Patents by Inventor Greggory S. Bennett

Greggory S. Bennett 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).

  • Patent number: 6254954
    Abstract: The invention relates to a pressure-sensitive adhesive tape with improved room temperature handleability comprising an adhesive layer with at least one exposed surface and optionally a backing, wherein the pressure-sensitive adhesive layer comprises an epoxy/polyester based pressure sensitive adhesive which is crosslinkable upon exposure to actinic or e-beam irradiation and optionally heat, and comprises (i) 30-80% by weight of a polyester component comprising one or more amorphous polyesters compounds, (ii) 20-70% by weight of an epoxy component comprising one or more epoxy resins and/or monomers, (iii) 0-50% by weight of a hydroxyl-functional component containing one or more hydroxyl-containing compounds having a hydroxyl functionality of at least 1, and (iv) an effective amount of a photoinitiator component for crosslinking the pressure-sensitive adhesive, whereby the weight percentages refer to the total mass of components (i)-(iv) and add up to 100 wt.
    Type: Grant
    Filed: August 26, 1999
    Date of Patent: July 3, 2001
    Assignee: 3M Innovative Properties Company
    Inventors: Greggory S. Bennett, Clayton A. George, Guido Hitschmann, Alain H. Lamon
  • Patent number: 6235387
    Abstract: A semiconductor wafer processing tape includes a permanent backing and a layer of a nonpressure sensitive adhesive. The tapes are useful for wafer grinding and/or wafer dicing applications. The nonpressure sensitive adhesive includes a copolymer of at least one of a first monoethylenically unsaturated monomer, at least one of a second monoethylenically unsaturated monomer, and at least one copolymerizable nonionic crosslinking agent; wherein the second monoethylenically unsaturated monomer is a reinforcing monomer having a homopolymer glass transition temperature higher than that of the first monoethylenically unsaturated monomer. A method of processing semiconductor wafers is also provided.
    Type: Grant
    Filed: March 30, 1998
    Date of Patent: May 22, 2001
    Assignee: 3M Innovative Properties Company
    Inventors: Richard E. Bennett, Louis E. Winslow, Greggory S. Bennett, Karunasena A. Alahapperuma, Cheryl L. Moore
  • Patent number: 6168682
    Abstract: The invention refers to a method of manufacturing an optical recording medium comprising a first member having a first substrate, a first information storing layer, a first exposed surface and a first inner surface, a second member having a second substrate, a second exposed surface, a second inner surface and optionally a second information storing layer, and an optionally transparent pressure-sensitive adhesive layer interposed between the first inner surface and the second inner surface, said method comprising 1. attaching the pressure-sensitive adhesive layer to the inner surface of one of the members and 2. adhering the inner surface of the other member to the exposed surface of the adhesive layer, wherein the size of any bubbles formed during above steps 1. and/or 2. at the interface between the first and/or second inner surface, respectively, and the pressure-sensitive adhesive layer and/or the disappearance rate of the bubbles are controlled so that the bubbles are removed in less than 30 minutes.
    Type: Grant
    Filed: February 10, 1998
    Date of Patent: January 2, 2001
    Assignee: 3M Innovative Properties Company
    Inventors: Greggory S. Bennett, Yolanda Griebenow, Guido Hitschmann, Kurt C. Melancon, Wolfgang G. Schoeppel
  • Patent number: 6126865
    Abstract: Pressure sensitive adhesives and heat activatable adhesives that are the reaction product of an acrylic acid ester of a monohydric alcohol whose homopolymer has a T.sub.g less than 0.degree. C.; 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.; 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 an electrically conductive agent.
    Type: Grant
    Filed: March 11, 1997
    Date of Patent: October 3, 2000
    Assignee: 3M Innovative Properties Company
    Inventors: Christopher A. Haak, Michael A. Kropp, Greggory S. Bennett
  • Patent number: 5902836
    Abstract: Solute polymers in solvent monomers form a coatable syrup that can be cured to a viscoelastomeric material when radiation-sensitive .alpha.-cleaving 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 in situ or be added thereto to form the syrup.
    Type: Grant
    Filed: August 23, 1995
    Date of Patent: May 11, 1999
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Greggory S. Bennett, Gaddam N. Babu, Kejian Chen, Louis E. Winslow, George F. Vesley, Patrick G. Zimmerman
  • Patent number: 5883149
    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: May 22, 1998
    Date of Patent: March 16, 1999
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Greggory S. Bennett, Christopher A. Haak, Craig A. Gustafson
  • 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: 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: 5741543
    Abstract: This invention relates to a process in which a composition is coated onto a substrate and crosslinked so as to form a PSA by means of polymerizing free radically polymerizable monomers from covalently attached pendent unsaturation in the polymer component of the composition. The coating can carried out by a wide variety of industrial methods because the process of the invention allows for compositions with a wide degree of possible viscosities.
    Type: Grant
    Filed: July 18, 1996
    Date of Patent: April 21, 1998
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Louis E. Winslow, Greggory S. Bennett, Gaddam N. Babu, Paul Hattam, Michael L. Tumey, Bhaskar V. Velamakanni
  • Patent number: 5708110
    Abstract: A pressure sensitive adhesive that includes the polymerization product of:(a) 25-97 parts by weight of an acrylic acid ester of a monohydric alcohol whose homopolymer has a T.sub.g less than 0.degree. C.;(b) 3-75 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(c) 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. The relative amounts of the acrylic acid ester, the non-polar ethylenically unsaturated monomer, and the polar ethylenically unsaturated monomer are chosen such that the 90.degree. peel adhesion of the pressure sensitive adhesive to a polypropylene surface is at least 2 lbs/0.5 in. after a 72 hour dwell at room temperature as measured according to Test Procedure B.
    Type: Grant
    Filed: February 6, 1997
    Date of Patent: January 13, 1998
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Greggory S. Bennett, Christopher A. Haak
  • Patent number: 5708109
    Abstract: A pressure sensitive adhesive that includes the polymerization product of:(a) 25-97 parts by weight of an acrylic acid ester of a monohydric alcohol whose homopolymer has a T.sub.g less than 0.degree. C.;(b) 3-75 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(c) 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. The relative amounts of the acrylic acid ester, the non-polar ethylenically unsaturated monomer, and the polar ethylenically unsaturated monomer are chosen such that the 90.degree. peel adhesion of the pressure sensitive adhesive to a surface provided with 1.5.+-.0.25 mg/in.sup.2 oil is greater than zero after a 10 second dwell at room temperature as measured according to Test Procedure B.
    Type: Grant
    Filed: February 6, 1997
    Date of Patent: January 13, 1998
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Greggory S. Bennett, Christopher A. Haak
  • Patent number: 5683798
    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: April 25, 1996
    Date of Patent: November 4, 1997
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Greggory S. Bennett, Christopher A. Haak, Craig A. Gustafson
  • Patent number: 5654387
    Abstract: Pressure sensitive adhesives and tackified pressure sensitive adhesives that are the polymerization product of an acrylic acid ester of a monohydric alcohol whose homopolymer has a T.sub.g less than 0.degree. C.; 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 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.
    Type: Grant
    Filed: August 16, 1996
    Date of Patent: August 5, 1997
    Assignee: Minnesota Mining And Manufacturing Company
    Inventors: Greggory S. Bennett, Christopher A. Haak, Craig A. Gustafson
  • Patent number: 5620795
    Abstract: Pressure sensitive adhesives and heat activatable adhesives that are the reaction product of an acrylic acid ester of a monohydric alcohol whose homopolymer has a T.sub.g less than 0.degree. C.; 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.; 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 an electrically conductive agent.
    Type: Grant
    Filed: July 10, 1995
    Date of Patent: April 15, 1997
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Christopher A. Haak, Michael A. Kropp, Greggory S. Bennett
  • Patent number: 5616670
    Abstract: A pressure sensitive adhesive that includes the polymerization product of:(a) 25-97 parts by weight of an acrylic acid ester of a monohydric alcohol whose homopolymer has a T.sub.g less than 0.degree. C.;(b) 3-75 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(c) 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. The relative amounts of the acrylic acid ester, the non-polar ethylenically unsaturated monomer, and the polar ethylenically unsaturated monomer are chosen such that the 90.degree. peel adhesion of the pressure sensitive adhesive to a surface provided with 1.5.+-.0.25 mg/in.sup.2 oil is greater than zero after a 10 second dwell at room temperature as measured according to Test Procedure B.
    Type: Grant
    Filed: September 29, 1995
    Date of Patent: April 1, 1997
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Greggory S. Bennett, Christopher A. Haak
  • Patent number: 5602221
    Abstract: A pressure sensitive adhesive that includes the polymerization product of:(a) 25-97 parts by weight of an acrylic acid ester of a monohydric alcohol whose homopolymer has a T.sub.g less than 0.degree. C.;(b) 3-75 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(c) 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. The relative amounts of the acrylic acid ester, the non-polar ethylenically unsaturated monomer, and the polar ethylenically unsaturated monomer are chosen such that the 90.degree. peel adhesion of the pressure sensitive adhesive to a polypropylene surface is at least 2 lbs/0.5 in. after a 72 hour dwell at room temperature as measured according to Test Procedure B.
    Type: Grant
    Filed: September 29, 1995
    Date of Patent: February 11, 1997
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Greggory S. Bennett, Christopher A. Haak
  • Patent number: 5506279
    Abstract: The invention provides novel acrylamide functional disubstituted acetyl aryl ketones and a process for their preparation in high yields uncontaminated by difunctional material. The invention further provides photocrosslinkable compositions comprising one or more ethylenically-unsaturated monomers and as photoinitiator the acrylamide functional disubstituted acetyl aryl ketone of the invention. The compositions are useful for the preparation of films and coatings, particularly pressure-sensitive adhesive coatings.
    Type: Grant
    Filed: May 3, 1994
    Date of Patent: April 9, 1996
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Gaddam N. Babu, Greggory S. Bennett, Kejian Chen, Steven M. Heilmann, Howell K. Smith, II, Louis E. Winslow