Patents by Inventor Timothy J. Griffin

Timothy J. Griffin 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).

  • Ultraviolet C light guides
    Patent number: 11940651
    Abstract: A light guide comprising a polymeric layer at least 25 percent transmissive over at least a 30 nm bandwidth in a wavelength range from 180 to 280 nm over a distance of at least 100 micrometers and visible light transparent reflecting layers (UV-C mirror) that are at least 50 percent reflective over at least 30 nm bandwidth in a wavelength range from 180 to 280 nm over an incident light angle of 0 to 90 degrees and that are at least 25 percent transmissive of visible light over at least 30 nm bandwidth in a wavelength range of 400 to 800 nm over an incident light angle of 0 to 90 degrees. The light guide is useful, for example, for antimicrobial surfaces.
    Type: Grant
    Filed: December 23, 2019
    Date of Patent: March 26, 2024
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Timothy J. Hebrink, Stephen P. Maki, Michael E. Griffin, Anna C. Hamlin, Justin M. Mazzoni, Christopher A. Merton, Matthew T. Scholz
  • Non-parametric methods for mass spectromic relative quantification and analyte differential abundance detection
    Patent number: 10032613
    Abstract: A method of normalizing data can comprise globally normalizing at least a first and second data distribution by normalizing the proximal compositional proportionality of the abundance of the analyte using proximity-based intensity normalization. In an example, the proximity-based intensity normalization comprising using the following formula: i jx ? j = 1 n x ? ? i jx / i jy ? j = 1 n y ? ? i jy wherein: ijx is the intensity of ion j in the first distribution x, ijy is the intensity of ion j in the second distribution y, nx is the number of surrogate ions in distribution x, and ny is the number of surrogate ions in distribution y.
    Type: Grant
    Filed: November 26, 2013
    Date of Patent: July 24, 2018
    Assignee: Regents of the University of Minnesota
    Inventors: Susan Van Riper, John V. Carlis, Timothy J. Griffin, Ebbing de Jong, LeeAnn Higgins
  • NON-PARAMETRIC METHODS FOR MASS SPECTROMIC RELATIVE QUANTIFICATION AND ANALYTE DIFFERENTIAL ABUNDANCE DETECTION
    Publication number: 20140200821
    Abstract: A method of normalizing data can comprise globally normalizing at least a first and second data distribution by normalizing the proximal compositional proportionality of the abundance of the analyte using proximity-based intensity normalization. In an example, the proximity-based intensity normalization comprising using the following formula: i jx ? j = 1 n x ? ? i jx / i jy ? j = 1 n y ? ? i jy wherein: ijx is the intensity of ion j in the first distribution x, ijy is the intensity of ion j in the second distribution y, nx is the number of surrogate ions in distribution x, and ny is the number of surrogate ions in distribution y.
    Type: Application
    Filed: November 26, 2013
    Publication date: July 17, 2014
    Applicant: Regents of the University of Minnesota
    Inventors: Susan Van Riper, John V. Carlis, Timothy J. Griffin, Ebbing de Jong, LeeAnn Higgins