Patents by Inventor Julie B. Stahl

Julie B. Stahl 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: 5709943
    Abstract: The present invention provides biological assay and adsorption supports comprising an inert substrate supporting a nanostructured surface comprising metal coated, oriented, discrete submicron-size whiskers. Optionally, conformally metal coated whiskers may be partially encapsulated or conformally coated with a second material. The nanostructured surface adsorbs biomolecules rapidly at high levels of tight binding without vortexing or agitation. Advantageously, the bound biomolecules retain their biological activity.
    Type: Grant
    Filed: May 4, 1995
    Date of Patent: January 20, 1998
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Patrick L. Coleman, Mark K. Debe, Julie B. Stahl
  • Patent number: 5486358
    Abstract: 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: Grant
    Filed: April 3, 1995
    Date of Patent: January 23, 1996
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Patrick L. Coleman, Steven M. Heilmann, Steven L. Kangas, Jerald K. Rasmussen, Richard J. Rolando, Julie B. Stahl
  • Patent number: 5451453
    Abstract: Supports having azlactone-functional surfaces, adduct supports prepared from such azlactone-functional supports, and methods of preparing both are disclosed. Azlactone functionality is introduced to surfaces of a pre-existing support in a manner which retains useful physical and chemical characteristics of the pre-existing support. One method involves exposing surfaces with high energy radiation to generate free radical reaction sites on the surfaces and causing azlactone-functional moieties to react with the free radical reaction sites. Another method involves coating surfaces with azlactone monomers, crosslinking monomers, and optionally co-monomers and polymerizing the monomers to form a polymerized coating of azlactone-functionality on the surfaces. Another method involves dispersion polymerization of azlactone-functional moieties to produce azlactone-functional particles within pores and interstices of a pre-existing support.
    Type: Grant
    Filed: June 20, 1994
    Date of Patent: September 19, 1995
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: David R. Gagnon, Patrick L. Coleman, Gary J. Drtina, Oh-Seung Kwon, Christopher S. Lyons, Dean S. Milbrath, Jerald K. Rasmussen, Julie B. Stahl
  • Patent number: 5408002
    Abstract: 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: Grant
    Filed: September 9, 1993
    Date of Patent: April 18, 1995
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Patrick L. Coleman, Steven M. Heilmann, Steven L. Kangas, Robert H. Menzies, Jerald K. Rasmussen, Richard J. Rolando, Jennifer J. Sahlin, Julie B. Stahl
  • Patent number: 5344701
    Abstract: Supports having azlactone-functional surfaces, adduct supports prepared from such azlactone-functional supports, and methods of preparing both are disclosed. Azlactone functionality is introduced to surfaces of a pre-existing support in a manner which retains useful physical and chemical characteristics of the pre-existing support. One method involves exposing surfaces with high energy radiation to generate free radical reaction sites on the surfaces and causing azlactone-functional moieties to react with the free radical reaction sites. Another method involves coating surfaces with azlactone monomers, crosslinking monomers, and optionally co-monomers and polymerizing the monomers to form a polymerized coating of azlactone-functionality on the surfaces. Another method involves dispersion polymerization of azlactone-functional moieties to produce azlactone-functional particles within pores and interstices of a pre-existing support.
    Type: Grant
    Filed: June 9, 1992
    Date of Patent: September 6, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: David R. Gagnon, Patrick L. Coleman, Gary J. Ortina, Christopher S. Lyons, Dean S. Milbrath, Jerald K. Rasmussen, Julie B. Stahl
  • Patent number: 4806478
    Abstract: A stable formulation of a non-cellulosic fabric having D-amino acid oxidase coated and dried thereon is shown. The fabric may be woven, nonwoven, or knit and may be made from polyolefin, nylon, polyester, or polyurethane fabrics. Polyolefin fabrics may be pretreated with a surfactant. Also shown are formulations containing some or all of the reagents used to detect beta lactam antibiotics. Kits having webs coated with analytically effective amounts of D-amino acid oxidase, peroxidase, flavin adenine, dinucleotide, a peroxide sensitive dye and a D,D-carboxypeptidase substrate containing a carboxyterminal D-alanine are shown. D,D-carboxypeptidase R39 enzyme may be provided separately in either aqueous form or dried on a separate piece of fabric. Under appropriate conditions the D,D-carboxypeptidase may also be dried on the fabric.
    Type: Grant
    Filed: October 17, 1984
    Date of Patent: February 21, 1989
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Julie B. Stahl