Patents Represented by Attorney, Agent or Law Firm Kevin C. Johnson
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Patent number: 6245693Abstract: The laminated absorbent structure has absorbent gelling material (26) and a first odour absorber (24) each held between separate containing layers (2,4,6). The absorbent gelling material also separates a fluid-receiving surface from the first odour absorber. A second absorber may be a coating sprayed onto the layer (2) so that it is between the gelling material and the first surface. The first absorber is active when not wetted and the second odour absorber is active when wetted. The containing layers are fibrous layers and absorbent gelling material and the odour absorbers are in particle or powder form.Type: GrantFiled: June 10, 1999Date of Patent: June 12, 2001Assignee: The Procter & Gamble CompanyInventors: Ivano Gagliardi, Mario Guarracino, Carlo Toro
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Patent number: 6232521Abstract: The present invention relates to a disposable absorbent article (1) comprising a liquid pervious top sheet (2), an absorbent core (4), and a back sheet (3). Said back sheet comprises a fluid permeable polymeric film having uni-directional fluid transfer towards the core, and said core comprising a fluid storage layer, wherein said absorbent article exhibits a fluid contact angle gradient across said storage layer and said back sheet.Type: GrantFiled: June 25, 1998Date of Patent: May 15, 2001Assignee: The Procter & Gamble CompanyInventors: Christopher Philip Bewick-Sonntag, Michael Divo, Paolo Veglio
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Patent number: 6231948Abstract: The present invention pertains, in a preferred embodiment, to a fluid-pervious web comprising a first or wearer-contacting surface and a second or garment-facing surface. The web is particularly well suited for use as a topsheet on a disposable absorbent article. The first and second surfaces are separated from one another by an intermediate portion. The first surface of the web provides a structure which exhibits a surface energy less than the surface energy of the intermediate portion. In a preferred embodiment, the web exhibits a plurality of regions of comparatively low surface energy which define surface energy gradients where they interface with higher surface energy web surfaces. More particularly, the present invention pertains to a fluid-pervious web having a plurality of small-scale surface energy gradients which are oriented and located so as to effectively transport fluid away from the first or wearer-contacting surface.Type: GrantFiled: April 11, 1997Date of Patent: May 15, 2001Assignee: The Procter & Gamble CompanyInventors: William R. Ouellette, Yann-Per Lee, A. Renee Haney, Frederick M. Langdon, John B. Burchnall
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Absorbent articles having an odor control system consisting of absorbent gelling material and silica
Patent number: 6225524Abstract: The present invention relates to an absorbent article in particular sanitary napkins and panty liners, comprising a liquid permeable topsheet, a backsheet and an absorbent core intermediate the topsheet and backsheet. The absorbent article further comprises an improved odor control system comprising the combination of absorbent gelling material with silica.Type: GrantFiled: December 7, 1998Date of Patent: May 1, 2001Assignee: The Procter & Gamble CompanyInventors: Mario Guarracino, Alessandro Gagliardini -
Patent number: 6217542Abstract: The invention provides a tampon insertion device comprising a tampon applicator having a first end and a second end, a tampon having a string, the tampon being positioned within the tampon applicator, and a plunger attached to the tampon applicator by the tampon string. The string is attached to the plunger at at least one connection point on the plunger. The tampon applicator with the tampon therein and the plunger are preferably positioned adjacent to one-another in a substantially parallel orientation prior to the use of the tampon insertion device. Such parallel orientation between the tampon applicator and the plunger is maintained by the tampon string connected to the plunger.Type: GrantFiled: September 17, 1999Date of Patent: April 17, 2001Assignee: The Procter & Gamble CompanyInventors: Tiffany April Stevens, Chrissie Melinda Smits, Melvin Cecil Wilson, Jr., Adrienne Michelle Szmuriga
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Method for opening a packaging device and retrieving an interlabial absorbent article placed therein
Patent number: 6203512Abstract: The invention provides an individual package in combination with an absorbent interlabial device. The package has a longitudinal axis, a top portion, a bottom portion positioned oppositely to the top portion, a first surface and a second surface. The package may be folded about the longitudinal axis to form two halves or it may be formed from one more sheets fitted together to form the package. The package may be re-sealable. An absorbent interlabial device is positioned within the package. The absorbent interlabial device is readily retrievable from the package such that a user neither touches nor contaminates the absorbent portion of the absorbent interlabial device with any part of her hand prior to the use and in using the absorbent interlabial device.Type: GrantFiled: June 28, 1999Date of Patent: March 20, 2001Assignee: The Procter & Gamble CompanyInventors: Diane Dunn Farris, Alicia Mary Hall, Thomas Ward Osborn, III -
Patent number: 6186994Abstract: This invention relates to absorbent tampons. More particularly, the invention relates to an improved absorbent tampon having an improved fluid acquisition rate without decrease in capacity or fluid retention characteristics. This is accomplished by an absorbent tampon comprising a layered structure constructed from layers of rayon and cotton. The tampon pledget of the present invention is in the form of a laminar pad of discrete layers. The pledget comprises at least an uppermost layer, a lowermost layer, and at least one intermediate layer positioned between the uppermost layer and the lowermost layer. The uppermost layer and the lowermost layer are each comprised primarily of rayon. At least one intermediate layer is comprised primarily of cotton. In a particular aspect of the invention, the outer layers (i.e. the uppermost layer and the lowermost layer) are comprised of at least about 60% rayon, more preferably at least about 90% rayon, and even more preferably entirely of rayon.Type: GrantFiled: July 30, 1998Date of Patent: February 13, 2001Assignee: The Procter & Gamble CompanyInventors: Virginia Bowles, Jon Arthur Curtis, Jenéne Marie Francis
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Patent number: 6183587Abstract: The method of making a shaped tube of absorbent material for the sanitary napkin, in one embodiment, involves the steps of: (a) providing a web of absorbent material, the web of absorbent material having a length, a width, a longitudinal centerline oriented in the direction of the length of the web of absorbent material, a first surface and an opposed second surface; (b) providing a cover for the first and second surfaces of the web of absorbent material; (c) at least partially covering the first and second surfaces of the web of absorbent material with the cover to form a composite web having longitudinal side margins; (d) folding the composite web at least once with folds defining fold lines that are arranged about the longitudinal centerline of the web of absorbent material; and (e) autogenously bonding a portion of the cover that covers the first surface of the web of absorbent material to a portion of the cover that covers an opposing portion of the second surface of the web of absorbent material.Type: GrantFiled: April 27, 1998Date of Patent: February 6, 2001Assignee: The Procter & Gamble CompanyInventors: Ronald Ray McFall, John Lee Hammons, Diana Lynn Gann, John Richard Noel
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Patent number: 6175056Abstract: A disposable absorbent article is provided which is substantially flat prior to use for wearing adjacent a body discharge area having a longitudinal centerline and a lateral centerline orthogonal thereto, and defining longitudinal and lateral directions respectively. The disposable absorbent article includes a liquid pervious top sheet, a back sheet joined to the top sheet, and an absorbent core intermediate the back sheet and the top sheet. The absorbent core includes an expanding member for expanding the article into a tridimensional structure while being worn by a user. The expanding member is activated by body fluids. The top sheet is capable of expanding as the absorbent article expands upon activation by body fluids.Type: GrantFiled: February 24, 1999Date of Patent: January 16, 2001Assignee: The Procter & Gamble CompanyInventors: Giovanni Carlucci, Gennaro Giorgini, Nicola D'Alessio, Maurizio Tamburro
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Patent number: 6132411Abstract: Absorbent articles such as disposable diapers, incontinence briefs, diaper holders, training pants, feminine hygiene garments and the like, that have a unique side panel improves the overall fit of the absorbent article as well as reducing the red marking of the wearer's skin. Such absorbent articles include a chassis assembly preferably having a liquid pervious topsheet, a liquid impervious backsheet joined to the topsheet, and an absorbent core positioned between the topsheet and the backsheet; a pair of side panels joined to the chassis assembly; and a closure system for maintaining the absorbent article on the wearer. The side panels have a low extension force leg zone and a high extension force waist zone.Type: GrantFiled: June 4, 1997Date of Patent: October 17, 2000Assignee: The Procter & Gamble CompanyInventors: Michael T. Huber, Sheila S. Rodriguez
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Patent number: 6129801Abstract: The present invention provides a stable material having enhanced extensibility and a method for making the same. A tensioning force is applied to the neckable material to neck the material in a direction perpendicular to the first direction. The necked material is then subjected to mechanical stabilization to provide a stabilized extensible necked material. The stabilized extensible necked material is then passed between the peripheral surface of a cylinder which is driven in rotating motion and a device for pressing the stabilized extensible necked material against the peripheral surface of the cylinder. A retarding member retards the passage of the stabilized extensible necked material and directs the material away from the peripheral surface of the cylinder. The stabilized extensible necked material is easily extended in a direction parallel to the first direction and perpendicular to the first direction.Type: GrantFiled: April 23, 1997Date of Patent: October 10, 2000Assignee: The Procter & Gamble CompanyInventors: Douglas H. Benson, John J. Curro
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Patent number: 6114263Abstract: The present invention provides a stable nonwoven web having enhanced extensibility and a method for making the same. A neckable nonwoven web is fed in a first direction. The neckable nonwoven web is subjected to incremental stretching in a direction perpendicular to the first direction. A tensioning force is applied to the neckable nonwoven web to neck the nonwoven web. The necked nonwoven web is then subjected to mechanical stabilization to provide a stabilized extensible necked nonwoven web. The stabilized extensible necked nonwoven web is easily extended in a direction parallel to the direction necking.Type: GrantFiled: May 10, 1999Date of Patent: September 5, 2000Assignee: The Procter & Gamble CompanyInventors: Douglas H. Benson, John J. Curro
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Patent number: 6050985Abstract: Unitary disposable absorbent articles, such as disposable diapers and the like, that have a unique design that improves the wearer's comfort and skin health. Such absorbent articles include an outer covering, an absorbent core positioned within the outer covering, and a closure system joined to the outer covering for fastening the absorbent article on a wearer. The absorbent article has an absorbent article area. The absorbent article is designed to fit an infant having a rise dimension from about X to about Y, where Y represents the maximum rise dimension of the infant that the absorbent article is intended to fit. The absorbent article has a fit index of absorbent article area to rise dimension Y of less than or equal to about 240.Type: GrantFiled: November 8, 1996Date of Patent: April 18, 2000Assignee: The Procter & Gamble CompanyInventors: Gary Dean Lavon, Donald Carroll Roe
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Patent number: 6039906Abstract: A method for aperturing a laminate. The first step is to provide a laminate having at least one nonwoven web of thermoplastic fibers and at least one elastic member. The laminate is forwarded through a pressure biased nip having a relief patterned nip defining member having a plurality of pattern elements and a nip defining anvil member. The nip defining members are biased towards each other with a predetermined pattern-element loading. Each nip defining member is heated to a temperature that is sufficiently above the melt temperature of the thermoplastic fibers of the nonwoven web and above the melt temperature of the elastic member to enable aperturing of the laminate.Type: GrantFiled: August 29, 1997Date of Patent: March 21, 2000Assignee: The Procter & Gamble CompanyInventors: David Mark Sageser, Takuya Shirakawa, Koichi Morimoto
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Patent number: 6027483Abstract: A web material which exhibits an elastic-like behavior along at least one axis when subjected to an applied and subsequently released elongation. The web material includes a strainable network having at least two visually distinct regions of the same material composition. The first region undergoes a molecular-level deformation and the second region initially undergoes a substantially geometric deformation when the web material is subjected to an applied elongation in a direction substantially parallel to the axis of elongation.Type: GrantFiled: April 24, 1997Date of Patent: February 22, 2000Inventors: Charles W. Chappell, Eugene R. Sorensen, Kenneth B. Buell, John J. Curro, Michele A. Mansfield
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Patent number: 5993432Abstract: A web material exhibiting both an elastic-like and an expansive behavior in response to an applied elongation. The web material includes an elastic-like zone and an expansive zone disposed adjacent to the elastic-like zone. The expansive zone allows the elastic-like zone to extend without generating excessive tensional forces. The elastic-like zone includes a strainable network having a first region and a second region. The second region has a surface-pathlength greater than the surface-pathlength of the first region. The expansive zone has a surface-pathlength greater than the first region and different than that of the second region.Type: GrantFiled: September 15, 1997Date of Patent: November 30, 1999Assignee: The Procter & Gamble CompanyInventors: Richard W. Lodge, John J. Curro
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Patent number: 5989478Abstract: The present invention pertains, in a preferred embodiment, to a fluid-pervious web comprising a first or wearer-contacting surface and a second or garment-facing surface. The web is particularly well suited for use as a topsheet on a disposable absorbent article. The first and second surfaces are separated from one another by an intermediate portion. The first surface of the web provides a structure which exhibits a surface energy less than the surface energy of the intermediate portion. In a preferred embodiment, the web exhibits a plurality of regions of comparatively low surface energy which define surface energy gradients where they interface with higher surface energy web surfaces. More particularly, the present invention pertains to a fluid-pervious web having a plurality of small-scale surface energy gradients which are oriented and located so as to effectively transport fluid away from the first or wearer-contacting surface.Type: GrantFiled: April 11, 1997Date of Patent: November 23, 1999Assignee: The Procter & Gamble CompanyInventors: William R. Ouellette, Yann-Per Lee, A. Renee Haney, Frederick M. Langdon, John B. Burchnall
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Patent number: 5961508Abstract: A compound sanitary napkin including a primary absorbent member and a secondary absorbent member. The primary absorbent member has a length and a width. The secondary absorbent member has a length and a width. The primary absorbent member and the secondary absorbent member have a common length. The primary absorbent member includes an absorbent core and a fluid pervious topsheet superposed on the absorbent core. The secondary absorbent member includes a fluid pervious topsheet, a fluid impervious backsheet joined to the topsheet and an absorbent element positioned between the topsheet and the backsheet. The primary absorbent member is affixed to the secondary absorbent member by union means. The primary absorbent member is compressible when subjected to a compressive force exerted about its periphery and is sufficiently resilient such that said primary absorbent member is able to return substantially to its original unstressed configuration once the compressive force is removed.Type: GrantFiled: May 3, 1996Date of Patent: October 5, 1999Assignee: The Proctor & Gamble CompanyInventors: Katherine Louise Mayer, Bruce William Lavash, John Lee Hammons, Thomas Ward Osborn, III
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Patent number: 5932316Abstract: The present invention pertains, in a preferred embodiment, to a method for forming a nonwoven web exhibiting a plurality of surface energy gradients.Type: GrantFiled: July 24, 1998Date of Patent: August 3, 1999Assignee: The Procter & Gamble CompanyInventors: James W. Cree, Luis E. Ravaglia
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Patent number: 5928210Abstract: A fluid pervious topsheet suitable for use on an absorbent article is disclosed. The topsheet includes an apertured, three-dimensional, macroscopically expanded, fluid pervious web having a textured wearer-contacting surface. The composite web permits liquids to penetrate while providing an improved, less plastic-like feel and visual aesthetics.Type: GrantFiled: November 19, 1996Date of Patent: July 27, 1999Assignee: The Procter & Gamble CompanyInventors: William R. Ouellette, Brian F. Gray, Michael J. Schettler, Gregory Ashton