Patents Represented by Attorney, Agent or Law Firm Steven E. Skolnick
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Patent number: 5304224Abstract: A tear resistant coated abrasive article comprises a backing which comprises a film having at least three layers situated one on the other in a parallel array. The layers occur essentially randomly in the array and are individually selected from a stiff polyester or copolyester and a ductile sebacic acid based copolyester. An abrasive layer is on a surface of the backing.Type: GrantFiled: October 1, 1992Date of Patent: April 19, 1994Assignee: Minnesota Mining and Manufacturing CompanyInventor: Kimberly K. Harmon
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Patent number: 5288359Abstract: A method for adhesively bonding an at least partially hollow first member to a second member received interiorly of the first member. Adhesive is applied to the second member and allowed to attain a substantially nonflowable condition. The first and second members are positioned such that the first member at least partially overlies the nonflowable adhesive on the second member. The adhesive is reactivated and then cooled to adhesively bond the first and second members together. An adhesive dispenser for applying the adhesive to the second member is also disclosed.Type: GrantFiled: August 7, 1992Date of Patent: February 22, 1994Assignee: Minnestoa Mining and Manufacturing CompanyInventors: Charles W. Stobbie, IV, Walter C. Pearson, Gerald W. Quinn
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Patent number: 5270088Abstract: A graphic package comprises a plurality of graphics including at least a first graphic and a second graphic. The package further includes a dual function separating layer which is intermediate the first and second graphics. The separating layer comprises a substrate having an upper surface and a lower surface. A release coating is provided on the upper surface of the substrate for releasably retaining the first graphic on the substrate and an adhesive is provided on the lower surface of the substrate for temporarily bonding the second graphic to the substrate. The graphic package may be a pad or a roll.Type: GrantFiled: March 18, 1992Date of Patent: December 14, 1993Assignee: Minnesota Mining and Manufacturing CompanyInventor: Peter B. Grasse
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Patent number: 5187015Abstract: An article capable of repeatedly releasing ice from its surface is provided. Also provided is a composition capable of providing such release. The article and composition employ a polysiloxane having terminal ethylenic unsaturation, a polyhydrosiloxane, a platinum- or other metal-containing hydrosilation catalyst, and optionally, a non-functional polysiloxane free from ethylenic unsaturation. When applied to a surface and crosslinked, the article has a coating having a coating weight of at least 3 g/m.sup.2.Type: GrantFiled: February 17, 1989Date of Patent: February 16, 1993Assignee: Minnesota Mining and Manufacturing CompanyInventors: Elaine M. Yorkgitis, Kurt C. Melancon
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Patent number: 5183597Abstract: A microstructure-bearing composite plastic article can be superior, both in microstructure and in physical properties, when it is a composite of a tough, flexible substrate, at a surface of which is microstructure formed of a cured oligomeric resin having hard segments and soft segments, which cured resin is substantially confined to the microstructure portion of the composite. Such a composite plastic article can be made by depositing an uncured oligomeric resin composition onto a master negative molding surface, filling the cavities by moving a bead of the composition between a substrate and the master, and curing the deposited composition by ultraviolet radiation while keeping the temperature during curing from rising not more than about 30.degree. C. above a typical use temperature of the finished composite plastic article.Type: GrantFiled: February 25, 1991Date of Patent: February 2, 1993Assignee: Minnesota Mining and Manufacturing CompanyInventor: Shih-Lai Lu
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Patent number: 5182255Abstract: Shaped articles of superconducting YBa.sub.2 Cu.sub.3 O.sub.7 are made by a sol-gel process from a sol that is a mixture of an aqueous solution of barium hydroxide, a compatible aqueous solution of copper carboxylate, and at least one of a compatible aqueous solution of yttrium carboxylate and an aqueous suspension of colloidal oxide of yttrium. The sol has a Y:Ba:Cu molar ratio of approximately 1:2:3. After adjusting the concentration of the sol, it is formed into a shaped article which is dried and then fired to convert it into orthorhombic superconducting YBa.sub.2 Cu.sub.3 O.sub.7.Type: GrantFiled: February 28, 1991Date of Patent: January 26, 1993Assignee: Minnesota Mining and Manufacturing Co.Inventor: Kenton D. Budd
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Patent number: 5175030Abstract: A microstructure-bearing composite plastic article can be superior, both in microstructure and in physical properties, when it is a composite of a tough, flexible substrate, at a surface of which is microstructure formed of a cured oligomeric resin having hard segments and soft segments, which cured resin is substantially confined to the microstructure portion of the composite. Such a composite plastic article can be made by depositing an uncured oligomeric resin composition onto a master negative molding surface in an amount barely sufficient to fill the cavities of the master, filling the cavities by moving a bead of the composition between a substrate and the master, and curing the deposited composition by ultraviolet radiation while keeping the temperature during curing to not more than 50.degree. C. above the typical use temperature of the finished composite plastic article.Type: GrantFiled: December 8, 1989Date of Patent: December 29, 1992Assignee: Minnesota Mining and Manufacturing CompanyInventors: Shih-Lai Lu, Todd R. Williams
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Patent number: 5169716Abstract: The invention provides an encapsulant composition capable of use with signal transmission devices, such as electrical or optical cable. The composition is the extended reaction product of an admixture of an anhydride functionalized composition and a crosslinking agent.Type: GrantFiled: May 11, 1989Date of Patent: December 8, 1992Assignee: Minnesota Mining and Manufacturing CompanyInventors: Thomas S. Croft, Hartwick A. Haugen
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Patent number: 5164245Abstract: A metallized multilayer film comprising a first substrate layer, a second substrate layer, and a layer of metal. The first substrate layer comprises from 0 to about 40 parts by weight poly(vinylidine fluoride) and, correspondingly, from 100 to about 60 parts by weight poly(methyl methacrylate). The second substrate layer comprises from about 70 to 100 parts by weight poly(vinylidine fluoride) and, correspondingly, from about 30 to 0 parts by weight poly(methyl methacrylate).Type: GrantFiled: May 15, 1991Date of Patent: November 17, 1992Assignee: Minnesota Mining and Manufacturing CompanyInventor: Kohji Suzuki
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Patent number: 5137984Abstract: A mixture of hydroxy functional polymers which can be used to form isocyanate prepolymers which are non-hairing at application temperature are disclosed. Examples of suitable mixtures of hydroxy functional polymers that can be used to form the prepolymers are:(1) linear polyester blends, comprising a first and second polyester wherein each polyester is the reaction product of a polyol and a polyacid, whereina+b<or=4, c+d>or=6a+b>4 or .ltoreq.6, c+d>or=10a+b>6 or .ltoreq.Type: GrantFiled: May 15, 1990Date of Patent: August 11, 1992Assignee: Minnesota Mining and Manufacturing Co.Inventors: Lani S. Kangas, Charles W. Stobbie, IV
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Patent number: 5135797Abstract: A decorative film which is capable of being fused to an ethylene-propylene diene monomer. The film comprises a substrate formed from an ethylene/acrylic acid copolymer or an ethylene/ethyl acrylate copolymer and a synthetic resin elastomer film decoratable layer which is bonded to the substrate by an adhesive.Type: GrantFiled: May 15, 1991Date of Patent: August 4, 1992Assignee: Minnesota Mining and Manufacturing CompanyInventor: Makoto Sasaki
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Patent number: 5133516Abstract: A conformable drag reduction article is provided having a patterned surface capable of reducing drag resistance by fluid flowing thereover.Type: GrantFiled: January 22, 1991Date of Patent: July 28, 1992Assignee: Minnesota Mining and Manufacturing Co.Inventors: Francis J. Marentic, Terry L. Morris
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Patent number: 5124184Abstract: A film comprising a combination of a thermotropic liquid crystalline polymer and a host polymer. The surface of the film comprises a plurality of discrete protrusions or peaks whose height can be tailored to provide a desired surface roughness.Type: GrantFiled: October 11, 1990Date of Patent: June 23, 1992Assignee: Minnesota Mining and Manufacturing Co.Inventor: Chiu P. Wong
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Patent number: 5118562Abstract: Constrained layer damping structures are often based on viscoelastic layers of iso-octyl acrylate:acrylic acid or analogous copolymers. As the acrylic acid content is increased, the peak damping temperature also increases; unfortunately, however, the copolymer becomes more brittle and susceptible to shock, especially at low temperatures. Incorporating small amounts of rubbery polymer particles (especially core-shell polymers) in the viscoelastic copolymer alleviates this problem.Type: GrantFiled: September 24, 1990Date of Patent: June 2, 1992Assignee: Minnesota Mining and Manufacturing Co.Inventors: Roger W. Johnson, William D. Sell, Charles D. Wright
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Patent number: 5057371Abstract: An article having an aziridine-modified surface is provided. Functional layers may be applied to the modified surface. Such layers exhibit good adhesion to the article.Type: GrantFiled: June 14, 1985Date of Patent: October 15, 1991Assignee: Minnesota Mining and Manufacturing CompanyInventors: George Canty, Robert E. Jones
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Patent number: 5053436Abstract: Hollow, polymeric, acrylate, infusible, inherently tacky, solvent-insoluble, solvent-dispersible, elastomeric pressure-sensitive adhesive microspheres having an average diameter of at least about 1 micrometer. Preferred microspheres are those wherein a majority of the hollow microspheres contain at least one of interior void having a diameter of at least 10% of the diameter of the microsphere.These hollow microspheres are useful as repositionable pressure-sensitive adhesives. The invention also provides pressure-sensitive adhesives consisting essentially of such hollow microspheres. Aqueous suspensions of these microspheres, processes for their preparation, spray repositionable pressure-sensitive adhesive compositions, and microsphere-coated sheet materials are also provided. Surprisingly, hollow microspheres of the invention show reduced or even eliminated adhesive transfer, in comparison with prior art repositionable pressure-sensitive adhesives which are based on solid microspheres.Type: GrantFiled: February 22, 1991Date of Patent: October 1, 1991Assignee: Minnesota Mining and Manufacturing CompanyInventor: Joaquin Delgado
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Patent number: 5045569Abstract: Hollow, polymeric, acrylate, infusible, inherently tacky, solvent-insoluble, solvent-dispersible, elastomeric pressure-sensitive adhesive microspheres having an average diameter of at least about 1 micrometer. Preferred microspheres are those wherein a majority of the hollow microspheres contain at least one of interior void having a diamter of at least 10% of the diameter of the microsphere.These hollow microspheres are useful as repositionable pressure-sensitive adhesives. The invention also provides pressure-sensitive adhesives consisting essentially of such hollow microspheres. Aqueous suspensions of these microspheres, processes for their preparation, spray repositionable pressure-sensitive adhesive compositions, and microsphere-coated sheet materials are also provided. Surprisingly, hollow microspheres of the invention show reduced or even eliminated adhesive transfer, in comparison with prior art repositionable pressure-sensitive adhesives which are based on solid microspheres.Type: GrantFiled: November 30, 1988Date of Patent: September 3, 1991Assignee: Minnesota Mining and Manufacturing CompanyInventor: Joaquin Delgado