Patents by Inventor Richard J. Rolando
Richard J. Rolando 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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Patent number: 5983604Abstract: Multilayered barrier structures containing a gas barrier layer of a non-chlorine containing organic polymer which is substantially impermeable to oxygen gas and a moisture barrier layer of a mesophase propylene-based material are provided. These structures are environmentally compatible and radiation resistant, and exhibit one or more additional properties, including gas barrier properties, moisture barrier properties, toughness, heat sealability, softness, and quietness during wrinkling. Also provided are methods of preparing and using such multilayered barrier structures, and articles, such as films, pouches, and tubings, formed from these structures.Type: GrantFiled: February 5, 1998Date of Patent: November 16, 1999Assignee: 3M Innovative Properties CompanyInventors: Debra L. Wilfong, Richard J. Rolando
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Patent number: 5730919Abstract: Multilayered barrier structures containing a gas barrier layer of a non-chlorine containing organic polymer which is substantially impermeable to oxygen gas and a moisture barrier layer of a mesophase propylene-based material are provided. These structures are environmentally compatible and radiation resistant, and exhibit one or more additional properties, including gas barrier properties, moisture barrier properties, toughness, heat sealability, softness, and quietness during wrinkling. Also provided are methods of preparing and using such multilayered barrier structures, and articles, such as films, pouches, and tubings, formed from these structures.Type: GrantFiled: November 13, 1995Date of Patent: March 24, 1998Assignee: Minnesota Mining and Manufacturing CompanyInventors: Debra L. Wilfong, Richard J. Rolando
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Patent number: 5660922Abstract: A unified, composite tape structure is provided. The tape comprises two outer pressure-sensitive adhesive layers joined via melt processing. A method of making the tape comprising the use of melt processing is also disclosed. In the method a plurality of layers are melt processed and simultaneously joined to form the unified composite.Type: GrantFiled: May 3, 1995Date of Patent: August 26, 1997Assignee: Minnesota Mining and Manufacturing CompanyInventors: David B. Herridge, Dennis L. Krueger, Richard J. Rolando, Ronald J. Ramirez, James E. Sax
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Patent number: 5643375Abstract: Multilayered barrier structures comprising a gas barrier layer of a non-chlorine containing organic polymer which is substantially impermeable to oxygen gas and a moisture barrier layer of a mesophase propylene-based material are provided. These structures are environmentally compatible and radiation resistant, and exhibit one or more additional properties, including gas barrier properties, moisture barrier properties, toughness, heat sealability, softness, and quietness during wrinkling. Also provided are methods of preparing and using such multilayered barrier structures, and articles, such as films, pouches, and tubings, formed from these structures, as well as multilayer barrier structures with additional graft layers affixed thereto through the application of a dose of ionizing radiation.Type: GrantFiled: December 30, 1994Date of Patent: July 1, 1997Assignee: Minnesota Mining and Manufacturing CompanyInventors: Debra L. Wilfong, Richard J. Rolando
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Patent number: 5599602Abstract: A unified, composite tape structure comprising two outer pressure-sensitive adhesive layers and a backing joined via melt processing. At least one of the backing and two outer adhesive layers is not mutually coextensive. A method of making the tape comprising the use of melt processing is also disclosed.Type: GrantFiled: September 26, 1995Date of Patent: February 4, 1997Assignee: Minnesota Mining and Manufacturing CompanyInventors: William K. Leonard, Kirit C. Mody, Richard J. Rolando
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Patent number: 5589122Abstract: A method utilizing melt processing for making a unified, composite tape structure that includes two outer pressure-sensitive adhesive layers and a backing wherein at least one of the two outer adhesive layers is not mutually coextensive.Type: GrantFiled: March 29, 1995Date of Patent: December 31, 1996Assignee: Minnesota Mining And Manufacturing CompanyInventors: William K. Leonard, Kirit C. Mody, Richard J. Rolando
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Patent number: 5496295Abstract: Multilayered barrier structures comprising a gas barrier layer of a non-chlorine containing organic polymer which is substantially impermeable to oxygen gas and a moisture barrier layer of a mesophase propylene-based material are provided. These structures are environmentally compatible and radiation resistant, and exhibit one or more additional properties, including gas barrier properties, moisture barrier properties, toughness, heat sealability, softness, and quietness during wrinkling. Also provided are methods of preparing and using such multilayered barrier structures, and articles, such as films, pouches, and tubings, formed from these structures.Type: GrantFiled: December 6, 1993Date of Patent: March 5, 1996Assignee: Minnesota Mining and Manufacturing CompanyInventors: Debra L. Wilfong, Richard J. Rolando
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Patent number: 5486358Abstract: An azlactone-functional thermoplastic composition is disclosed, The composition is a blend of an azlactone-functional composition and a thermoplastic polymer. A method of making azlactone-functional homopolymers by bulk homopolymerization is disclosed, optionally also concurrent or sequential blending of a thermoplastic polymer. A method of blending azlactone-functional compositions and thermoplastic polymers is disclosed. Molded articles coupled with biologically active substances are claimed.Type: GrantFiled: April 3, 1995Date of Patent: January 23, 1996Assignee: Minnesota Mining and Manufacturing CompanyInventors: Patrick L. Coleman, Steven M. Heilmann, Steven L. Kangas, Jerald K. Rasmussen, Richard J. Rolando, Julie B. Stahl
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Patent number: 5470526Abstract: The invention provides a compostable thermoplastic polymer composition comprising a thermoplastic polymer, a transition metal salt selected from cobalt, manganese, copper, cerium, vanadium and iron, and a fatty acid or ester having 10 to 22 carbon atoms providing unsaturated species and free acid. The composition will oxidatively degrade to an embrittled state within at least 14 days at 60.degree. C. and a relative humidity of at least eighty percent. The invention also provides degradable multilayered polyolefin structures incorporating a transition metal in the form of a salt, degradable and compostable multilayered barrier films, degradable, radiation-resistant compositions and articles, and methods of forming and using such compositions, structures and articles.Type: GrantFiled: August 18, 1993Date of Patent: November 28, 1995Assignee: Minnesota Mining and Manufacturing CompanyInventors: Debra L. Wilfong, Denise R. Rutherford, Richard J. Rolando
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Patent number: 5466747Abstract: Graft copolymers comprising a poly-alpha-olefin base polymer selected from the group consisting of polyethylene, polypropylene, polystyrene, and compatible mixtures thereof, having grafted thereto an olefinic monomer. The grafted monomer is present in an amount effective to increase the amount of protein that will bind to the graft copolymer as compared with the base polymer. Also disclosed are polymer/protein compositions comprising a graft copolymer having a protein immobilized on the surface thereof, processes for the preparation of the above-described graft copolymers and compositions, methods of immobilizing proteins, and methods of immunoassay based on such immobilization.Type: GrantFiled: September 26, 1994Date of Patent: November 14, 1995Assignee: Minnesota Mining and Manufacturing CompanyInventors: Richard J. Rolando, Patrick L. Coleman, Steven L. Kangas, Thomas A. Kotnour
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Patent number: 5466749Abstract: Graft copolymers comprising a poly-alpha-olefin base polymer selected from the group consisting of polyethylene, polypropylene, polystyrene, and compatible mixtures thereof, having grafted thereto an olefinic monomer. The grafted monomer is present in an amount effective to increase the amount of protein that will bind to the graft copolymer as compared with the base polymer.Also disclosed are polymer/protein compositions comprising a graft copolymer having a protein immobilized on the surface thereof, processes for the preparation of the above-described graft copolymers and compositions, methods of immobilizing proteins, and methods of immunoassay based on such immobilization.Type: GrantFiled: September 14, 1994Date of Patent: November 14, 1995Assignee: Minnesota Mining and Manufacturing CompanyInventors: Richard J. Rolando, Patrick L. Coleman, Steven L. Kangas, Thomas A. Kotnour
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Patent number: 5408002Abstract: An azlactone-functional thermoplastic composition is disclosed. The composition is a blend of an azlactone-functional composition and a thermoplastic polymer. A method of making azlactone-functional homopolymers by bulk homopolymerization is disclosed, optionally also concurrent or sequential blending of a thermoplastic polymer. A method of blending azlactone-functional compositions and thermoplastic polymers is disclosed. Molded articles and adduct molded articles formed from the thermoplastic composition are disclosed.Type: GrantFiled: September 9, 1993Date of Patent: April 18, 1995Assignee: Minnesota Mining and Manufacturing CompanyInventors: Patrick L. Coleman, Steven M. Heilmann, Steven L. Kangas, Robert H. Menzies, Jerald K. Rasmussen, Richard J. Rolando, Jennifer J. Sahlin, Julie B. Stahl
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Patent number: 5407713Abstract: Multilayered barrier structures comprising a gas barrier layer of a non-chlorine containing organic polymer which is substantially impermeable to oxygen gas and a moisture barrier layer of a mesophase propylene-based material are provided. These structures are environmentally compatible and radiation resistant, and exhibit one or more additional properties, including gas barrier properties, moisture barrier properties, toughness, heat sealability, softness, and quietness during wrinkling. Also provided are methods of preparing and using such multilayered barrier structures, and articles, such as films, pouches, and tubings, formed from these structures, as well as multilayer barrier structures with additional graft layers affixed thereto through the application of a dose of ionizing radiation.Type: GrantFiled: October 20, 1993Date of Patent: April 18, 1995Assignee: Minnesota Mining and Manufacturing CompanyInventors: Debra L. Wilfong, Richard J. Rolando
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Patent number: 5364907Abstract: Graft copolymers comprising a poly-alpha-olefin base polymer selected from the group consisting of polyethylene, polypropylene, polystyrene, and compatible mixtures thereof, having grafted thereto an olefinic monomer. The grafted monomer is present in an amount effective to increase the amount of protein that will bind to the graft copolymer as compared with the base polymer.Also disclosed are polymer/protein compositions comprising a graft copolymer having a protein immobilized on the surface thereof, processes for the preparation of the above-described graft copolymers and compositions, methods of immobilizing proteins, and methods of immunoassay based on such immobilization.Type: GrantFiled: June 2, 1993Date of Patent: November 15, 1994Assignee: Minnesota Mining and Manufacturing CompanyInventors: Richard J. Rolando, Patrick L. Coleman, Steven L. Kangas, Thomas A. Kotnour
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Patent number: 5336717Abstract: A fluorochemical graft copolymer comprising: a base polymer comprising polymerized units derived from monomers having terminal olefinic double bonds, having a moiety comprising a fluoroaliphatic group grafted thereto. Also disclosed are processes for preparing such fluorochemical graft copolymers, forming and annealing methods for enhancing the surface activity of such a graft copolymer, polymer blends comprising such a fluorochemical graft copolymer and a matrix polymer that is miscible with the base polymer, and a method for reducing the surface energy of a polymer comprising polymerized units derived from monomers having terminal olefinic double bonds.Type: GrantFiled: January 26, 1994Date of Patent: August 9, 1994Assignee: Minnesota Mining and Manufacturing CompanyInventors: Richard J. Rolando, Thomas A. Kotnour, James E. Sax
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Patent number: 5326823Abstract: A fluorochemical graft copolymer comprising: a base polymer comprising polymerized units derived from monomers having terminal olefinic double bonds, having grafted thereto a plurality of polyfluoropolyether groups, Also disclosed is a process for preparing such a graft copolymer, and a method for reducing the surface energy of a polymer comprising polymerized units derived from monomers having terminal olefinic double bonds.Type: GrantFiled: June 23, 1993Date of Patent: July 5, 1994Assignee: Minnesota Mining and Manufacturing CompanyInventors: Richard J. Rolando, Anthony B. Clinch
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Patent number: 5314959Abstract: A fluorochemical graft copolymer comprising: a base polymer comprising polymerized units derived from monomers having terminal olefinic double bonds, having a moiety comprising a fluoroaliphatic group grafted thereto. Also disclosed are processes for preparing such fluorochemical graft copolymers, forming and annealing methods for enhancing the surface activity of such a graft copolymer, polymer blends comprising such a fluorochemical graft copolymer and a matrix polymer that is miscible with the base polymer, and a method for reducing the surface energy of a polymer comprising polymerized units derived from monomers having terminal olefinic double bonds.Type: GrantFiled: March 6, 1991Date of Patent: May 24, 1994Assignee: Minnesota Mining and Manufacturing CompanyInventors: Richard J. Rolando, James E. Sax
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Patent number: 5262484Abstract: Graft copolymers and processes for the preparation thereof are provided. The copolymers comprise a base polymer having grafted thereto a monomeric 2-alkenyl azlactone. The surface properties of the graft copolymers can be modified by binding thereto nucleophilic reagents comprising further functional groups with desired properties. Further, the amount of azlactone available at the surface of a graft copolymer for binding to such nucleophilic reagents can be controlled by selecting a surface against which the graft copolymer is formed. The graft copolymers exhibit desirable thermoplastic, melt flow, and adhesion properties and are particularly useful for immobilizing proteins. Methods of immunoassay based on the immobilization of proteins are also disclosed. Another utility of the graft copolymers involves the compatibilizing of immiscible polymer blends.Type: GrantFiled: September 9, 1992Date of Patent: November 16, 1993Assignee: Minnesota Mining and Manufacturing CompanyInventors: Patrick L. Coleman, Thomas A. Kotnour, Richard J. Rolando
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Patent number: 5258419Abstract: Polymer blends of non-crystalline mesomorphous polypropylene and a polymer compatible with such polypropylene and the method of making such polymer blends are provided. Such compatible polymer blends exhibit substantial maintenance of structural integrity after exposure to gamma irradiation and provide heat sealing properties, puncture resistance, and tear strength. Films, fibers, and other articles made from such blends may be used in various applications, including medical articles such as medical packaging films, ostomy pouches, and transdermal delivery patches, which may require sterilized storage prior to usage.Type: GrantFiled: June 26, 1992Date of Patent: November 2, 1993Assignee: Minnesota Mining and Manufacturing CompanyInventors: Richard J. Rolando, Dennis L. Krueger
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Patent number: 5254378Abstract: Irradiated polypropylene articles of non-crystalline mesomorphous polypropylene and a method for preparing the articles are provided. The articles are irradiated with a sterilizing dosage of ionizing radiation. The irradiated articles such as films and blown microfiber webs are substantially undegraded after storage periods of as long as six months.Type: GrantFiled: April 6, 1992Date of Patent: October 19, 1993Assignee: Minnesota Mining and Manufacturing CompanyInventors: Dennis L. Krueger, Thomas I. Insley, Daniel E. Meyer, Richard J. Rolando