Patents by Inventor Donald T. Landin
Donald T. Landin 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: 20130065490Abstract: A method of refurbishing vinyl composition tile flooring includes sequentially wet abrading an exposed surface of a vinyl composition tile floor with a series of structured abrasive members affixed to a machine driver pad, wherein the series of structured abrasive members have decreasing abrasive particle size. The method may include a prior abrading step using and aggressive nonwoven abrasive article. The method may include application of polymeric finish after abrading.Type: ApplicationFiled: September 12, 2011Publication date: March 14, 2013Inventors: Donald T. Landin, James L. McArdie
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Publication number: 20090181075Abstract: A transdermal drug delivery device comprising an adhesive matrix, an effective amount of drospirenone, and an oligomeric adjuvant selected from an oligolactic acid, oligolactic acid derivatives, or mixtures thereof. Also, a transdermal drug delivery device comprising a backing film and an adhesive matrix which comprises an effective amount of drospirenone, a solubilizing agent, and a permeation enhancer selected from the group consisting of alkyl lactates, carboxylic acids, alkyl esters of fatty acids, and mixtures thereof.Type: ApplicationFiled: July 13, 2006Publication date: July 16, 2009Inventors: Ryan D. Gordon, Peter M. Seiler, Donald T. Landin, Stefan Bracht, Wolfgang Eder
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Publication number: 20080108958Abstract: A medical device (20) is provided that is suitable for use in the delivery of active component into or through the skin. The medical device comprises: an extension member (22) having a first major surface (24) and a second major surface (26), the first major surface comprising a first portion and a second portion; an array retaining member (28) extending from the first portion of the first major surface of the extension member, the array retaining member comprising an array surface (30) having at least one microneedle (32) extending from the array surface; and pressure sensitive adhesive (34) disposed on the second portion of the first major surface of the extension member to facilitate the adhesive attachment of the device to mammalian skin when the at least one microneedle is inserted through the stratum corneum.Type: ApplicationFiled: December 5, 2005Publication date: May 8, 2008Applicant: 3M Innovative Properties CompanyInventors: Chad J. Carter, Franklyn L. Frederickson, Richard G. Hansen, John R. Hart, Donald T. Landin, Jeffrey H. Tokie, David J. Wirtanen
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Patent number: 6499209Abstract: The present invention provides internally damped stators, rotors, and transformers; internally damped cores from which they may be made; and a method of making the aforementioned.Type: GrantFiled: October 16, 2000Date of Patent: December 31, 2002Assignee: 3M Innovative Properties CompanyInventors: Donald T. Landin, Gordon G. Johnson, Jeffrey W. McCutcheon, Larry S. Hilderbrand
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Vibration and shock attenuating articles and a method of attenuating vibrations and shocks therewith
Publication number: 20010044023Abstract: The present invention relates to a vibration attenuating article that has a non-tacky film covering enclosing all or a significant portion of the surface of a vibration attenuating material, wherein at least a portion of the vibration attenuating surface covered by the film covering is a three dimensional surface. A layer of adhesive must be present on at least a portion of the exterior film covering when all of the vibration attenuating material is covered by the exterior film covering.Type: ApplicationFiled: March 30, 2001Publication date: November 22, 2001Applicant: 3M Innovative Properties CompanyInventors: Gordon G. Johnson, Donald T. Landin, Michael A. Jung, Jeffrey W. McCutcheon -
Patent number: 6251493Abstract: The present invention relates to a vibration attenuating article that has a non-tacky film covering enclosing all or a significant portion of the surface of a vibration attenuating material, wherein at least a portion of the vibration attenuating surface covered by the film covering is a three dimensional surface. A layer of adhesive must be present on at least a portion of the exterior film covering when all of the vibration attenuating material is covered by the exterior film covering.Type: GrantFiled: April 8, 1996Date of Patent: June 26, 2001Assignee: 3M Innovative Properties CompanyInventors: Gordon G. Johnson, Donald T. Landin, Michael A. Jung, Jeffrey W. McCutcheon
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Patent number: 6191510Abstract: The present invention provides internally damped stators, rotors, and transformers; internally damped cores from which they may be made; and a method of making the aforementioned.Type: GrantFiled: December 19, 1997Date of Patent: February 20, 2001Assignee: 3M Innovative Properties CompanyInventors: Donald T. Landin, Gordon G. Johnson, Jeffrey W. McCutcheon, Larry S. Hilderbrand
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Patent number: 6132882Abstract: The present invention provides a damped glass and/or plastic laminate which damps both sounds and vibrations which is particularly useful for vehicle windows such as automobile windows, aircraft windows, watercraft windows, etc.; office building windows; airport windows; etc. The laminate comprises outer rigid layers such as glass or plastic and at least one inner layer of vibration damping material and a flexible plastic material such as polyvinyl butyral.Type: GrantFiled: December 16, 1996Date of Patent: October 17, 2000Assignee: 3M Innovative Properties CompanyInventors: Donald T. Landin, Boris V. Gregl, Thomas Coratti
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Patent number: 5851327Abstract: A method for vibrationally damping an article that is subject to resonant vibrations comprises the steps of providing a vibration damper and applying the vibration damper to the article to damp the resonant vibrations. The vibration damper comprises an acrylate viscoelastic vibration damping material and an effective amount of hydrophobic silica. The invention also relates to vibration dampers that utilize the acrylate viscoelastic vibration damping material as well as articles that incorporate the vibration dampers.Type: GrantFiled: November 13, 1995Date of Patent: December 22, 1998Assignee: Minnesota Mining and Manufacturing CompanyInventor: Donald T. Landin
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Patent number: 5725931Abstract: The present invention provides a constrained layer damper having slits and/or cutout(s) therein, which provides improved vibration damping performance. The constrained layer damper of the invention is useful, for example, for damping rotatable spacer articles and also rotatable storage media such as compact disks.Type: GrantFiled: November 3, 1995Date of Patent: March 10, 1998Assignee: Minnesota Mining and Manufacturing CompanyInventors: Donald T. Landin, Shwi-Long Hwang
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Patent number: 5691037Abstract: The present invention relates to a vibration damped laminate articles having improved force (torque and/or pressure and/or stress) retention, a method of making one article type and novel tools used to make the one article type. The first laminate comprises at least one layer of damping material between at least two substrate layers. At least one deformation area is present in the laminate wherein the substrate(s) are plastically deformed such that they are closer than non-deformed areas of the substrate and wherein the damping material has less mass than in a non-deformed area of the article; the deformation areas providing the areas of good force retention, for an attachment device attached thereto. The second laminate, which is not deformed, contains an additive of sufficient modulus, diameter and loading, in a vibration damping layer to provide improved force retention.Type: GrantFiled: July 3, 1996Date of Patent: November 25, 1997Assignee: Minnesota Mining and Manufacturing CompanyInventors: Jeffrey W. McCutcheon, Donald T. Landin
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Patent number: 5538774Abstract: The present invention provides a method for internally damping a rotatable storage article which is subject to resonant vibrations. More specifically, the present invention provides a method of improving the damping properties of a rotatable storage article by introducing a viscoelastic material as an inner layer(s) of the rotatable storage article. The invention also provides the damped rotatable storage articles themselves.Type: GrantFiled: July 29, 1994Date of Patent: July 23, 1996Assignee: Minnesota Mining and Manufacturing CompanyInventors: Donald T. Landin, Jeffrey W. McCutcheon
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Patent number: 5474840Abstract: A method for vibrationally damping an article that is subject to resonant vibrations comprises the steps of providing a vibration damper and applying the vibration damper to the article to damp the resonant vibrations. The vibration damper comprises an acrylate viscoelastic vibration damping material and an effective amount of hydrophobic silica. The invention also relates to vibration dampers that utilize the acrylate viscoelastic vibration damping material as well as articles that incorporate the vibration dampers.Type: GrantFiled: July 29, 1994Date of Patent: December 12, 1995Assignee: Minnesota Mining and Manufacturing CompanyInventor: Donald T. Landin
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Patent number: 5024880Abstract: Phase-separated, polymerized, cellular pressure-sensitive adhesive membranes possessing a high degree of compression recovery comprising from about 70 parts to about 98 parts of an acrylic polymer containing at least about 75 parts of an alkyl acrylate monomer, the alkyl groups of which have an average of 4 to 12 carbon atoms, and from 0 to about 25 parts of a monoethylenically unsaturated polar copolymerizable monomer, and correspondingly, from about 30 parts to about 2 parts of a saturated hydrocarbon elastomer or blend of hydrocarbon elastomers containing at least one segment having a lower glass transition temperature than the acrylic copolymer. The adhesive has at least a first phase and a second phase, the first phase consisting primarily of the elastomer, and at least one phase is a continuous phase.Type: GrantFiled: January 3, 1990Date of Patent: June 18, 1991Assignee: Minnesota Mining and Manufacturing CompanyInventors: George F. Veasley, Jurgen Klingen, Donald T. Landin
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Patent number: 4985488Abstract: Normally tacky and pressure-sensitive adhesive, having excellent long-term adhesion to plasticized vinyl substrates, is prepared from a representative blend of dioctyl phthalate plasticizer and a copolymer of isoctyl acrylate, N-vinyl pryrrolidone, and acrylic acid; alternatives for each component are disclosed. In a preferred embodiment of the invention, the adhesive is coated in a thin layer on a sheet backing material to form a normally tacky and pressure-sensitive adhesive tape.Type: GrantFiled: April 16, 1990Date of Patent: January 15, 1991Assignee: Minnesota Mining and Manufacturing CompanyInventor: Donald T. Landin
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Patent number: 4946742Abstract: Normally tacky and pressure-sensitive adhesive, having excellent long-term adhesion to plasticized vinyl substrates, is prepared from a representative blend of dioctyl phthalate plasticizer and a copolymer of isooctyl acrylate, N-vinyl pyrrolidone, and acrylic acid; alternatives for each component are disclosed. In a preferred embodiment of the invention, the adhesive is coated in a thin layer on a sheet backing material to form a normally tacky and pressure-sensitive adhesive tape.Type: GrantFiled: May 20, 1988Date of Patent: August 7, 1990Assignee: Minnesota Mining and Manufacturing CompanyInventor: Donald T. Landin
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Patent number: RE36806Abstract: The present invention provides a method for internally damping a rotatable storage article which is subject to resonant vibrations. More specifically, the present invention provides a method of improving the damping properties of a rotatable storage article by introducing a viscoelastic material as an inner layer(s) of the rotatable storage article. The invention also provides the damped rotatable storage articles themselves.Type: GrantFiled: May 17, 1999Date of Patent: August 1, 2000Assignee: 3M Innovative Properties CompanyInventors: Donald T. Landin, Jeffrey W. McCutcheon
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Patent number: D893974Type: GrantFiled: January 4, 2019Date of Patent: August 25, 2020Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: Lijun Zu, Jonathan C. Dilley, Donald T. Landin, Anthony D. Deutsch, Andrew C. Anderson, Craig R. Sykora