Patents by Inventor Palani Raj Ramaswami Wallajapet
Palani Raj Ramaswami Wallajapet 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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Publication number: 20200306107Abstract: The foam and fiber composite can provide an absorbent article with improved dryness and an improved liquid distribution capability. The foam and fiber composite can be formed from at least two materials. The first material is an open cell foam material and the second material is a fibrous material. A plurality of the fibers forming the fibrous material can be fluid inserted into the open cell foam material thereby forming the foam and fiber composite. In various embodiments, the foam and fiber composite can be incorporated into an absorbent article as a component of an absorbent system located between a topsheet layer and a backsheet layer of the absorbent article.Type: ApplicationFiled: September 9, 2016Publication date: October 1, 2020Inventors: Jun G. Zhang, April Montoya Vaverka, Palani Raj Ramaswami Wallajapet, Richmond R. Cohen, Mary Alice Berceau, Joseph K. Baker, Udaykumar Raval, David Glen Biggs
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Publication number: 20200307149Abstract: The foam and fiber composite can provide an absorbent article with improved dryness and an improved liquid distribution capability. The foam and fiber composite can be formed from at least two materials. The first material is an open cell foam material and the second material is a fibrous material. A plurality of the fibers forming the fibrous material can be fluid inserted into the open cell foam material thereby forming the foam and fiber composite. In various embodiments, the foam and fiber composite can be incorporated into an absorbent article as a component of an absorbent system located between a topsheet layer and a backsheet layer of the absorbent article.Type: ApplicationFiled: September 9, 2016Publication date: October 1, 2020Inventors: Jun G. Zhang, April Montoya Vaverka, Palani Raj Ramaswami Wallajapet, Richmond R. Cohen, Mary Alice Berceau, Charles Wilson Colman, David Glen Biggs
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Publication number: 20200306106Abstract: The foam and fiber composite can provide an absorbent article with improved dryness and an improved liquid distribution capability. The foam and fiber composite can be formed from at least two materials. The first material is an open cell foam material and the second material is a fibrous material. A plurality of the fibers forming the fibrous material can be fluid inserted into the open cell foam material thereby forming the foam and fiber composite. In various embodiments, the foam and fiber composite can be incorporated into an absorbent article as a component of an absorbent system located between a topsheet layer and a backsheet layer of the absorbent article.Type: ApplicationFiled: September 9, 2016Publication date: October 1, 2020Inventors: Jun G. Zhang, April Montoya Vaverka, Palani Raj Ramaswami Wallajapet, Richmond R. Cohen, Mary Alice Berceau, Charles Wilson Colman, David Glen Biggs
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Publication number: 20190269564Abstract: The foam and fiber composite can provide an absorbent article with improved dryness and an improved liquid distribution capability. The foam and fiber composite can be formed from at least two materials. The first material is an open cell foam material and the second material is a fibrous material. A plurality of the fibers forming the fibrous material can be fluid inserted into the open cell foam material thereby forming the foam and fiber composite. In various embodiments, the foam and fiber composite can be incorporated into an absorbent article as a component of an absorbent system located between a topsheet layer and a backsheet layer of the absorbent article.Type: ApplicationFiled: September 9, 2016Publication date: September 5, 2019Inventors: Jun G. Zhang, April Montoya Vaverka, Palani Raj Ramaswami Wallajapet, Richmond R. Cohen, Mary Alice Berceau, Charles Wilson Colman, David Glen Biggs
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Patent number: 8496638Abstract: Absorbent articles with carefully controlled stretch properties are disclosed. In particular, the absorbent articles have a waistband that encompasses a pair of opposing side panels and a waist region of the article. The side panels are attached to longitudinal edges of a chassis and are configured to extend around a person's waist. The side panels are attached to fastening devices for fastening the absorbent article to a wearer. In accordance with the present invention, the side panels and the waist region are both elastic. In order to improve fit and comfort, the stretch properties of the side panels are matched with the stretch properties of the waist region. For example, elongation of the side panels can be matched to elongation of the waist region or, alternatively, displacement of the side panels can be matched to the displacement of the waist region for a given range of forces.Type: GrantFiled: June 30, 2004Date of Patent: July 30, 2013Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Patrick Robert Lord, Adrienne Nicole Hengels, Palani Raj Ramaswami Wallajapet, Catherine Marguerite Hancock-Cooke, Daniel Lee Ellingson
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Patent number: 8317767Abstract: An absorbent article includes a liquid intake region, a liquid retention region, a barrier region, and plural strips of microlayer material located adjacent to the liquid retention region.Type: GrantFiled: January 11, 2007Date of Patent: November 27, 2012Assignee: Kimberly-Clark Worldwide, Inc.Inventors: John P. Vukos, Vasily A. Topolkaraev, Thomas W. Odorzynski, Palani Raj Ramaswami Wallajapet, Georgia L. Zehner, Duane G. Uitenbroek, Richard W. Tanzer
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Patent number: 7994078Abstract: The present invention provides a nonwoven web prepared from an aliphatic polyester polymer which has sufficient tear strength and is biodegradable. Biodegradable nonwoven webs of the present are prepared from a polymer blend having from about 65% by weight to about 99% by weight of a biodegradable aliphatic polyester polymer and from about 1% by weight to about 35% by weight of a second polymer selected from the group consisting of a polymer having a lower melting point than the biodegradable aliphatic polyester polymer, a polymer having a lower molecular weight than the biodegradable aliphatic polyester polymer and mixtures thereof. Surprisingly, the nonwoven webs of the present invention have a tear strength greater than the tear strength of a nonwoven web prepared from the biodegradable aliphatic polyester polymer alone.Type: GrantFiled: December 10, 2003Date of Patent: August 9, 2011Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Mark G. Reichmann, Maya Aroch, Joy Francine Jordan, Peter Michailovich Kobylivker, Rowland Jaynes McClellan, Jr., Ann Louise McCormack, Palani Raj Ramaswami Wallajapet, Vasily A. Topolkaraev, Dennis Y. Lee, Steven R. Stopper
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Patent number: 7704341Abstract: In a method and apparatus for forming a bonded web comprised at least in part of a polyester, a first material web and a second material web are arranged in opposed relationship with each other at least along those portions of the first and second material webs to be bonded together. At least one of the first and second material webs is comprised at least in part of the polyester. The opposed webs are transported in a machine direction to the nip of a bonding apparatus comprised of a first bonding member and a second bonding member defining the nip therebetween for passage of the opposed first and second material webs therebetween in the machine direction. A shear force is applied to the webs generally in the machine direction at the nip and the webs are mechanically bonded together at the nip while the shear force is applied to webs.Type: GrantFiled: December 15, 2005Date of Patent: April 27, 2010Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Vasily Aramovich Topolkaraev, Barton Andrew Laughlin, John Ford Condron, Patrick Martin Downey, Thomas David Ehlert, Dennis Y. Lee, Patrick Sean McNichols, Nagabhusan Senapati, Palani Raj Ramaswami Wallajapet
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Patent number: 7700500Abstract: The present invention relates to a biodegradable substrate having a durable hydrophilic surface prepared from a biodegradable polymeric substrate having a surface, wherein the biodegradable polymeric substrate has been rendered hydrophilic by subjecting the substrate to a corona glow discharge and/or coating the substrate with a hydrophilic polymeric material in an amount of from about 0.01 to about 2.0 percent by weight, based on the dry weight of the substrate. The biodegradable substrate can be used in absorbent personal care product, biomedical devices and food packaging.Type: GrantFiled: December 10, 2003Date of Patent: April 20, 2010Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Joy Francine Jordan, Ali Yahiaoui, Palani Raj Ramaswami Wallajapet
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Patent number: 7517579Abstract: A bonded structure including one or more substrates bonded together with a tackified amorphous poly-alpha-olefin adhesive composition. One method of making such a bonded structure is carried out by applying a tackified amorphous poly-alpha-olefin adhesive composition to one or more substrates at a temperature of about 170 degrees Celsius or lower, and joining the substrates to themselves or to one another. The bonded structure has a dynamic peel strength between about 400 and about 1000 grams per 25 millimeters. The bonding efficiency of the bonded structure renders the bonded structure suitable for incorporation into a variety of articles, including personal care products, health/medical products, and household/industrial product, for example.Type: GrantFiled: July 18, 2007Date of Patent: April 14, 2009Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Stephen Michael Campbell, Daniel William Hesse, Richard D. Schultz, Mark J. Jung, Richard M. Hansen, Cristian M. Neculescu, Sandra Marie Rogers, Violet May Grube, Rhiannon L. Thoresen, Thomas Michael Killian, Jonathan K. Rice, Palani Raj Ramaswami Wallajapet, Courtney Eileen Shea, Jason Sybren Fairbanks, Prasad Shrikrishna Potnis, Randall J. Palmer
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Patent number: 7317135Abstract: Disclosed is an absorbent structure comprising an acidic or basic water-swellable, water-insoluble polymer, a basic or acidic second material, and, optionally, a buffering agent, wherein the absorbent structure exhibits desirable absorbent properties. Specifically, the present invention relates to an absorbent structure having the ability to absorb a large quantity of liquid while maintaining a substantially desired and balanced pH profile on or along the upper surface of the absorbent structure. The absorbent structure is useful in disposable absorbent products, such as those disposable absorbent products that are used to absorb body liquid.Type: GrantFiled: December 22, 2005Date of Patent: January 8, 2008Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Palani Raj Ramaswami Wallajapet, Alice Y. Romans-Hess, Edwin T. Ta, Jian Qin
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Patent number: 7270889Abstract: A bonded structure including one or more substrates bonded together with a tackified amorphous poly-alpha-olefin adhesive composition. One method of making such a bonded structure is carried out by applying a tackified amorphous poly-alpha-olefin adhesive composition to one or more substrates at a temperature of about 170 degrees Celsius or lower, and joining the substrates to themselves or to one another. The bonded structure has a dynamic peel strength between about 400 and about 1000 grams per 25 millimeters. The bonding efficiency of the bonded structure renders the bonded structure suitable for incorporation into a variety of articles, including personal care products, health/medical products, and household/industrial product, for example.Type: GrantFiled: November 4, 2003Date of Patent: September 18, 2007Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Stephen Michael Campbell, Daniel William Hesse, Richard D. Schultz, Mark J. Jung, Richard M. Hansen, Cristian M. Neculescu, Sandra Marie Rogers, Violet May Grube, Rhiannon L. Thoresen, Thomas Michael Killian, Jonathan K. Rice, Palani Raj Ramaswami Wallajapet, Courtney Eileen Shea, Jason Sybren Fairbanks, Prasad Shrikrishna Potnis, Randall J. Palmer
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Publication number: 20070137762Abstract: In a method and apparatus for forming a bonded web comprised at least in part of a polyester, a first material web and a second material web are arranged in opposed relationship with each other at least along those portions of the first and second material webs to be bonded together. At least one of the first and second material webs is comprised at least in part of the polyester. The opposed webs are transported in a machine direction to the nip of a bonding apparatus comprised of a first bonding member and a second bonding member defining the nip therebetween for passage of the opposed first and second material webs therebetween in the machine direction. A shear force is applied to the webs generally in the machine direction at the nip and the webs are mechanically bonded together at the nip while the shear force is applied to webs.Type: ApplicationFiled: December 15, 2005Publication date: June 21, 2007Applicant: Kimberly-Clark Worldwide, Inc.Inventors: Vasily Aramovich Topolkaraev, Barton Andrew Laughlin, John Ford Condron, Patrick Martin Downey, Thomas David Ehlert, Dennis Y. Lee, Patrick Sean McNichols, Nagabhusan Senapati, Palani Raj Ramaswami Wallajapet
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Patent number: 7189888Abstract: This invention is a surge material having permanent storage properties that results in faster intake and greater saturation capacity and reduced fluid flowback. More specifically the invention is a surge material with a superabsorbent material printed on in a pattern of discrete regions. The objective of the invention is obtained by printing, or other known application process, a liquid superabsorbent precursor solution containing a crosslinkable composition onto a surge material and then curing the printed surge material to crosslink the polymers to get a surge material having discrete regions of superabsorbent material in the surge material. This invention is also useful in making an absorbent core of an absorbent article with improved strength, increased absorbency, and decreased shedding of superabsorbent material.Type: GrantFiled: December 21, 2001Date of Patent: March 13, 2007Assignee: Kimberly-Clark Worldwide, Inc.Inventors: James Hongxue Wang, Jian Qin, Jayant Chakravarty, Fu-Jya Daniel Tsai, Roland Columbus Smith, Jr., Christopher Dale Fenwick, Palani Raj Ramaswami Wallajapet, D. Keith Osteen, Erin A. Evans, Scott Stephen Englebert
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Patent number: 7179952Abstract: An absorbent article for absorbing body liquids, comprising a unitary system of microlayered film constructed and arranged to carry out the multiple functions of liquid intake, liquid uptake and distribution, liquid retention and liquid barrier requisite for such an absorbent article. The unitary system comprises a series of sequentially arranged topside, inside and bottom side regions having different properties needed to perform the functions of the absorbent article.Type: GrantFiled: August 25, 2003Date of Patent: February 20, 2007Assignee: Kimberly-Clark Worldwide, Inc.Inventors: John P. Vukos, Vasily A. Topolkaraev, Thomas W. Odorzynski, Palani Raj Ramaswami Wallajapet, Georgia L. Zehner, Duane G. Uitenbroek, Richard W. Tanzer
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Patent number: 7012105Abstract: Disclosed is an absorbent structure comprising an acidic or basic water-swellable, water-insoluble polymer, a basic or acidic second material, and, optionally, a buffering agent, wherein the absorbent structure exhibits desirable absorbent properties. Specifically, the present invention relates to an absorbent structure having the ability to absorb a large quantity of liquid while maintaining a substantially desired and balanced pH profile on or along the upper surface of the absorbent structure. The absorbent structure is useful in disposable absorbent products, such as those disposable absorbent products that are used to absorb body liquids.Type: GrantFiled: July 25, 2003Date of Patent: March 14, 2006Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Palani Raj Ramaswami Wallajapet, Alice Y. Romans-Hess, Edwin T. Ta, Jian Qin
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Patent number: 6951895Abstract: Disclosed is an absorbent composition comprising each of an acidic and a basic material, wherein the absorbent composition exhibits desirable absorbent properties. Specifically, the present invention relates to an absorbent composition comprising either an acidic water-swellable, water-insoluble polymer having a pKa between about 2 to about 12 or a basic water-swellable, water-insoluble polymer having a pKb between about 2 to about 12 and either a basic or an acidic second material. The absorbent composition has the ability to slowly absorb a large quantity of liquid, particularly while under an external pressure. The absorbent composition is useful in disposable absorbent products, such as those disposable absorbent products that are used to absorb bodily liquids.Type: GrantFiled: December 2, 1996Date of Patent: October 4, 2005Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Jian Qin, Palani Raj Ramaswami Wallajapet
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Patent number: 6824729Abstract: A method of preparing a nonwoven web that has substantially continuous synthetic fine fiber includes preparing an aqueous amide crosslinked polymer solution. The solution is extruded through a die having a plurality of orifices to form a plurality of threadlines. The threadlines are then attenuated with a primary gaseous source under conditions sufficient to permit the viscosity of each threadline to increase incrementally with increasing distance from the die, at a rate sufficient to provide fibers having a desired attenuation and mean fiber diameter without significant fiber breakage.Type: GrantFiled: March 4, 2002Date of Patent: November 30, 2004Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Jian Oin, Yong Li, Wendy Lynn Van Dyke, Anthony John Wisneski, Palani Raj Ramaswami Wallajapet, Hannong Rhim
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Publication number: 20040166758Abstract: The present invention provides a nonwoven web prepared from an aliphatic polyester polymer which has sufficient tear strength and is biodegradable. Biodegradable nonwoven webs of the present are prepared from a polymer blend having from about 65% by weight to about 99% by weight of a biodegradable aliphatic polyester polymer and from about 1% by weight to about 35% by weight of a second polymer selected from the group consisting of a polymer having a lower melting point than the biodegradable aliphatic polyester polymer, a polymer having a lower molecular weight than the biodegradable aliphatic polyester polymer and mixtures thereof. Surprisingly, the nonwoven webs of the present invention have a tear strength greater than the tear strength of a nonwoven web prepared from the biodegradable aliphatic polyester polymer alone.Type: ApplicationFiled: December 10, 2003Publication date: August 26, 2004Inventors: Mark G. Reichmann, Maya Aroch, Joy Francine Jordan, Peter Michailovich Kobylivker, Rowland Jaynes McClellan, Ann Louise McCormack, Palani Raj Ramaswami Wallajapet, Vasily A. Topolkaraev, Dennis Y. Lee, Steven R. Stopper
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Publication number: 20040127123Abstract: The present invention relates to a biodegradable substrate having a durable hydrophilic surface prepared from a biodegradable polymeric substrate having a surface, wherein the biodegradable polymeric substrate has been rendered hydrophilic by subjecting the substrate to a corona glow discharge and/or coating the substrate with a hydrophilic polymeric material in an amount of from about 0.01 to about 2.0 percent by weight, based on the dry weight of the substrate. The biodegradable substrate can be used in absorbent personal care product, biomedical devices and food packaging.Type: ApplicationFiled: December 10, 2003Publication date: July 1, 2004Applicant: Kimberly-Clark Worldwide, Inc.Inventors: Joy Francine Jordan, Ali Yahiaoui, Palani Raj Ramaswami Wallajapet