Patents by Inventor Phuong Van Luu
Phuong Van Luu 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: 6193838Abstract: A one-ply paper tissue product and a method of making a one-ply paper product combining high strength and softness along with low sidedness. The paper tissue product exhibits a sidedness parameter of less than 0.3 preferably, less than 0.225, a tensile modulus of no more than 32 grams/percent strain, a GM MMD of no more than about 0.225, and a cross directional strength of at least 200 grams per 3 inches. In stratification tissues, these properties are obtained by control of stratification, particularly, chemical stratification and stratification of furnish when appropriate. The tissue has a sidedness parameter value of less than 0.3, preferably, about 0.15 to about less than 0.225. In homogenous tissue, these properties are obtained by adding a strength enhancing agent to separate furnish sources prior to the funish sources being combined, and further, optionally adding the softener to the nascent web.Type: GrantFiled: July 1, 1999Date of Patent: February 27, 2001Assignee: Fort James CorporationInventors: T. Philips Oriaran, Frank D. Harper, Anthony O. Awofeso, Cristian M. Neculescu, Phuong Van Luu, Thomas N. Kershaw, Galyn A. Schulz
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Patent number: 6183599Abstract: The present invention is a method of manufacturing a one-ply absorbent paper product such as a bathroom tissue. The tissue combines high strength and softness along with low sidedness. The paper product is produced as a stratified product using furnishes supplied from different headboxes. The paper is manufactured as a wet pressed, creped product. The paper tissue product made by the process of this invention exhibits a sidedness parameter of less than 0.3 preferably, less than 0.225, a tensile modulus of no more than 32 grams/percent strain, a GM MMD of no more than about 0.225, and a cross direction strength of at least 200 grams per 3 inches.Type: GrantFiled: July 1, 1999Date of Patent: February 6, 2001Assignee: Fort James CorporationInventors: T. Philips Oriaran, Frank D. Harper, Anthony O. Awofeso, Cristian M. Neculescu, Phuong Van Luu, Thomas N. Kershaw, Galyn A. Schulz
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Patent number: 6113740Abstract: A one-ply paper tissue product and a method of making a one-ply paper product combining high strength and softness along with low sidedness. The paper tissue product exhibits a sidedness parameter of less than 0.3 preferably, less than 0.225, a tensile modulus of no more than 32 grams/percent strain, a GM MMD of no more than about 0.225, and a cross directional strength of at least 200 grams per 3 inches. In stratification tissues, these properties are obtained by control of stratification, particularly, chemical stratification and stratification of furnish when appropriate. The tissue has a sidedness parameter value of less than 0.3, preferably, about 0.15 to about less than 0.225. In homogenous tissue, these properties are obtained by adding a strength enhancing agent to separate furnish sources prior to the funish sources being combined, and further, optionally adding the softener to the nascent web.Type: GrantFiled: July 1, 1999Date of Patent: September 5, 2000Assignee: Fort James CorporationInventors: T. Philips Oriaran, Frank D. Harper, Anthony O. Awofeso, Cristian M. Neculescu, Phuong Van Luu, Thomas N. Kershaw, Galyn A. Schulz
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Patent number: 6103063Abstract: A one-ply paper tissue product and a method of making a one-ply paper product combining high strength and softness along with low sidedness. The paper tissue product exhibits a sidedness parameter of less than 0.3 preferably, less than 0.225, a tensile modulus of no more than 32 grams/percent strain, a GM MMD of no more than about 0.225, and a cross directional strength of at least 200 grams per 3 inches. In stratification tissues, these properties are obtained by control of stratification, particularly, chemical stratification and stratification of furnish when appropriate. The tissue has a sidedness parameter value of less than 0.3, preferably, about 0.15 to about less than 0.225. In homogenous tissue, these properties are obtained by adding a strength enhancing agent to separate furnish sources prior to the funish sources being combined, and further, optionally adding the softener to the nascent web.Type: GrantFiled: July 1, 1999Date of Patent: August 15, 2000Assignee: Fort James CorporationInventors: T. Philips Oriaran, Frank D. Harper, Anthony O. Awofeso, Christian M. Neculescu, Phuong Van Luu, Thomas N. Kershaw, Galyn A. Schulz
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Patent number: 6059928Abstract: A paper product and a method of making a paper product with a glabrous surface and adapted for use either dry or for use in a manually pre-moistened condition. The paper product having temporary wet strength exhibiting an initial normalized CD wet tensile strength of at least about 75 g/3 inch strip, preferably 105 g/3 inch strip as measured by the Finch Cup Test 5 seconds after immersion and a subsequent CD wet strength of less than 1/2 as measured 10 minutes after immersion. A temporary wet strength agent comprising uncharged chemical moieties such as aldehydes, and aldehydes containing polymers, polyols and cyclic ureas or mixtures thereof in the range of from about 2 pounds per ton to about 30 pounds per ton is added to the web. Optionally starch and a cationic nitrogenous softener/debonder is added. The starch and softener/debonder are added to assist in tailor making the desired paper product having temporary wet strength.Type: GrantFiled: September 18, 1995Date of Patent: May 9, 2000Assignee: Fort James CorporationInventors: Phuong Van Luu, Gary Worry, Robert J. Marinack, Henry S. Ostrowski, Dinesh M. Bhat
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Patent number: 6051104Abstract: A one-ply paper tissue product and a method of making a one-ply paper product combining high strength and softness along with low sidedness. The paper tissue product exhibits a sidedness parameter of less than 0.3 preferably, less than 0.225, a tensile modulus of no more than 32 grams/percent strain, a GM MMD of no more than about 0.225, and a cross directional strength of at least 200 grams per 3 inches. In stratification tissues, these properties are obtained by control of stratification, particularly, chemical stratification and stratification of furnish when appropriate. The tissue has a sidedness parameter value of less than 0.3, preferably, about 0.15 to about less than 0.225. In homogenous tissue, these properties are obtained by adding a strength enhancing agent to separate furnish sources prior to the funish sources being combined, and further, optionally adding the softener to the nascent web.Type: GrantFiled: August 13, 1997Date of Patent: April 18, 2000Assignee: Fort James CorporationInventors: T. Philips Oriaran, Frank D. Harper, Anthony O. Awofeso, Cristian M. Neculescu, Phuong Van Luu, Thomas N. Kershaw, Galyn A. Schulz
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Patent number: 5981645Abstract: A creping adhesive is described which provides the ability to readily control glass transition temperature (Tg) and adhesion and which can be easily removed from dryer surfaces. The creping adhesive contains a crosslinkable polymer and preferably an ionic crosslinking agent such as metal cations having a valence of three or more.Type: GrantFiled: September 22, 1994Date of Patent: November 9, 1999Assignee: James River Corporation of VirginiaInventors: David Henry Hollenberg, Phuong Van Luu, Stephen Risley Collins
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Patent number: 5961782Abstract: Disclosed are adhesive formulations as creping process aids for producing an absorbent creped cellulosic sheet having a high level of surface-perceived softness that comprises continuously forming a web of cellulosic papermaking fibers, adhering said web to a thermal drying means by means of adhesive compositions comprising polymers having at least one primary or secondary amine group in the backbone such as chitosan, polyvinylamine, polyvinyl alcohol-vinyl amine and polyaminoamide in combination with crosslinking agents such as dialdehydes or zirconium compounds having a valence of plus four including ammonium zirconium carbonate, zirconium acetylacetonate, zirconium acetate, zirconium carbonate, zirconium sulfate, zirconium phosphate, potassium zirconium carbonate, zirconium sodium phosphate and sodium zirconium tartrate and creping said treated web from said thermal drying means.Type: GrantFiled: April 4, 1997Date of Patent: October 5, 1999Assignee: Fort James CorporationInventors: Phuong Van Luu, Cristian M. Neculescu, Dawn M. Mews
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Patent number: 5882479Abstract: A one-ply paper tissue product and a method of making a one-ply paper product combining high strength and softness along with low sidedness. The paper tissue product exhibits a sidedness parameter of less than 0.3 preferably, less than 0.225, a tensile modulus of no more than 32 grams/percent strain, a GM MMD of no more than about 0.225, and a cross directional strength of at least 200 grams per 3 inches. In stratification tissues, these properties are obtained by control of stratification, particularly, chemical stratification and stratification of furnish when appropriate. The tissue has a sidedness parameter value of less than 0.3, preferably, about 0.15 to about less than 0.225. In homogenous tissue, these properties are obtained by adding a strength enhancing agent to separate furnish sources prior to the funish sources being combined, and further, optionally adding the softener to the nascent web.Type: GrantFiled: August 13, 1997Date of Patent: March 16, 1999Assignee: Fort James CorporationInventors: T. Philips Oriaran, Frank D. Harper, Anthony O. Awofeso, Cristian M. Neculescu, Phuong Van Luu, Thomas N. Kershaw, Galyn A. Schulz
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Patent number: 5851629Abstract: A one-ply paper tissue product and a method of making a one-ply paper product combining high strength and softness along with low sidedness. The paper tissue product exhibits a sidedness parameter of less than 0.3 preferably, less than 0.225, a tensile modulus of no more than 32 grams/percent strain, a GM MMD of no more than about 0.225, and a cross directional strength of at least 200 grams per 3 inches. In stratification tissues, these properties are obtained by control of stratification, particularly, chemical stratification and stratification of furnish when appropriate. The tissue has a sidedness parameter value of less than 0.3, preferably, about 0.15 to about less than 0.225. In homogenous tissue, these properties are obtained by adding a strength enhancing agent to separate furnish sources prior to the funish sources being combined, and further, optionally adding the softener to the nascent web.Type: GrantFiled: August 13, 1997Date of Patent: December 22, 1998Assignee: Fort James CorporationInventors: T. Philips Oriaran, Frank D. Harper, Anthony O. Awofeso, Cristian M. Neculescu, Phuong Van Luu, Thomas N. Kershaw, Galyn A. Schulz
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Patent number: 5695607Abstract: A one-ply paper tissue product and a method of making a one-ply paper product combining high strength and softness along with low sidedness. The paper tissue product exhibits a sidedness parameter of less than 0.3 preferably, less than 0.225, a tensile modulus of no more than 32 grams/percent strain, a GM MMD of no more than about 0.225, and a cross directional strength of at least 200 grams per 3 inches. In stratification tissues, these properties are obtained by control of stratification, particularly, chemical stratification and stratification of furnish when appropriate. The tissue has a sidedness parameter value of less than 0.3, preferably, about 0.15 to about less than 0.225. In homogenous tissue, these properties are obtained by adding a strength enhancing agent to separate furnish sources prior to the funish sources being combined, and further, optionally adding the softener to the nascent web.Type: GrantFiled: April 1, 1994Date of Patent: December 9, 1997Assignee: James River Corporation of VirginiaInventors: T. Philips Oriaran, Frank D. Harper, Anthony O. Awofeso, Cristian M. Neculescu, Phuong Van Luu, Thomas N. Kershaw, Galyn A. Schulz
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Patent number: 5246544Abstract: A creping adhesive is described which provides the ability to readily control glass transition temperature (Tg) and adhesion and which can be easily removed from dryer surfaces. The creping adhesive contains a crosslinkable polymer and preferably an ionic crosslinking agent such as metal cations having a valence of three or more.Type: GrantFiled: June 15, 1992Date of Patent: September 21, 1993Assignee: James River Corporation of VirginiaInventors: David H. Hollenberg, Phuong Van Luu, Stephen R. Collins
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Patent number: 5179150Abstract: Improved creping compositions comprising glyoxylated vinylamide polymers in combination with polyvinyl alcohol are disclosed.Type: GrantFiled: October 7, 1991Date of Patent: January 12, 1993Assignee: Nalco Chemical CompanyInventors: Gary S. Furman, Jr., Craig Gruen, Phuong Van Luu