubricant oils.
    Type: Grant
    Filed: November 24, 1999
    Date of Patent: July 1, 2003
    Assignee: Pennzoil-Quaker State Company
    Inventors: William J. Heilman, I-Ching Chiu, Wei Song, James C. W. Chien
  • 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: 20020193647
    Abstract: A novel series of copolymers and terpolymers, useful as base oils for synthetic lubricants, are produced by polymerization of ethylene, an alpha-olefin, and optionally a third monomer comprising an alpha-olefin of 3 to 20 carbon atoms, in the presence of a combination catalyst comprising a compound of a transition metal of Group IVb of the Periodic Table and an aluminoxane. The copolymer or terpolymer may be further processed by thermal cracking to yield novel cracked polymers, and the cracked polymers may be hydrogenated. The copolymers or terpolymers may also be hydroisomerized. All the polymers are useful as base oils for lubricating oils and consumer products.
    Type: Application
    Filed: May 22, 2002
    Publication date: December 19, 2002
    Applicant: Pennzoil-Quaker State Company
    Inventors: William J. Heilman, I-Ching Chiu, James C. W. Chien
  • 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: 6417416
    Abstract: A novel series of copolymers and terpolymers, useful as base oils for synthetic lubricants, are produced by polymerization of ethylene, an alpha-olefin, and optionally a third monomer comprising an alpha-olefin of 3 to 20 carbon atoms, in the presence of a combination catalyst comprising a compound of a transition metal of Group IVb of the Periodic Table and an aluminoxane. The copolymer or terpolymer may be further processed by thermal cracking to yield novel cracked polymers, and the cracked polymers may be hydrogenated. The copolymers or terpolymers may also be hydroisomerized. All the polymers are useful as base oils for lubricating oils and consumer products.
    Type: Grant
    Filed: June 19, 2000
    Date of Patent: July 9, 2002
    Assignee: Pennzoil-Quaker State Company
    Inventors: William J. Heilman, I-Ching Chiu, James C. W. Chien
  • Patent number: 6388148
    Abstract: A novel series of copolymers and terpolymers, useful as base oils for synthetic lubricants, are produced by polymerization of ethylene, an alpha-olefin, and optionally a third monomer comprising an alpha-olefin of 3 to 20 carbon atoms, in the presence of a combination catalyst comprising a compound of a transition metal of Group IVb of the Periodic Table and an aluminoxane. The copolymer or terpolymer may be further processed by thermal cracking to yield novel cracked polymers, and the cracked polymers may be hydrogenated. The copolymers or terpolymers may also be hydroisomerized. All the polymers are useful as base oils for lubricating oils and consumer products.
    Type: Grant
    Filed: March 7, 2001
    Date of Patent: May 14, 2002
    Assignee: Pennzoil-Quaker State Company
    Inventors: William Heilmann, I-Ching Chiu, James C. W. Chien
  • Publication number: 20010044562
    Abstract: A novel series of copolymers and terpolymers, useful as base oils for synthetic lubricants, are produced by polymerization of ethylene, an alpha-olefin, and optionally a third monomer comprising an alpha-olefin of 3 to 20 carbon atoms, in the presence of a combination catalyst comprising a compound of a transition metal of Group IVb of the Periodic Table and an aluminoxane. The copolymer or terpolymer may be further processed by thermal cracking to yield novel cracked polymers, and the cracked polymers may be hydrogenated. The copolymers or terpolymers may also be hydroisomerized. All the polymers are useful as base oils for lubricating oils and consumer products.
    Type: Application
    Filed: March 7, 2001
    Publication date: November 22, 2001
    Applicant: Pennzoil-Quaker State Company
    Inventors: William J. Heilman, I-Ching Chiu, James C.W. Chien
  • Patent number: 6262324
    Abstract: A novel series of copolymers and terpolymers, useful as base oils for synthetic lubricants, are produced by polymerization of ethylene, an alpha-olefin, and optionally a third monomer comprising an alpha-olefin of 3 to 20 carbon atoms, in the presence of a combination catalyst comprising a compound of a transition metal of Group IVb of the Periodic Table and an aluminoxane. The copolymer or terpolymer may be further processed by thermal cracking to yield novel cracked polymers, and the cracked polymers may be hydrogenated. The copolymers or terpolymers may also be hydroisomerized. All the polymers are useful as base oils for lubricating oils and consumer products.
    Type: Grant
    Filed: May 7, 1999
    Date of Patent: July 17, 2001
    Assignee: Pennzoil-Quaker State Company
    Inventors: William Heilmann, I-Ching Chiu, James C. W. Chien
  • Patent number: 6124513
    Abstract: A novel series of copolymers and terpolymers, usefull as base oils for synthetic lubricants, are produced by polymerization of ethylene, an alpha-olefin, and optionally a third monomer comprising an alpha-olefin of 3 to 20 carbon atoms, in the presence of a combination catalyst comprising a compound of a transition metal of Group IVb of the Periodic Table and an aluminoxane. The copolymer or terpolymer may be further processed by thermal cracking to yield novel cracked polymers, and the cracked polymers may be hydrogenated. The copolymers or terpolymers may also be hydroisomerized. All the polymers are useful as base oils for lubricating oils and consumer products.
    Type: Grant
    Filed: June 20, 1997
    Date of Patent: September 26, 2000
    Assignee: Pennzoil-Quaker State Company
    Inventors: William J. Heilman, I-Ching Chiu, James C. W. Chien
  • Patent number: 5672727
    Abstract: An alkyl dithiocarbamoyl alkanol that has the formula ##STR1## wherein Z is H or OH, Y is N, X is S, R.sup.1 and R.sup.2 are, selected from the group consisting of H and (C.sub.1 -C.sub.40)hydrocarbon residues R.sup.3, R.sup.4, R.sup.5, R.sup.6 and R.sup.7 are selected from the group consisting of H and (C.sub.1 -C.sub.8)hydrocarbon residues, n is 0 to 4, is an intermediate to prepare a borate ester having the formula ##STR2## The borate esters are anti-wear/anti-oxidant/anti-friction/anti-rust additives for lubricating oil.
    Type: Grant
    Filed: June 20, 1996
    Date of Patent: September 30, 1997
    Assignee: Pennzoil Products Company
    Inventor: I-Ching Chiu
  • Patent number: 5560853
    Abstract: A borate ester having the formula ##STR1## wherein Y is N, S or O, X is O or S, R.sup.1 and R.sup.2 are, independent of one another, selected from the group consisting of H, (C.sub.1 -C.sub.40)hydrocarbon residues and (C.sub.3 -C.sub.50)cycloalkyl, aryl and aralkyl, each of which may further contain N, O or S, R.sup.3, R.sup.4, R.sup.5, R.sup.6 and R.sup.7 are independent of one another, selected from the group consisting of H and (C.sub.1 -C.sub.8)hydrocarbon residues, n is 0 to 4. An anti-wear/anti-oxidant/anti-friction/anti-rust additive comprises the borate ester of the invention when added to a lubricating oil.
    Type: Grant
    Filed: March 13, 1992
    Date of Patent: October 1, 1996
    Assignee: Pennzoil Products Company
    Inventor: I-Ching Chiu
  • Patent number: 5319144
    Abstract: Thiobisphenols of the formula: ##STR1## wherein X is 1, 2, 3 or 4 and R.sub.1 and R.sub.2 are straight or branch-chained alkyl group of 1 to 10 carbon atoms, which are useful as antiodiants and synergists for antioxidants, are prepared by reaction of a 2,6-dialkylphenol with an excess of sulfur in a solvent comprising a mixture of an alcohol and water wherein the solvent contains from 10 to 50 wt. % of water.
    Type: Grant
    Filed: July 28, 1993
    Date of Patent: June 7, 1994
    Assignee: Pennzoil Products Company
    Inventor: I. Ching Chiu
  • Patent number: 4873370
    Abstract: N,N-dialkyl-N'-(beta substituted) alkyl alkylene diamines of the formula ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 are C.sub.1-4 hydrocarbon groups or H, but both R.sub.1 and R.sub.2 are not H, R.sub.4 is a saturated or unsaturated C.sub.14-24 hydrocarbon group, n=1-4 and X is OH or SH are adapted for use as friction and wear reducing additives in friction and wear reducing compositions.
    Type: Grant
    Filed: March 3, 1987
    Date of Patent: October 10, 1989
    Assignee: Pennzoil Products Company
    Inventor: I-Ching Chiu