Patents by Inventor Leif U. R. Widlund
Leif U. R. Widlund 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: 5370639Abstract: A disposable diaper which can be put on by means of pressure-adhesive tape. For loosening and refastening the fastening tape tabs, the diaper is provided in the region for fastening the tape tabs with a non-elastic plastic strip, suitably of polyester.Type: GrantFiled: June 7, 1993Date of Patent: December 6, 1994Assignee: Molnlyke ABInventor: Leif U. R. Widlund
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Patent number: 5366452Abstract: The present invention relates to a method for the flat manufacture of three-dimensional articles, in particular absorbent disposable articles. According to the invention, a plurality of narrow, flexible absorbent bodies (1.sub.a -1.sub.Type: GrantFiled: June 19, 1992Date of Patent: November 22, 1994Assignee: Molnlycke ABInventors: Leif U. R. Widlund, Roy Hansson
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Patent number: 5295987Abstract: An absorbent, disposable article, such as a diaper, an incontinence guard or a sanitary napkin, which includes an outer liquid-impermeable casing layer which is intended to lie distal from the wearer in use, an inner, liquid-permeable casing layer which is intended to face toward the wearer's body in use and an absorbent pad enclosed between the two casing layers. The crotch part of the pad that is placed in the crotch region of the wearer in use is divided into mutually separate parts, which extend in the longitudinal direction of the article. These separate parts are mutually separated transversely, intermediate originally flat and pleatable areas of the two casing layers which are mutually joined and bridge the space between the separate parts.Type: GrantFiled: May 29, 1992Date of Patent: March 22, 1994Assignee: Molnlycke ABInventors: Leif U. R. Widlund, Roy Hansson
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Patent number: 5236429Abstract: A disposable diaper which can be put on by means of pressure-adhesive tape. For loosening and refastening the fastening tape tabs, the diaper is provided in the region for fastening the tape tabs with a non-elastic plastic strip, suitably of polyester.Type: GrantFiled: May 21, 1991Date of Patent: August 17, 1993Assignee: Molnlycke ABInventor: Leif U. R. Widlund
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Patent number: 5024672Abstract: A disposable diaper put on by means of pressure-adhesive tape, has a liquid-permeable inner layer closest to the user during use of the diaper, a liquid-tight outer layer, and an absorbent layer disposed between the inner and outer layers. Tape tabs at one end of the diaper close to the corners of the diaper have a portion permanently joined to the liquid-tight outer layer at that diaper end. A plastic strip for fastening the tape tabs when putting the diaper on the user is disposed on the opposite end of the diaper and consists of a material which is inelastic and has suitable properties for fastening the tape tabs as well as removing and refastening the tape tabs. The plastic strip is elongated transversely of the diaper to permit adjustment of the tension of the diaper around the user by loosening and refastening the tape tabs. The strip extends across the width of the diaper on the outside of the liquid-tight outer layer. The tabs are also fastened to the same side of the liquidtight outer layer.Type: GrantFiled: December 8, 1988Date of Patent: June 18, 1991Inventor: Leif U. R. Widlund
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Patent number: 4692163Abstract: The invention relates to absorption articles such as diapers or sanitary napkins comprising partly a liquid permeable first outer layer and a preferably liquid impermeable second outer layer applied to either side of an absorption body encased therein; partly elastic members applied under tension and intended for bringing the edge portions of said article into tightly sealing contact with the body of the wearer. The primary distinguishing feature of the inventive article is that the elastic members are comprised in a network.Type: GrantFiled: November 26, 1985Date of Patent: September 8, 1987Assignee: Molnlycke ABInventors: Leif U. R. Widlund, Maj I. Ternstrom
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Patent number: 4634440Abstract: An absorbent article, such as a diaper, a sanitary towel or bandage, having an absorbent core, a liquid-permeable topsheet intended to be in contact with the wearer when the article is worn, and a liquid-impermeable layer arranged on the opposite side of the absorbent core. The liquid-permeable topsheet comprises a perforated but otherwise liquid-impermeable layer, the perforations comprising straight ducts which are of uniform width along the whole of their lengths. The ends of these ducts freely project away from the topsheet and extend into the absorbent core. Fibers extend into the ducts in a manner such that the fiber density in the ducts decreases in a direction away from the free ends of the ducts, so that the fibers form capillaries which taper toward the interior of the absorbent article.Type: GrantFiled: May 14, 1985Date of Patent: January 6, 1987Assignee: Molnlycke ABInventors: Leif U. R. Widlund, Sven G. Bergdahl
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Patent number: 4626254Abstract: The invention relates to an absorbent article, such as a sanitary towel, diaper or bandage, having an upper layer or topsheet made of a liquid-impermeable material, the topsheet being provided with openings and being intended to lie against the body of the wearer. The invention is mainly characterized in that the openings are located in depressions arranged in the topsheet and in such wall portions of the depressions which, when seen from the mouths of the depressions, form at least a right angle to the plane of the topsheet; and in that the bottoms of the depressions, when projected perpendicularly to the plane of the topsheet, substantially cover the mouths of the depressions in this plane.Type: GrantFiled: May 14, 1985Date of Patent: December 2, 1986Assignee: Molnycke ABInventors: Leif U. R. Widlund, Carl-Daniel W. Norenberg
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Patent number: 4564108Abstract: A package for menstrual protectors such as sanitary napkins and pads or panty protectors has one side coated with pressure-sensitive adhesive for securing the napkin to the underwear of the user. A plurality of napkins have their adhering side releasably fixed to a plastic film or the like. When the film with the attached napkins is folded, the napkins are placed on top of each other forming one or more piles enclosed by the film. The overlapping edges of the film extending laterally beyond the protectors are then sealed together.Type: GrantFiled: June 12, 1984Date of Patent: January 14, 1986Assignee: Molnlycke ABInventors: Leif U. R. Widlund, Stefan Nedestam, Arne Froidh
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Patent number: 4342562Abstract: A method and apparatus for manufacturing a package from a package blank which includes a series of lateral surfaces and end wall sections connected by fold lines are disclosed. The method disclosed includes folding the package blank along fold lines between the lateral surfaces, moving such partially formed package blank along a predetermined path, and rotating the package blank while it is moving along that path while at the same time sequentially folding the end wall sections along a second set of fold lines at one end of the package so as to form an end wall surface at that end.Type: GrantFiled: December 12, 1979Date of Patent: August 3, 1982Assignee: Molnlycke AktiebolagInventors: Tor A. Froidh, Leif U. R. Widlund
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Patent number: 4319572Abstract: The invention relates to a disposable diaper, comprising a layer of a liquid-permeable, preferably non-woven material, intended to be placed in contact with the body of the user, and of a second layer of a liquid-impermeable material, between which layers an absorbent body is arranged, these two layers extending laterally outside the edges of the absorbent body.Type: GrantFiled: June 24, 1980Date of Patent: March 16, 1982Assignee: Molnlycke ABInventors: Leif U. R. Widlund, Maj I. Ternstrom
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Patent number: 4222381Abstract: In a menstrual tampon comprising one or more webs 1, rolled up in several layers around each other, of moisture-absorbing material, a pull string 2 is anchored and extends out of the tampon. This string is laid around the web 1 in at least two consecutive loops which, with portions 6 running back and forth approximately longitudinally to the tampon, surround and are in contact with at least two opposite side edges 7,8 of the web 1 of absorbent material, and extend out of one end of the tampon. (FIG. 2).Type: GrantFiled: December 15, 1978Date of Patent: September 16, 1980Assignee: Molnlycke ABInventors: Leif U. R. Widlund, Kerstin A. H. Strandberg
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Patent number: D254807Type: GrantFiled: August 3, 1977Date of Patent: April 22, 1980Assignee: Molnlycke ABInventors: John H. Kvamme, Leif U. R. Widlund, Tor A. Froidh, Hans E. Walden
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Patent number: D264381Type: GrantFiled: April 17, 1979Date of Patent: May 11, 1982Assignee: Molnlycke ABInventors: Kerstin A. H. Strandberg, Leif U. R. Widlund
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Patent number: D276846Type: GrantFiled: September 28, 1982Date of Patent: December 18, 1984Assignee: Molnlycke AktiebolagInventors: Leif U. R. Widlund, Stig S. Nedestam