Patents by Inventor Debra L. Wilfong
Debra L. Wilfong 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: 5670006Abstract: Acrylate-only and epoxy-acrylate thermoset resins exhibit high temperature damping behavior. These materials are suitable for damping vibrations in structures and component parts of devices where high temperature performance is required, such as in automobiles, aircraft, industrial equipment and appliances.Type: GrantFiled: June 2, 1995Date of Patent: September 23, 1997Assignee: Minnesota Mining and Manufacturing CompanyInventors: Debra L. Wilfong, David J. Drath, Michael C. Palazzotto, Peggy S. Willett, Henry B. Clark, III
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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: 5562127Abstract: Multilayered tubing which exhibits one or more desirable characteristics of polyvinyl chloride (PVC) tubings, such as clarity, flexibility and toughness, but without the environmental and health hazards associated with PVC materials, is provided. Also provided is a method of preparing such tubing.Type: GrantFiled: July 18, 1995Date of Patent: October 8, 1996Assignee: Minnesota Mining and Manufacturing CompanyInventors: Dan L. Fanselow, Walton J. Hammar, John H. Ko, James C. Margl, Debra L. Wilfong
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Patent number: 5520568Abstract: A method of processing a lens is disclosed. A lens blank and a lens block are each provided with a structured surface having a plurality of tapered elements. The lens blank is releasably attached to the lens block by pressing the structured surface of the lens blank against the structured surface of the lens block, followed by subjecting the mounted lens blank to lens processing operations.Type: GrantFiled: July 15, 1994Date of Patent: May 28, 1996Assignee: Minnesota Mining and Manufacturing CompanyInventors: Lawrence W. Craighead, James A. Weldon, Forrest J. Rouser, Debra L. Wilfong
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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: 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: 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: 5262232Abstract: Acrylate-only and epoxy-acrylate thermoset resins exhibit high temperature damping behavior. These materials are suitable for damping vibrations in structures and component parts of devices where high temperature performance is required, such as in automobiles, aircraft, industrial equipment and appliances.Type: GrantFiled: January 22, 1992Date of Patent: November 16, 1993Assignee: Minnesota Mining and Manufacturing CompanyInventors: Debra L. Wilfong, David J. Drath, Michael C. Palazzotto, Peggy S. Willett, Henry B. Clark, III
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Patent number: 5067886Abstract: A reaction injection molding machine provides for independent spring actuation of pistons in metering cylinders. Individual compression of the springs is provided by hand screw compression mechanisms. The pressure level of the liquid in each metering cylinder is adjusted to a desired level of pressurization by the total energy transferred to the spring. Impingement mixing of liquid streams from each metering cylinder is synchronized by a valving rod which includes a plurality of mixing heads. Upon appropriate positioning, a mixing head opens an orifice from each metering cylinder to allow streams of liquid to be expelled into impinging contact. The resultant product is directed by the mixing head into a separate collection vessel associated with that mixing head where the product may react and solidify.Type: GrantFiled: February 1, 1991Date of Patent: November 26, 1991Assignee: Minnesota Mining and Manufacturing CompanyInventors: Timothy A. Salaba, Debra L. Wilfong
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Patent number: 5004351Abstract: A reaction injection molding machine provides for independent spring actuation of pistons in metering cylinders. Individual compression of the springs is provided by hand screw compression mechanisms. The pressure level of the liquid in each metering cylinder is adjusted to a desired level of pressurization by the total energy transferred to the springs. Impingement mixing of liquid streams from each metering cylinder is synchronized by a valving rod which includes a plurality of mixing heads. Upon appropriate positioning, a mixing head opens an orifice from each metering cylinder to allow streams of liquid to be expelled into impinging contact. The resultant product is directed by the mixing head into a separate collection vessel associated with that mixing head where the product may react and solidify.Type: GrantFiled: April 18, 1988Date of Patent: April 2, 1991Assignee: Minnesota Mining & Manufacturing CompanyInventors: Timothy A. Salaba, Debra L. Wilfong