Patents by Inventor Sara L. Megchelsen

Sara L. Megchelsen 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).

  • THIN BARRIER FILM FOR CONTAINMENT OF HALOGENATED AROMATIC COMPOUNDS IN A CHEMICAL THERMOMETER
    Publication number: 20020018512
    Abstract: A barrier for halogenated aromatic compounds is provided, especially fluorinated hydrocarbon films useful for containing precise quantities of halogenated aromatic compounds used as thermally sensitive materials in reversible chemical thermometers. A new shape of chemical thermometer is also disclosed.
    Type: Application
    Filed: July 1, 1998
    Publication date: February 14, 2002
    Applicant: 3M Innovative Properties Company
    Inventors: RODNEY K. HEHENBERGER, SARA L. MEGCHELSEN, RICHARD L. JACOBSON
  • Viral resistant seam for protective apparel, and method of manufacturing same
    Patent number: 5879493
    Abstract: A reinforced viral resistant seam for an article of protective apparel constructed by arranging first and second thermoplastic webs and at least one reinforcing strip thermally bondable with the webs along a common seam edge. An ultrasonic welding wheel having a cutting edge immediately adjacent to the welding surface is used to form a viral resistant, comfortable, high tensile strength seam suitable for articles of protective apparel.
    Type: Grant
    Filed: July 2, 1997
    Date of Patent: March 9, 1999
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Mark V. Johnson, Nancy C. Rauschenberg, Sara L. Megchelsen
  • Thermally bonded viral barrier composite
    Patent number: 5865919
    Abstract: A viral barrier composite of a thermoplastic film thermally bonded on at least one side thereof to a breathable thermoplastic web, and method for making the same. The viral barrier composite has viral barrier properties, a moisture vapor transmission rate of at least 700 g/m.sup.2 /24 hours and a bond strength between the thermoplastic film and breathable thermoplastic web of at least 0.07N/cm. The viral barrier composite is formed by calendering an assembly comprising a thermoplastic film and a breathable thermoplastic web between a smooth roll and a pattern roll. The viral barrier composite may be used for constructing articles of protective apparel.
    Type: Grant
    Filed: January 29, 1997
    Date of Patent: February 2, 1999
    Assignee: Minnesota Mining and Manufacturing Co.
    Inventors: Sara L. Megchelsen, Nancy C. Rauschenberg, Mark V. Johnson
  • Thermally bonded viral barrier composite
    Patent number: 5786058
    Abstract: A viral barrier composite of a thermoplastic film thermally bonded on at least one side thereof to a breathable thermoplastic web, and method for making the same. The viral barrier composite has viral barrier properties, a moisture vapor transmission rate of at least 700 g/m.sup.2 /24 hours and a bond strength between the thermoplastic film and breathable thermoplastic web of at least 0.07N/cm. The viral barrier composite is formed by calendering an assembly comprising a thermoplastic film and a breathable thermoplastic web between a smooth roll and a pattern roll. The viral barrier composite may be used for constructing articles of protective apparel.
    Type: Grant
    Filed: December 13, 1995
    Date of Patent: July 28, 1998
    Inventors: Sara L. Megchelsen, Nancy C. Rauschenberg, Mark V. Johnson
  • Viral resistant seam for protective apparel, and method of manufacturing same
    Patent number: 5682618
    Abstract: A reinforced viral resistant seam for an article of protective apparel constructed by arranging first and second thermoplastic webs and at least one reinforcing strip thermally bondable with the webs along a common seam edge. An ultrasonic welding wheel having a cutting edge immediately adjacent to the welding surface is used to form a vital resistant, comfortable, high tensile strength seam suitable for articles of protective apparel.
    Type: Grant
    Filed: April 3, 1995
    Date of Patent: November 4, 1997
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Mark V. Johnson, Nancy C. Rauschenberg, Sara L. Megchelsen