Patents by Inventor Stephen Jude Rothenburger

Stephen Jude Rothenburger 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).

  • Antimicrobial coatings for medical devices
    Patent number: 6514517
    Abstract: The present invention is directed to compositions containing an acid precursor in amounts effective to inhibit microbial attachment and growth on a surface of a medical device having the composition applied thereto, to films of such compositions and to medical devices having the composition applied to a surface thereof.
    Type: Grant
    Filed: June 20, 2001
    Date of Patent: February 4, 2003
    Assignee: Ethicon, Inc.
    Inventors: Dennis D. Jamiolkowski, Stephen Jude Rothenburger, Daniel J. Spangler
  • ANTIMICROBIAL COATINGS FOR MEDICAL DEVICES
    Publication number: 20020197185
    Abstract: The present invention is directed to compositions containing an acid precursor in amounts effective to inhibit microbial attachment and growth on a surface of a medical device having the composition applied thereto, to films of such compositions and to medical devices having the composition applied to a surface thereof.
    Type: Application
    Filed: June 20, 2001
    Publication date: December 26, 2002
    Inventors: Dennis D. Jamiolkowski, Stephen Jude Rothenburger, Daniel J. Spangler
  • Stabilization of isothiazolone
    Patent number: 6121302
    Abstract: The present invention provides a highly stable formulation having broad spectrum preservative properties. The formulation is an admixture of dialkanol-substituted dimethyhydantoin, one or more isothiazolone compounds, a hydantoin stabilizer, and a hydroxyl solvent. The formulation is highly stable in pH ranges of about 4 to 8. Preferably the active components are dimethyloldimethylhydantoin, chloromethylisothiazolone and methylisothiazolone, and the stabilizer dimethylhydantoin. The formulation has a free formaldehyde content of less than 0.2% and is beneficial for preserving various aqueous compositions, including household and industrial products, and especially personal care products, which require a less acidic pH range than in which isothiazolone is stable in the presence of cationic salts.
    Type: Grant
    Filed: May 11, 1999
    Date of Patent: September 19, 2000
    Assignee: Lonza, Inc.
    Inventors: Stephen Jude Rothenburger, Valerie Lynn Higbee, Patrick Jay Lutz