Patents by Inventor David Ralph Tristram

David Ralph Tristram 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).

  • Lysimachia plant named 'Walgoldalex'
    Publication number: 20020152526
    Abstract: A new cultivar of Lysimachia punctata named ‘Walgoldalex’ that is characterized by it's variegated foliage with green centers and gold margins and leaves that exhibit less distortion than ‘Alexander’.
    Type: Application
    Filed: April 14, 2001
    Publication date: October 17, 2002
    Inventors: Albert Timothy Alan Crowther, David Ralph Tristram
  • LAVANDULA PLANT NAMED 'WALVERA'
    Publication number: 20020133856
    Abstract: A new cultivar of Lavendula angustifolia plant named ‘Walvera’ that is characterized by broad variegated foliage with gray-green centers and cream-white margins, a mounded, semi-open habit, and compact violet-blue flower spikes. In combination, these traits set it apart from all other existing varieties of Lavendula known to the inventors.
    Type: Application
    Filed: March 13, 2001
    Publication date: September 19, 2002
    Inventors: Albert Timothy Alan Crowther, David Ralph Tristram
  • Lavandula plant named ‘Walvera’
    Patent number: PP13091
    Abstract: A new cultivar of Lavandula angustifolia plant named ‘Walvera’ that is characterized by variegated foliage with gray-green centers and cream-white margins, a mounded, semi-open habit, and compact violet-blue flower spikes. In combination, these traits set it apart from all other existing varieties of Lavandula.
    Type: Grant
    Filed: March 13, 2001
    Date of Patent: October 15, 2002
    Inventors: Albert Timothy Alan Crowther, David Ralph Tristram
  • Erysimum plant named ‘Walfrasun’
    Patent number: PP13432
    Abstract: A new cultivar of Erysimum named ‘Walfrasun’ that is characterized by a large compact, bushy habit, silver-green leaves, chocolate-purple buds and deep-yellow flowers that are strongly sweet in fragrance. In combination these traits set ‘Walfrasun’ apart from all other existing varieties of Erysimum known to the inventor.
    Type: Grant
    Filed: December 10, 2001
    Date of Patent: December 31, 2002
    Inventor: David Ralph Tristram
  • Scabiosa plant named ‘Walminipink’
    Patent number: PP13442
    Abstract: A new cultivar of Scabiosa columbaria named ‘Walminipink’ that is characterized by its small plant size, compact plant habit, proportionately sized pink flowers, prolific and continuous flowering, and sterility.
    Type: Grant
    Filed: September 25, 2001
    Date of Patent: December 31, 2002
    Inventor: David Ralph Tristram
  • Scabiosa plant named ‘Walminiblue’
    Patent number: PP13446
    Abstract: A new cultivar of Scabiosa columbaria named ‘Walminiblue’ that is characterized by its small plant size, compact plant habit, proportionately sized, intensely colored lavender blue flowers, prolific and continuous flowering, and sterility.
    Type: Grant
    Filed: September 25, 2001
    Date of Patent: December 31, 2002
    Inventor: David Ralph Tristram
  • Lysimachia plant named ‘Walgoldalex’
    Patent number: PP13547
    Abstract: A new cultivar of Lysimachia punctata named ‘Walgoldalex’ that is characterized by it's variegated foliage with green centers and gold margins and leaves that exhibit less distortion than ‘Alexander’.
    Type: Grant
    Filed: April 14, 2001
    Date of Patent: February 4, 2003
    Inventors: Albert Timothy Alan Crowther, David Ralph Tristram
  • plant named ‘WALWEIGEYE’
    Patent number: PP20842
    Abstract: A new and distinct cultivar of Weigela named ‘WALWEIGEYE’ a deciduous shrub characterized by upright habit, intense dark-red flower color, and foliage with intense golden-yellow margins and mid-green centers. In combination these traits set ‘WALWEIGEYE’ apart from all other existing varieties of Weigela known to the inventor.
    Type: Grant
    Filed: December 16, 2008
    Date of Patent: March 16, 2010
    Inventor: David Ralph Tristram
  • plant named ‘WALDIGONE’
    Patent number: PP20937
    Abstract: A new cultivar of DIGITALIS plant named “WALDIGONE” that is characterized by short, upright, multi-stemmed habit, dense and bushy plant form and flowers which are colored yellow with tinges of orange and red and whose lower lip petal projects approximately 6 mm beyond the other petals. In combination these traits set ‘WALDIGONE’ apart from all other existing varieties of DIGITALIS known to the inventor.
    Type: Grant
    Filed: January 23, 2009
    Date of Patent: April 20, 2010
    Inventor: David Ralph Tristram
  • Coreopsis plant named `Walcoreop`
    Patent number: PP10299
    Abstract: A distinct cultivar of Coreopsis plant named `Walcoreop`, characterized by its uniform, spreading and compact growth habit; moderate to rapid growth rate; moderate to high vigor; large inflorescences that are saucer-shaped; numerous inflorescences that flower continuously throughout the flowering season; bright yellow ray and disc florets; long, narrow ray florets; long, narrow bracts; and good garden performance.
    Type: Grant
    Filed: December 5, 1996
    Date of Patent: March 24, 1998
    Inventor: David Ralph Tristram