Patents by Inventor Peter Hemstad

Peter Hemstad 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).

  • Grape plant named 'Marquette'
    Publication number: 20070089208
    Abstract: The invention is a new and distinct variety of grape plant designated ‘Marquette’, which produces bluish-black colored fruit suitable for red wine production, and has a combination of high wine quality, excellent cold hardiness and good disease resistance.
    Type: Application
    Filed: October 13, 2006
    Publication date: April 19, 2007
    Inventors: Peter Hemstad, James Luby
  • Grape plant named 'Frontenac gris'
    Publication number: 20040237158
    Abstract: The invention is a new and distinct variety of grape plant designated ‘Frontenac gris’, which produces gray colored fruit suitable for white wine production, and has a combination of high wine quality, excellent cold hardiness and disease resistance, and very good productivity.
    Type: Application
    Filed: February 10, 2004
    Publication date: November 25, 2004
    Inventors: James Luby, Peter Hemstad
  • Grape plant named 'MN 1166'
    Publication number: 20030009798
    Abstract: The invention is a new and distinct variety of grapevine designated ‘MN 1166’, which has a combination of outstanding wine quality and cold hardiness.
    Type: Application
    Filed: April 9, 2001
    Publication date: January 9, 2003
    Inventors: James Luby, Peter Hemstad
  • Grape plant named ‘Frontenac gris’
    Patent number: PP16478
    Abstract: The invention is a new and distinct variety of grape plant designated ‘Frontenac gris’, which produces gray colored fruit suitable for white wine production, and has a combination of high wine quality, excellent cold hardiness and disease resistance, and very good productivity.
    Type: Grant
    Filed: February 10, 2004
    Date of Patent: April 25, 2006
    Assignee: Regents of the University of Minnesota
    Inventors: James Luby, Peter Hemstad
  • Grape plant named ‘La Crescent’
    Patent number: PP14617
    Abstract: The invention is a new and distinct variety of grapevine designated ‘La Crescent’, which has a combination of outstanding wine quality and cold hardiness.
    Type: Grant
    Filed: April 9, 2001
    Date of Patent: March 23, 2004
    Assignee: Regents of the University of Minnesota
    Inventors: James Luby, Peter Hemstad
  • Grapevine plant named ‘Marquette’
    Patent number: PP19579
    Abstract: The invention is a new and distinct variety of grape vine plant designated ‘Marquette’, which produces bluish-black colored fruit suitable for red wine production, and has a combination of high wine quality, excellent cold hardiness and good disease resistance.
    Type: Grant
    Filed: October 13, 2006
    Date of Patent: December 16, 2008
    Assignee: Regents of the University of Minnesota
    Inventors: Peter Hemstad, James Luby
  • Grapevine plant named ‘Itasca’
    Patent number: PP29847
    Abstract: The invention is a new and distinct variety of grapevine plant named ‘Itasca’, which is characterized by its adaptibility to grow in cold climates for grape production, its cold hardiness to at least U.S.D.A. Zone 4, its fruits that are suitable for making white wine, its fruit with moderately low total acidity levels combined with high sugar levels at maturity, and its high resistance to downy mildew and black rot diseases and moderate resistance to powdery mildew and foliar infestation by the insect pest phylloxera.
    Type: Grant
    Filed: January 9, 2017
    Date of Patent: November 20, 2018
    Assignee: REGENTS OF THE UNIVERSITY OF MINNESOTA
    Inventors: Peter Hemstad, Nicholas Smith, Kathryn Cook, John Thull, James Luby
  • Grapevine plant named ‘Clarion’
    Patent number: PP34794
    Abstract: The invention is a new and distinct variety of grapevine plant named ‘Clarion’ that is characterized by its grapes with a moderate juice total acidity (average of 7.73 g/L) making it suitable for wine production, its grapes that lack less desirable aromatic compounds that are typical of cold climate hybrid grapes, its grapes with floral notes including lilac and tropical fruit notes, its good growth habit without excessive vigor, and its grapes with a loose cluster architecture.
    Type: Grant
    Filed: February 2, 2022
    Date of Patent: December 6, 2022
    Assignee: REGENTS OF THE UNIVERSITY OF MINNESOTA
    Inventors: Matthew D. Clark, James Luby, Peter Hemstad