Patents by Inventor Stephen J. Lange
Stephen J. Lange 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: 6726792Abstract: A method of making a flangeless seam for a disposable article including the following steps: A first member of the disposable article is provided. An electromagnetic field responsive member is provided on the first member. The first member is folded about the electromagnetic field responsive member providing opposing first proximal and first distal portions of the first member, the electromagnetic field responsive member being disposed at least partially between the opposing first proximal and first distal portions. A second member of the disposable article is provided in a folded configuration juxtaposed at least a portion of the first member to form a laminate including the first member and the second member. An electromagnetic field is applied across at least a portion of the laminate to heat the electromagnetic field responsive member to a temperature which joins at least a portion of the first member and at least a portion of the second member.Type: GrantFiled: December 10, 1999Date of Patent: April 27, 2004Assignee: The Procter & Gamble CompanyInventors: Larry K. Johnson, Stephen J. Lange, John J. Angstadt, Bradley E. Walsh, Fredrick W. Gibson
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Patent number: 5624420Abstract: Non-perforated tear lines for removal and evacuation of contents of disposable undergarments such as training pants. Non-perforated tear lines include a series of bond sites which are shaped, sized, spaced and arranged to provide a zone of weakness to permit severance of nonelasticized portions as well as elastic disposed in the waistband, the body of the pant, and the elastic leg bands for complete removal. Bond sites are formed by displacing a portion of material such that a thickened outer edge defines a weakened area of reduced thickness. Thus, elastic in the waistband may be disposed continuously 360 degrees around the wearer's waist, and elastic in the leg bands may be disposed continuously 360 degrees around the wearer's legs. In addition, improved pants having elasticized ear flaps in the body of the pants can be conveniently removed from the wearer.Type: GrantFiled: July 17, 1995Date of Patent: April 29, 1997Assignee: The Procter & Gamble CompanyInventors: Russell P. Bridges, James R. Golan, Stephen J. Lange, Michael J. Madill, Robert H. Siegfried
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Patent number: 5622589Abstract: According to the present invention, a method of making flangeless seams especially useful in disposable articles, such as training pants, incontinence articles and the like is provided. The method includes the steps of: (1) providing a first member of the disposable article; (2) providing a barrier member; (3) folding the first member of the disposable article about the barrier member providing opposing proximal and distal portions of the first member, the barrier member being disposed at least partially between the opposing proximal and distal portions; (4) providing a second member of the disposable article juxtaposed at least a portion of the first member to form a laminate including the first member, the second member and the barrier member; and (5) applying a joining means across at least a portion of laminate, the joining means joining at least a portion of the first member and the second member, the barrier member preventing the joining means from joining the proximal portion with the distal portion.Type: GrantFiled: October 10, 1995Date of Patent: April 22, 1997Assignee: The Procter & Gamble CompanyInventors: Larry K. Johnson, Stephen J. Lange
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Patent number: 5607537Abstract: According to the present invention, a method of making flangeless seams especially useful in disposable articles, such as training pants, incontinence articles and the like is provided.Type: GrantFiled: October 10, 1995Date of Patent: March 4, 1997Assignee: The Procter & Gamble CompanyInventors: Larry K. Johnson, Stephen J. Lange
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Patent number: 5597437Abstract: Described herein is a multiple layer absorbent core having a front ear section, a crotch section and a back ear section, wherein the machine direction length of the crotch section equals the combined machine direction length of the front ear section and the back ear section, the angle and radii forming the transition from the crotch width to the ear width being equal, the core being suitable for use in an absorbent article, and a method for manufacturing such multiple layer absorbent core.Type: GrantFiled: January 12, 1995Date of Patent: January 28, 1997Assignee: Procter & GambleInventors: Stephen J. Lange, Douglas H. Benson, John W. Hackett, Gary D. Lavon, Bret D. Seitz
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Patent number: 5518566Abstract: A method and apparatus for forming a tensioned garter. A garter is any continuous loop of elastic material or a laminate of elastic bands and one or more flexible backing sheets. In one embodiment mandrels having a perimeter of the desired garter shape are mounted to a rotating drum. Tensioned elastic ribbons are progressively clamped, sealed, and cut around the mandrels to form individual tensioned garters which cling to the side walls of the mandrels. Once the garters are formed the mandrels may be rotated on their radial axes for alignment with downstream operations. Sealing through elastic members is avoided by interrupting the bonding of elastic members to an elasticized laminate at locations where ribbons are to be clamped. High compression of elastics where they are not sealed to the laminate causes elastic members to burst and contract. Elastic contraction leaves an area in which ribbons may then be bonded together without sealing through elastic members.Type: GrantFiled: October 5, 1994Date of Patent: May 21, 1996Assignee: The Procter & Gamble CompanyInventors: Russell P. Bridges, James R. Golan, Ronald H. Helton, Stephen J. Lange, Michael J. Madill, Michael G. Nease
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Patent number: 5516392Abstract: A method for combining a tensioned garter with a substrate while holding the garter in a predetermined shape. A mandrel has a perimeter of the desired garter shape. An elastic garter is stretched and placed onto the mandrel such that an upper portion of the garter extends above a top surface of the mandrel while a lower portion of the garter clings to a side wall of the mandrel. The upper portion of the garter has sufficient elastic tension to cause it to fold over onto the top surface of the mandrel to form a garter flange. A substrate is then engaged with the garter flange and a sealing means seals the flange to the substrate, using the top surface of the mandrel as an anvil.Type: GrantFiled: October 13, 1994Date of Patent: May 14, 1996Assignee: The Procter & Gamble CompanyInventors: Russell P. Bridges, James R. Golan, Ronald H. Helton, Stephen J. Lange, Michael J. Madill, Michael G. Nease
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Patent number: 5393360Abstract: A method and apparatus for forming a tensioned garter and bonding it to a substrate while holding the garter in a predetermined shape. A garter is any continuous loop of elastic material or a laminate of elastic bands and one or more flexible backing sheets. In one embodiment mandrels having a perimeter of the desired garter shape are mounted to a rotating drum. Tensioned elastic ribbons are progressively wrapped, sealed, and cut around the mandrels to form individual tensioned garters which cling to the side walls of the mandrels. In another embodiment each mandrel has a top surface. The upper portion of a garter has sufficient elastic tension to cause it to fold over the mandrel top surface to form a garter flange thereon. A substrate is then engaged with the garter flange and an external sealing means seals the flange to the substrate, using the mandrel top surface as an anvil. In still another embodiment the mandrel top surface has a raised outer rim.Type: GrantFiled: October 6, 1993Date of Patent: February 28, 1995Assignee: The Procter & Gamble CompanyInventors: Russell P. Bridges, James R. Golan, Ronald H. Helton, Stephen J. Lange, Michael J. Madil, Michael G. Nease