Patents by Inventor Larry H. McAmish

Larry H. McAmish 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: 9447531
    Abstract: Described herein are spunlaid fibers including at least one polymeric resin and at least one filler having an average particle size of less than or equal to about 5 microns and/or having a top cut of less than about 15 microns. The at least one filler may be present in an amount of less than about 40% by weight, relative to the total weight of the spunlaid fibers. Also described herein is a method for producing spunlaid fibers including adding calcium carbonate to at least one polymeric resin and extruding the resulting mixture. Further described herein are nonwoven fabrics including such spunlaid fibers, and methods for producing them.
    Type: Grant
    Filed: August 14, 2013
    Date of Patent: September 20, 2016
    Assignee: Imerys Pigments, Inc.
    Inventors: Larry H. McAmish, David A. Skelhorn
  • Publication number: 20160023432
    Abstract: Composite structure comprising at least two nonwoven, polymeric layers bonded to each other, articles and products comprising or formed from said composite structure, and a process for making said composite structure
    Type: Application
    Filed: March 12, 2014
    Publication date: January 28, 2016
    Inventors: CRAIG DEPORTER, LARRY H. MCAMISH, DAVID JAMES WHITEMAN, OCTAVIOUS OTHELLO OJU DAVIES
  • Publication number: 20140070443
    Abstract: Described herein are spunlaid fibers including at least one polymeric resin and at least one filler having an average particle size of less than or equal to about 5 microns and/or having a top cut of less than about 15 microns. The at least one filler may be present in an amount of less than about 40% by weight, relative to the total weight of the spunlaid fibers. Also described herein is a method for producing spunlaid fibers including adding calcium carbonate to at least one polymeric resin and extruding the resulting mixture. Further described herein are nonwoven fabrics including such spunlaid fibers, and methods for producing them.
    Type: Application
    Filed: August 14, 2013
    Publication date: March 13, 2014
    Applicant: Imerys Pigments, Inc.
    Inventors: Larry H. McAmish, David A. Skelhorn
  • Publication number: 20120238175
    Abstract: Disclosed herein are spunlaid fibers comprising at least one polymeric resin and at least one filler having an average particle size of less than or equal to about 5 microns and/or having a top cut of less than about 15 microns, wherein the at least one filler is present in an amount of less than about 40% by weight, relative to the total weight of the spunlaid fibers. Also disclosed herein is a method for producing spunlaid fibers comprising adding calcium carbonate to at least one polymeric resin and extruding the resulting mixture. Further disclosed herein are nonwoven fabrics comprising such spunlaid fibers and methods for producing them.
    Type: Application
    Filed: April 30, 2012
    Publication date: September 20, 2012
    Inventors: Larry H. McAmish, David A. Skelhorn
  • Publication number: 20100184348
    Abstract: Disclosed herein, in one embodiment, are spunlaid fibers comprising at least one polymeric resin and at least one filler having an average particle size of less than or equal to about 5 microns and/or having a top cut of less than about 15 microns, wherein the at least one filler is present in an amount of less than about 40% by weight, relative to the total weight of the spunlaid fibers. Also disclosed herein is a method for producing spunlaid fibers comprising adding calcium carbonate to at least one polymeric resin and extruding the resulting mixture. Further disclosed herein are nonwoven fabrics comprising such spunlaid fibers and methods for producing them.
    Type: Application
    Filed: February 14, 2008
    Publication date: July 22, 2010
    Applicant: IMERYS PIGMENTS, INC.
    Inventors: Larry H. McAmish, David A. Skelhorn
  • Publication number: 20040157333
    Abstract: Methods of analyzing pore structure in a microporous polyolefin film comprise applying a detectable material to one surface of a microporous polyolefin film, wherein the detectable material is capable of traveling through pores in the film, and focusing a confocal microscope at a depth within the film to obtain a first image of the detectable material within pores of the film at the depth within the film. Three-dimensional images of pore structure within a microporous polyolefin film comprise a plurality of aligned confocal microscope images wherein each confocal microscope image comprises a two-dimensional image of pore structure at a depth within the film.
    Type: Application
    Filed: November 5, 2003
    Publication date: August 12, 2004
    Inventors: Larry H. McAmish, David L Green
  • Patent number: 6770234
    Abstract: The present invention is directed to the method of extruding a thermoplastic co-polyester EMA (ethyl methyl acrylate) blended film at temperatures well above the melt temperature of the base thermoplastic co-polyester, the co-polyester/EMA film having enhanced barrier properties. Notably, the present invention contemplates extrusion of co-polyester compounds onto suitable substrates without the need to employ antioxidant compounds in the molten polymer material. A further aspect of the present invention entails a film comprising an EMA and co-polyester thermoplastic admixed with a compatibilizer and extruded at a temperature at least 10% higher than the melt temperature, which in turn provides the co-polyester film with durable adhesive properties in addition to good breathability as measured by moisture vapor transmission rate (MVTR).
    Type: Grant
    Filed: November 29, 2001
    Date of Patent: August 3, 2004
    Assignee: Polymer Group, Inc.
    Inventors: Kevin Paul Osborn, Larry H. McAmish
  • Publication number: 20020120046
    Abstract: The present invention is directed to the method of extruding a thermoplastic co-polyester EMA (ethyl methyl acrylate) blended film at temperatures well above the melt temperature of the base thermoplastic co-polyester, the co-polyester/EMA film having enhanced barrier properties. Notably, the present invention contemplates extrusion of co-polyester compounds onto suitable substrates without the need to employ antioxidant compounds in the molten polymer material.
    Type: Application
    Filed: November 29, 2001
    Publication date: August 29, 2002
    Inventors: Kevin Paul Osborn, Larry H. McAmish
  • Patent number: 5910225
    Abstract: A nonwoven porous fabric is laminated to a thermoplastic film, with the film being capable of rendered microporous upon permanent elongation. The film and fabric laminate is then heated and elongated, causing the fabric and film to become thinner and to cause the film layer to become microporous.
    Type: Grant
    Filed: October 16, 1997
    Date of Patent: June 8, 1999
    Assignee: Chicopee, Inc.
    Inventors: Larry H. McAmish, Richard L. Ferencz, Gregg T. Wilkinson
  • Patent number: 4908163
    Abstract: A nonreinforced microfiber fabric is disclosed. The fabric has minimum grab tensile strength to weight ratio greater than 0.8 N per gram per square meter and a minimum Elmendorf tear strength to weight ratio greater than 0.04 N per gram per square meter. The fibers in the fabric have an average length greater than 10 centimeters and at least 80% of the fibers have a diameter of 7 microns or less. The fabric is made by thermally embossing a microfiber web which is made with a minimum of degradation to the polymer and employing high velocity secondary air to maintain air flow uniformity and fiber length.
    Type: Grant
    Filed: July 11, 1986
    Date of Patent: March 13, 1990
    Assignee: Surgikos, Inc.
    Inventors: Larry H. McAmish, Tralance O. Addy, George F. Lee
  • Patent number: 4774125
    Abstract: A melt-blown microfiber fabric having improved surface abrasion resistance is disclosed, having a surface veneer of melt-blown fibers with an average fiber diameter of greater than 8 microns and in which 75% of the fibers have a fiber diameter of at least 7 microns and a wet and dry abrasion resistance of greater than 15 cycles to pill.
    Type: Grant
    Filed: June 22, 1987
    Date of Patent: September 27, 1988
    Assignee: Surgikos, Inc.
    Inventor: Larry H. McAmish
  • Patent number: 4622259
    Abstract: A nonreinforced microfiber fabric is disclosed. The fabric has minimum grab tensile strength to weight ratio greater than 0.8N per gram per square meter and a minimum Elmendorf tear strength to weight ratio greater than 0.04N per gram per square meter. The fibers in the fabric have an average length greater than 10 centimeters and at least 80% of the fibers have a diameter of 7 microns or less. The fabric is made by thermally embossing a microfiber web which is made with a minimum of degradation to the polymer and employing high velocity secondary air to maintain air flow uniformity and fiber length.
    Type: Grant
    Filed: August 8, 1985
    Date of Patent: November 11, 1986
    Assignee: Surgikos, Inc.
    Inventors: Larry H. McAmish, Tralance O. Addy, George F. Lee
  • Patent number: 4077914
    Abstract: A process for imparting a positive electrical charge to a gaseous stream comprises contacting the stream with an aqueous solution comprising about 500-3000 ppm of a composition consisting essentially of borax and a surfactant. In the composition, borax and the surfactant are present in a weight ratio of borax to surfactant of about 1.2:1 to about 15:1. The process and composition are useful in the control of static electricity.
    Type: Grant
    Filed: April 2, 1975
    Date of Patent: March 7, 1978
    Assignee: Lester Laboratories, Inc.
    Inventors: John P. Peters, Larry H. McAmish