Patents Represented by Attorney, Agent or Law Firm Walter N. Kirn
  • Patent number: 5776432
    Abstract: Pharmaceutical solution aerosol formulations comprising beclomethasone 17,21 dipropionate, ethanol, and a propellant selected from the group consisting of 1,1,1,2-tetrafluoroethane, 1,1,1,2,3,3,3-heptafluoropropane, and a mixture thereof.
    Type: Grant
    Filed: May 31, 1995
    Date of Patent: July 7, 1998
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Robert K. Schultz, David W. Schultz
  • Patent number: 5773375
    Abstract: There is provided thermally stabilized polypropylene melt-blown microfiber acoustical insulation web which has a resistance to thermal degradation at a temperature of 135.degree. C. for at least 10 days. The polypropylene has a thermal stabilizer uniformly distributed within the melt-blown microfiber polymer which polymer when produced is subject to thermal and/or catalytic degradation in the absence of significant levels of thermal stabilizer or antioxidant.
    Type: Grant
    Filed: May 29, 1996
    Date of Patent: June 30, 1998
    Inventors: Michael D. Swan, Ruth A. Ebbens
  • Patent number: 5772085
    Abstract: A metered dose dispensing valve is described that is particularly suitable for dispensing metered volumes of a pressurised aerosol formulation. The valve comprises a chamber, and a valve stem extending into the chamber and movable relative to the chamber between non-dispensing and dispensing positions.
    Type: Grant
    Filed: March 8, 1996
    Date of Patent: June 30, 1998
    Assignee: Minnesota Mining and Manufacturing
    Inventors: Andrew M. Bryant, Nicholas C. Miller, Peter D. Hodson
  • Patent number: 5773374
    Abstract: Composite films and film laminates comprising at least one elastomeric core and a surrounding nonelastomeric matrix preferably prepared by coextrusion. The film when stretched and allowed to recover will create an elastomeric composite.
    Type: Grant
    Filed: March 20, 1997
    Date of Patent: June 30, 1998
    Inventors: Leigh E. Wood, Dennis L. Krueger, Michael R. Gorman, Randall L. Alberg
  • Patent number: 5773485
    Abstract: Solute polymers in solvent monomers form a coatable syrup that can be cured to a viscoelastomeric material when radiation-sensitive hydrogen abstracting groups in either the polymer or one of the monomers are exposed to ultraviolet radiation. The solute polymers can be formed from the solvent monomers.
    Type: Grant
    Filed: August 23, 1995
    Date of Patent: June 30, 1998
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Greggory S. Bennett, Louis E. Winslow, Gaddam N. Babu
  • Patent number: 5766473
    Abstract: Articles having a complex geometric configuration have hydrophilicity imparted to at least a portion of surfaces of the articles while substantially retaining the complex geometric configuration. The hydrophilicity is imparted by an extremely thin, self-interlocking shell of tactic, hydrophilic poly(vinyl alcohol) enveloping the surfaces. A tactic poly(vinyl alcohol) precursor applied to surfaces of the supporting structure is reacted in situ on the surfaces with a hydrolysis reagent to prepare the tactic, hydrophilic poly(vinyl alcohol) shell. The article having the hydrophilic shell is highly resistant to solvent washout. Hydrophilicity and hydrophobicity can be reversibly provided on regio-specific surfaces of the article. Hydrophilic porous supporting structures loaded with an enzyme system which catalyzes a reaction of a substrate, oxygen, and if necessary, water or moisture to consume oxygen are also described for oxygen scavenging in packages containing oxygen sensitive products.
    Type: Grant
    Filed: June 1, 1995
    Date of Patent: June 16, 1998
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Joan M. Strobel, David R. Gagnon
  • Patent number: 5766573
    Abstract: A self-propelling aerosol formulation which may be free from CFC's which comprises a medicament, 1,1,1,2-tetrafluoroethane, a surface active agent and at least one compound having a higher polarity than 1,1,1,2-tetrafluoroethane.
    Type: Grant
    Filed: January 16, 1997
    Date of Patent: June 16, 1998
    Assignee: Riker Laboratories, Inc.
    Inventors: Tarlochan S. Purewal, David J. Greenleaf
  • Patent number: 5766387
    Abstract: A barrier fabric laminate for use as a coating for a gel filled article is provided. The barrier fabric laminate comprises a fluid impermeable film and a polyurethane nonwoven web which has a friction value of less than 200 g and a fabric hand of less than 200 g. The polyurethane web is formed of fibers of less than about 50 .mu.m on average and preferably is formed with a fluorochemical melt additive by sequentially melt blowing the polyurethane web on a heated collecting drum and laminated by a nip formed by a heated nip roller and the collecting drum.
    Type: Grant
    Filed: October 25, 1996
    Date of Patent: June 16, 1998
    Inventors: Robert J. Wolf, Scott M. Purrington, John M. Brandner, David A. Olson, John F. Reed
  • Patent number: 5765256
    Abstract: A brush made from a nonwoven, thermally bonded bicomponent fiber web is described. The nonwoven brush of the invention includes a plurality of compressed annular sections assembled about a central carrier with each section made of a mat of bicomponent fibers which have been crimped and melt bonded. In a preferred embodiment, the brush will have a compacted density of between about 50 and about 250 kilograms per cubic meter. The fibers making up the compressed annular sections are preferably a combination of polyolefins (e.g. polypropylene and polyethylene) but may also include polyesters and other materials.
    Type: Grant
    Filed: February 9, 1996
    Date of Patent: June 16, 1998
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: James M. Allan, Barry A. Brandley
  • Patent number: 5763065
    Abstract: Multilayer microfibers of at least one layer of a hydrolytically degradable polymer and at least one layer of a water soluble polymer are disclosed. The articles have water resistance during preparation, storage, and use with mammals but are dispersible when submersed in water at conditions of elevated temperature, elevated pH, and during a single commercial laundry cycle. The articles solve both the problem of solid waste disposal prevalent with single use garments and the problem of repeated cleansing and recycling of multiple use garments. Contamination associated with the articles of the invention after their use will be disinfected during the commercial laundry cycle that is utilized to disperse the article.
    Type: Grant
    Filed: January 8, 1997
    Date of Patent: June 9, 1998
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Gregg A. Patnode, Denise R. Rutherford, Dietmar Schlei
  • Patent number: 5763083
    Abstract: There is provided a cellulosic-based fiber granule with added non self-associating particulates or fibers. The resulting granule is free-flowing with a densified outer surface and is capable of removing substantially all oil from a flat surface such as a floor. The granule is also capable of being incinerated by being formed substantially of organic materials. Cellulosic plant fibers form at least 10 percent up to 99 percent of the granule. There is also provided a method for forming the incineratable oil an absorbent, free-flowing granules.
    Type: Grant
    Filed: April 26, 1996
    Date of Patent: June 9, 1998
    Assignee: Minnesota Mining and Manufacturing Co.
    Inventor: Michael R. Berrigan
  • Patent number: 5764060
    Abstract: The guidance system of the invention includes at least two spaced, permanently magnetized regions that each produce a magnetic field. The two permanently magnetized regions can be provided at either side of another region that produces a magnetic field of less intensity than the permanently magnetized regions, and in one embodiment, the former region produces no magnetic field. The system may also include portable means for detecting the magnetic fields produced by the permanently magnetized regions, and that sensor may be mounted to a cane for use by a person. In another embodiment, the permanently magnetized regions contrast with either each other or the region that produces a magnetic field of less intensity, or have different surface characteristics, or both.
    Type: Grant
    Filed: March 11, 1996
    Date of Patent: June 9, 1998
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Bernard A. Gonzalez, Richard L. Patten
  • Patent number: 5764355
    Abstract: A device for holding a sample to be spectroscopically analyzed in which the sample is retained within a defined area. The device includes a receiving medium on which the sample is held. When this receiving medium is mounted in a frame (an optional feature), it extends across an aperture in the frame. In/on the receiving medium is a sample confining region that keeps any sample placed on the receiving medium from migrating outside a defined area. By keeping the sample within a defined area, quantitative measurements of the sample can be obtained.
    Type: Grant
    Filed: January 12, 1996
    Date of Patent: June 9, 1998
    Inventors: David R. Gagnon, Richard M. Pieper, James E. Aysta
  • Patent number: 5762868
    Abstract: An integral blood oxygenator and heat exchanger device for oxygenating and heating or cooling a patient's blood during heart bypass surgery. The device preferably includes a pleated blood filter disposed within a gap formed between the opposite ends of the blood oxygenating medium. A blood inlet manifold closely receives a tubular heat exchanging barrier and directs blood flow around the barrier to a blood outlet slot. The blood oxygenating medium covers the blood outlet slot so that blood must flow through the blood oxygenating medium before reaching the blood filter. A vent port and bypass port may be provided in the gap formed by the opposite ends of the blood oxygenating medium upstream of the blood filter.
    Type: Grant
    Filed: November 30, 1995
    Date of Patent: June 9, 1998
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Ronald J. Leonard
  • Patent number: 5760152
    Abstract: Insoluble supports are prepared which possess high surface areas and efficiently dispersed isocyanate groups. These reactive supports are useful for covalently binding proteins which preferably are enzymes and provide catalysts for conducting organic reactions.
    Type: Grant
    Filed: May 30, 1995
    Date of Patent: June 2, 1998
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Steven M. Heilmann, Gary J. Drtina, Louis C. Haddad, Frederick W. Hyde, Dean M. Moren, Robert A. Pranis
  • Patent number: 5756747
    Abstract: Novel 1H-imidazo?4,5-c!quinolin-4-amines are disclosed. The compounds function as antiviral agents and they are potential synthetic intermediates in the preparation of known antiviral agents and labeled known antiviral agents. Processes for the preparation of the compounds, methods for their antiviral use, and methods of inducing interferon biosynthesis, are also described.
    Type: Grant
    Filed: May 31, 1995
    Date of Patent: May 26, 1998
    Assignee: Riker Laboratories, Inc.
    Inventor: John F. Gerster
  • Patent number: 5757016
    Abstract: The present invention includes a method of creating a shaped image in a workpiece using a flashlamp, the method comprising positioning a template proximate the workpiece and directing radiation emitted by the flashlamp during a short pulse of less than approximately 100 .mu.sec through the template toward the workpiece.
    Type: Grant
    Filed: April 7, 1995
    Date of Patent: May 26, 1998
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Douglas S. Dunn, Jeffrey B. Hill, Andrew J. Ouderkirk
  • Patent number: 5756584
    Abstract: A pressure sensitive adhesive that includes:(a) the polymerization product of:(i) 25-98 parts by weight of an acrylic acid ester of a monohydric alcohol whose homopolymer has a T.sub.g less than 0.degree. C.;(ii) 2-75 parts by weight of a non-polar ethylenically unsaturated monomer whose homopolymer has a solubility parameter of no greater than 10.50 and a T.sub.g greater than 15.degree. C.; and(iii) 0-5 parts by weight of a polar ethylenically unsaturated monomer whose homopolymer has a solubility parameter of greater than 10.50 and a T.sub.g greater than 15.degree. C.; and(b) at least one tackifier that is miscible in the polymerization product at room temperature.
    Type: Grant
    Filed: January 3, 1997
    Date of Patent: May 26, 1998
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Greggory S. Bennett, Christopher A. Haak, Craig A. Gustafson
  • Patent number: 5756246
    Abstract: This invention is a photoreceptor element comprising, in order, an electroconductive support, a photoconductive layer, a barrier, and, preferably, a release layer. The barrier is a two layer system comprising:1) adjacent to the photoconductive layer, a non-conductive, charge blocking layer, and2) over the non-conductive, charge blocking layer, an electrically conductive barrier layer.
    Type: Grant
    Filed: July 18, 1997
    Date of Patent: May 26, 1998
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Edward J. Woo, David A. Ender
  • Patent number: D395509
    Type: Grant
    Filed: November 14, 1995
    Date of Patent: June 23, 1998
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Joy A. Packard, Thomas J. Packard