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).

  • Publication number: 20130065490
    Abstract: 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: Application
    Filed: September 12, 2011
    Publication date: March 14, 2013
    Inventors: Donald T. Landin, James L. McArdie
  • Publication number: 20090181075
    Abstract: 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: Application
    Filed: July 13, 2006
    Publication date: July 16, 2009
    Inventors: Ryan D. Gordon, Peter M. Seiler, Donald T. Landin, Stefan Bracht, Wolfgang Eder
  • Publication number: 20080108958
    Abstract: 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: Application
    Filed: December 5, 2005
    Publication date: May 8, 2008
    Applicant: 3M Innovative Properties Company
    Inventors: Chad J. Carter, Franklyn L. Frederickson, Richard G. Hansen, John R. Hart, Donald T. Landin, Jeffrey H. Tokie, David J. Wirtanen
  • Patent number: 6499209
    Abstract: 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: Grant
    Filed: October 16, 2000
    Date of Patent: December 31, 2002
    Assignee: 3M Innovative Properties Company
    Inventors: Donald T. Landin, Gordon G. Johnson, Jeffrey W. McCutcheon, Larry S. Hilderbrand
  • Publication number: 20010044023
    Abstract: 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: Application
    Filed: March 30, 2001
    Publication date: November 22, 2001
    Applicant: 3M Innovative Properties Company
    Inventors: Gordon G. Johnson, Donald T. Landin, Michael A. Jung, Jeffrey W. McCutcheon
  • Patent number: 6251493
    Abstract: 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: Grant
    Filed: April 8, 1996
    Date of Patent: June 26, 2001
    Assignee: 3M Innovative Properties Company
    Inventors: Gordon G. Johnson, Donald T. Landin, Michael A. Jung, Jeffrey W. McCutcheon
  • Patent number: 6191510
    Abstract: 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: Grant
    Filed: December 19, 1997
    Date of Patent: February 20, 2001
    Assignee: 3M Innovative Properties Company
    Inventors: Donald T. Landin, Gordon G. Johnson, Jeffrey W. McCutcheon, Larry S. Hilderbrand
  • Patent number: 6132882
    Abstract: 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: Grant
    Filed: December 16, 1996
    Date of Patent: October 17, 2000
    Assignee: 3M Innovative Properties Company
    Inventors: Donald T. Landin, Boris V. Gregl, Thomas Coratti
  • Patent number: 5851327
    Abstract: 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: Grant
    Filed: November 13, 1995
    Date of Patent: December 22, 1998
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Donald T. Landin
  • Patent number: 5725931
    Abstract: 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: Grant
    Filed: November 3, 1995
    Date of Patent: March 10, 1998
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Donald T. Landin, Shwi-Long Hwang
  • Patent number: 5691037
    Abstract: 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: Grant
    Filed: July 3, 1996
    Date of Patent: November 25, 1997
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Jeffrey W. McCutcheon, Donald T. Landin
  • Patent number: 5538774
    Abstract: 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: Grant
    Filed: July 29, 1994
    Date of Patent: July 23, 1996
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Donald T. Landin, Jeffrey W. McCutcheon
  • Patent number: 5474840
    Abstract: 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: Grant
    Filed: July 29, 1994
    Date of Patent: December 12, 1995
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Donald T. Landin
  • Patent number: 5024880
    Abstract: 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: Grant
    Filed: January 3, 1990
    Date of Patent: June 18, 1991
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: George F. Veasley, Jurgen Klingen, Donald T. Landin
  • Patent number: 4985488
    Abstract: 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: Grant
    Filed: April 16, 1990
    Date of Patent: January 15, 1991
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Donald T. Landin
  • Patent number: 4946742
    Abstract: 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: Grant
    Filed: May 20, 1988
    Date of Patent: August 7, 1990
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Donald T. Landin
  • Patent number: RE36806
    Abstract: 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: Grant
    Filed: May 17, 1999
    Date of Patent: August 1, 2000
    Assignee: 3M Innovative Properties Company
    Inventors: Donald T. Landin, Jeffrey W. McCutcheon
  • Patent number: D893974
    Type: Grant
    Filed: January 4, 2019
    Date of Patent: August 25, 2020
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Lijun Zu, Jonathan C. Dilley, Donald T. Landin, Anthony D. Deutsch, Andrew C. Anderson, Craig R. Sykora