Patents by Inventor Kuo-Shu Edward Chang
Kuo-Shu Edward Chang 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: 7704243Abstract: A leg wrap structure is provided in a disposable absorbent garment such as a diaper or training pants. The leg wrap structure has a base layer, a top layer, and an elastic construction disposed therebetween. The elastic construction includes a plurality of spaced apart (e.g. generally equally spaced apart) elastic elements (e.g. strands or threads) that are aligned in a generally in generally parallel relation. Further, the top and base layers define a region of inelasticity. The leg wrap structure provides for the efficient formation of a reservoir and a plurality of fluid dams each capable of capturing a quantity of fluid to minimize the occurrence of fluid leaks from the absorbent article. Methods of forming such absorbent articles are disclosed.Type: GrantFiled: December 6, 2005Date of Patent: April 27, 2010Assignee: DSG Technology Holdings Ltd.Inventors: Kuo-Shu Edward Chang, Anne Smid, Patrick King Yu Tsang, Ian Walker, Andrew Wright
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Publication number: 20090124991Abstract: A secondary internal topsheet and leg wrap structure is provided in a disposable absorbent garment such as a diaper or training pants. The leg wrap structure has a base layer, a top layer, and an elastic construction disposed inbetween. The elastic construction includes a plurality of spaced apart elastic elements that are aligned in a generally in generally parallel relation. The leg wrap structure and secondary topsheet provides for the efficient formation of a reservoir and a plurality of fluid dams each capable of capturing a quantity of fluid to minimize the occurrence of fluid leaks from the absorbent article. Methods of forming such absorbent articles are disclosed.Type: ApplicationFiled: May 8, 2008Publication date: May 14, 2009Inventors: Patrick King Yu Tsang, Andrew Wright, Ian Walker, Kuo-Shu Edward Chang, Chang-Hwa Grace Ho
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Publication number: 20090124992Abstract: An elastic composite is provided in a disposable absorbent garment such as a diaper or training pants. The elastic composite has a base layer, a top layer, and an elastic construction disposed therebetween. The elastic construction includes a plurality of spaced apart (e.g. generally equally spaced apart) elastic elements (e.g. strands or threads) that are aligned in a generally cross machine direction and in generally parallel relation. Further, the top and base layers define a first longitudinally extending side edge and a second longitudinally extending side edge between which, the elastic construction is disposed. The elastic composite further includes an elasticized region, wherein the elastic construction is disposed, a first non-elasticized region disposed between the first side edge and the elasticized region, and a second non-elasticized region disposed between the second side edge and the elasticized region.Type: ApplicationFiled: October 24, 2008Publication date: May 14, 2009Applicant: DSG Technology Holdings, LtdInventors: Andrew Christopher Wright, Kuo-Shu Edward Chang, Patrick King Yu Tsang, Anne Smid
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Patent number: 7462172Abstract: An elastic composite is provided in a disposable absorbent garment such as a diaper or training pants. The elastic composite has a base layer, a top layer, and an elastic construction disposed therebetween. The elastic construction includes a plurality of spaced apart (e.g. generally equally spaced apart) elastic elements (e.g. strands or threads) that are aligned in a generally cross machine direction and in generally parallel relation. Further, the top and base layers define a first longitudinally extending side edge and a second longitudinally extending side edge between which, the elastic construction is disposed. The elastic composite further includes an elasticized region, wherein the elastic construction is disposed, a first non-elasticized region disposed between the first side edge and the elasticized region, and a second non-elasticized region disposed between the second side edge and the elasticized region.Type: GrantFiled: December 11, 2003Date of Patent: December 9, 2008Assignee: DSG Technology Holdings Ltd.Inventors: Andrew Christopher Wright, Kuo-Shu Edward Chang, Patrick King Yu Tsang, Anne Smid
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Publication number: 20080176026Abstract: A method is provided for making an elastic composite for incorporation into a disposable absorbent garment. An elastic element applicator is provided that is configured to move a section of a continuous strand of elastic element generally about a plane. A first web of material is conveyed in a first web moving direction such that the first web intersects the plane. Then, the applicator is operated to move the elastic element about the plane, thereby applying the section of elastic element onto the first web along a direction generally transverse to the web moving direction and such that the first web draws the continuous elastic strand from the elastic element applicator as the first web is conveyed away from the plane. The elastic element applicator may be in the form of a spin cylinder or bracket that is operated to spin the elastic element about the moving first web, thereby applying the elastic element on the first web.Type: ApplicationFiled: October 31, 2007Publication date: July 24, 2008Applicant: DSG Technology Holdings Ltd.Inventors: Kuo-Shu Edward Chang, Anne Smid, Patrick King Yu Tsang, Andrew C. Wright
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Patent number: 7361246Abstract: A method is provided for making an elastic composite for incorporation into a disposable absorbent garment. An elastic element applicator is provided that is configured to move a section of a continuous strand of elastic element generally about a plane. A first web of material is conveyed in a first web moving direction such that the first web intersects the plane. Then, the applicator is operated to move the elastic element about the plane, thereby applying the section of elastic element onto the first web along a direction generally transverse to the web moving direction and such that the first web draws the continuous elastic strand from the elastic element applicator as the first web is conveyed away from the plane. The elastic element applicator may be in the form of a spin cylinder or bracket that is operated to spin the elastic element about the moving first web, thereby applying the elastic element on the first web.Type: GrantFiled: December 23, 2004Date of Patent: April 22, 2008Assignee: DSG Technology Holdings Ltd.Inventors: Kuo-Shu Edward Chang, Anne Smid, Patrick King Yu Tsang, Andrew C. Wright
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Patent number: 6838154Abstract: There is provided a resilient, three dimensional material having fibrous texture and appearance and capable of fluid handling. It consists of a top surface and a bottom surface wherein fiber-like elements typically extend from one surface to the other forming flat to undulating surfaces characterized by a multiplicity of interconnected fluid passageways. Deformed, discontinuous film-like or encapsulated regions connect fiber-like elements and stabilize the material. The material of this invention is unique based on the three principle characteristics which are communicated in this application: 1) ff(?)<0.87, 2) SA/VV<186 cm2/cm3, and 3) caliper<0.150 inches. This material is useful for a number of purposes, such as for use as a liner for personal care products like diapers, absorbent underpants, swim wear, feminine hygiene products, adult incontinence products and the like.Type: GrantFiled: December 9, 1998Date of Patent: January 4, 2005Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Eugenio Go Varona, Monica Lynn Bontrager, Jaime Braverman, Kuo-Shu Edward Chang, Michael Allen Daley, Karen Lynn English, Arthur Edward Garavaglia, Hristo Angelov Hristov, Nancy Donaldson Kollin, Tamara Lee Mace, David Michael Matela, Sharon Rymer, Reginald Smith, Roland Columbus Smith, Jr., Michael Donald Sperl
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Patent number: 6738735Abstract: A method is disclosed for determining the efficiency of an absorbent article having first and second absorbent layers. The method comprises the steps of selecting a density for the first absorbent layer and for the second absorbent layer. A basis weight for each of the first and second absorbent layers is selected which is at least about 100 grams per square meter. A desired percentage of a superabsorbent to be present in each of the first and second absorbent layers is also selected. The percentage of a superabsorbent present in the first absorbent layer is greater than the percentage of a superabsorbent present in the second absorbent layer.Type: GrantFiled: July 7, 2000Date of Patent: May 18, 2004Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Earle Harry Sherrod, Kuo-Shu Edward Chang, Billie Jean Matthews
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Patent number: 6735833Abstract: The present invention is directed to a method of forming a nonwoven fabric, which exhibits a pronounced three-dimensional image that is durable to both converting and end-use application. In particular, the present invention contemplates that a fabric is formed from a precursor web comprising at least one support layer or scrim, which when subjected to hydroentanglement on a moveable imaging surface of a three-dimensional image transfer device, an enhanced product is achieved. By formation in this fashion, hydroentanglement of the precursor web results in a more pronounced three-dimensional image; an image that is durable to abrasion and distortion due to elongation.Type: GrantFiled: December 17, 2002Date of Patent: May 18, 2004Assignee: Polymer Group, Inc.Inventors: Michael Putnam, Ralph A. Moody, III, Keith Wilbourn, Kuo-Shu Edward Chang, Douglas Stowers
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Patent number: 6710225Abstract: Absorbent article including an absorbent core having multiple absorbent layers. The absorbent layers interact in a manner which desirably locates absorbed liquid in an appointed, high saturation wicking layer.Type: GrantFiled: March 3, 2000Date of Patent: March 23, 2004Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Rob David Everett, Thomas Gerald Bolwerk, Richard Norris Dodge, II, Violet May Grube, Yong Li, Debra Jean McDowall, Shannon Kathleen Melius, Lawrence Howell Sawyer, David Louis Zenker, Xiaomin Zhang, Sylvia Bandy Little, Billie Jean Matthews, Sridhar Ranganathan, Stanley Michael Gryskiewicz, Kuo-Shu Edward Chang
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Publication number: 20030137076Abstract: The present invention is directed to the combined use of a dispersant as an internal melt additive and a surfactant as an outer topical additive to impart or improve the wettability of extruded thermoplastic constructs. A dispersant is provided to, and blended with, a thermoplastic polymer which is then formed into a thermoplastic construct. A surfactant is then applied to the thermoplastic construct to impart or improve the wettability of the thermoplastic construct.Type: ApplicationFiled: November 15, 2002Publication date: July 24, 2003Applicant: Polymer Group, Inc.Inventors: Valeria Griep Erdos, Errette Bevins,, Kuo-Shu Edward Chang
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Publication number: 20030135967Abstract: The present invention is directed to a method of forming a nonwoven fabric, which exhibits a pronounced three-dimensional image that is durable to both converting and end-use application. In particular, the present invention contemplates that a fabric is formed from a precursor web comprising at least one support layer or scrim, which when subjected to hydroentanglement on a moveable imaging surface of a three-dimensional image transfer device, an enhanced product is achieved. By formation in this fashion, hydroentanglement of the precursor web results in a more pronounced three-dimensional image; an image that is durable to abrasion and distortion due to elongation.Type: ApplicationFiled: December 17, 2002Publication date: July 24, 2003Inventors: Michael Putnam, Ralph A. Moody, Keith Wilbourn, Kuo-Shu Edward Chang, Douglas Stowers
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Publication number: 20030013371Abstract: A method of making a spunbond nonwoven fabric embodying the principles of the present invention contemplates use of an aliphatic-aromatic polyester resin, such as Eastar BioGP, for formation of fabrics which exhibit desirable softness and drapeability characteristics, excellent gamma-radiation stability and, where required, desirable elasticity. In distinction from previous formation techniques, the present invention contemplates formation of such fabrics by spunbonding at relatively low filament spinning speeds, thus facilitating practice of the present invention with generally available and conventional spunbonding equipment.Type: ApplicationFiled: April 19, 2002Publication date: January 16, 2003Applicant: Polymer Group, Inc.Inventors: Kyra Dorsey, Keith Wilbourn, Kuo-Shu Edward Chang, John Charles Norton, Valeria Griep Erdos
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Publication number: 20020187700Abstract: Bonded fluff structures and a method for producing such bonded fluff structures in which a pulp sheet having a material suitable for producing fluff and a heat activatable fiber material is fiberized to produce a mixture of fluff and heat activatable fibers. The mixture is contacted with a hot air stream, heating the heat activatable fibers to an activation temperature. The resulting heated mixture is then deposited onto a forming structure, forming a bonded fluff/fiber composite matrix structure.Type: ApplicationFiled: May 17, 2002Publication date: December 12, 2002Inventors: Stanley Michael Gryskiewicz, David Martin Jackson, Jason Douglas Hadley, Jerome Joseph Schwalen, Frank Paul Abuto, Kuo-Shu Edward Chang, Susan Carol Paul, Richard John Schmidt
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Patent number: 6465712Abstract: There is provided an absorbent system for personal care products which may be transversely divided into about an equally sized center zone, two intermediate zones and two end zones where the ratio of the amount of liquid stored in the center zone to the amount of liquid stored in at least one of the end zones 30 minutes each of three insults of 80 ml according to a MIST Evaluation Test after less than 5:1. Such an absorbent system may be used in personal care products like diapers, training pants, feminine hygiene products, absorbent underpants, adult incontinence products, and the like.Type: GrantFiled: August 3, 2000Date of Patent: October 15, 2002Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Billie Jean Matthews, Richard Allen Anderson, Andrew Scott Burnes, Kuo-Shu Edward Chang, Richard Norris Dodge, II, Stanley Michael Gryskiewicz, Connie Lynn Hetzler, Margaret Gwyn Latimer, Yong Li, Sylvia Bandy Little, Tamara Lee Mace, James Brian Riddle, Lawrence Howell Sawyer, Eugenio Go Varona, Hoa La Wilhelm
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Patent number: 6419865Abstract: Bonded fluff structures and a method for producing such bonded fluff structures in which a pulp sheet having a material suitable for producing fluff and a heat activatable fiber material is fiberized to produce a mixture of fluff and heat activatable fibers. The mixture is contacted with a hot air stream, heating the heat activatable fibers to an activation temperature. The resulting heated mixture is then deposited onto a forming structure, forming a bonded fluff/fiber composite matrix structure.Type: GrantFiled: September 30, 1997Date of Patent: July 16, 2002Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Stanley Michael Gryskiewicz, David Martin Jackson, Jason Douglas Hadley, Jerome Joseph Schwalen, Frank Paul Abuto, Kuo-Shu Edward Chang, Susan Carol Paul, Richard John Schmidt
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Patent number: 6383960Abstract: A distinctive absorbent article includes an absorbent core having multiple absorbent layers, wherein the absorbent layers interact in such a manner which preferentially locates absorbed liquid in an appointed, high saturation wicking layer. The localization of the liquid within this wicking layer increases the potential of this layer to move liquid through capillary action due to the higher saturation level and increased amount of liquid available. The intake capability of the absorbent system is maintained or improved over current systems by keeping a second layer of the absorbent system at low saturation levels through as many insults of the product as possible, while providing optimum intake performance through appropriate control of the composite properties.Type: GrantFiled: March 3, 2000Date of Patent: May 7, 2002Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Rob David Everett, Thomas Gerald Bolwerk, Richard Norris Dodge, II, Violet May Grube, Yong Li, Debra Jean McDowall, Shannon Kathleen Melius, Lawrence Howell Sawyer, David Louis Zenker, Xiaomin Zhang, Sylvia Bandy Little, Billie Jean Matthews, Sridhar Ranganathan, Stanley Michael Gryskiewicz, Kuo-Shu Edward Chang
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Patent number: 6248097Abstract: An absorbent article (10) which includes a backsheet layer (30) having a pair of laterally opposed and longitudinally extending side margins (20). Each side margin has an outwardly concave, terminal side edge contour 15 located at appointed leg opening regions (17) in an intermediate portion (16) of the side margin. Each concave side edge contour (15) has a selected longitudinal extent along a length dimension (26) of the article (10). A liquid permeable topsheet layer (28) is connected in a superposed facing relation to the backsheet layer (30), and an absorbent body (32) is sandwiched between the topsheet layer (28) and the backsheet layer (30). A separately provided gusset-flap composite member (19) is connected to at least one of the backsheet and topsheet layers along each of the leg opening regions (17). The gusset-flap member (19) provides a leg gusset section (142) and a containment flap section (144), and is distinctively configured to provide improved leakage resistance, fit and comfort.Type: GrantFiled: June 4, 1999Date of Patent: June 19, 2001Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Mark John Beitz, Monica Lynn Bontrager, Barbara Ann Gossen, Chris Lee Heikkinen, Daniel Hoo, David Andrae Justmann, Richard Francis Keller, Cynthia Helen Nordness, Douglas Paul Rammer, Lorry Francis Sallee, Raymond Gerard St. Louis, David James VanEperen, Cynthia Louise Wyngaard, Sandra Marie Yarbrough, Roxanne Marie Zuleger, Steven Scott Friderich, Eric Scott Kepner, Kuo-Shu Edward Chang
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Patent number: 6152904Abstract: There is provided an absorbent system for personal care products which may be transversely divided into about an equally sized center zone, two intermediate zones and two end zones where the ratio of the amount of liquid stored in the center zone to the amount of liquid stored in at least one of the end zones 30 minutes after each of three insults of 80 ml according to a MIST Evaluation Test is less than 5:1. Such an absorbent system may be used in personal care products like diapers, training pants, feminine hygiene products, absorbent underpants, adult incontinence products, and the like.Type: GrantFiled: November 22, 1996Date of Patent: November 28, 2000Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Billie Jean Matthews, Richard Allen Anderson, Andrew Scott Burnes, Kuo-Shu Edward Chang, Richard Norris Dodge, II, Stanley Michael Gryskiewicz, Connie Lynn Hetzler, Margaret Gwyn Latimer, Yong Li, Sylvia Bandy Little, Tamara Lee Mace, James Brian Riddle, Lawrence Howell Sawyer, Eugenio Go Varona, Hoa La Wilhelm
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Patent number: D406079Type: GrantFiled: October 2, 1997Date of Patent: February 23, 1999Inventors: Stanley Michael Gryskiewicz, Linda Marie Gryskiewicz, Stanley Michael Gryskiewicz, III, Stacey Michelle Gryskiewicz, Clarence Neece Cook, III, Kuo-Shu Edward Chang