Patents Assigned to P. C. M. Olsthoorn Holding BV
  • Spathiphyllum plant named ‘Sweet Roberta’
    Patent number: PP18372
    Abstract: A new cultivar of Spathiphyllum plant named ‘Sweet Roberta’ that is characterized by white spathes, green leaves and a large overall size.
    Type: Grant
    Filed: May 30, 2006
    Date of Patent: December 25, 2007
    Assignee: P. C. M. Olsthoorn Holding BV
    Inventor: Petrus C. M. Olsthoorn
  • Spathiphyllum plant named ‘Sweet Silvio’
    Patent number: PP18380
    Abstract: A new cultivar of Spathiphyllum plant named ‘Sweet Silvio’ that is characterized by a good response to flower initiation treatment, consistent flower production, green leaves and white spathes.
    Type: Grant
    Filed: May 30, 2006
    Date of Patent: January 1, 2008
    Assignee: P.C.M. Olsthoorn Holding BV
    Inventor: Petrus C. M. Olsthoorn
  • Spathiphyllum plant named ‘98216-59’
    Patent number: PP18570
    Abstract: A new cultivar of Spathiphyllum plant named ‘98216-59’ that is characterized by vertical white spathes, dark green leaves and a medium spathe size.
    Type: Grant
    Filed: October 13, 2006
    Date of Patent: March 11, 2008
    Assignee: P.C.M. Olsthoorn Holding BV
    Inventor: Petrus C. M. Olsthoorn
  • Spathiphyllum plant named ‘98286-29’
    Patent number: PP18571
    Abstract: A new cultivar of Spathiphyllum plant named ‘98286-29’ that is characterized by small white spathes and dark green leaves.
    Type: Grant
    Filed: October 13, 2006
    Date of Patent: March 11, 2008
    Assignee: P.C.M. Olsthoorn Holding BV
    Inventor: Petrus C. M. Olsthoorn
  • Spathiphyllum plant named ‘96411-10’
    Patent number: PP18672
    Abstract: A new cultivar of Spathiphyllum plant named ‘96411-10’ that is characterized by white spathes, green leaves, early branching and a good response to plant growth regulators.
    Type: Grant
    Filed: October 13, 2006
    Date of Patent: April 1, 2008
    Assignee: P.C.M. Olsthoorn Holding BV
    Inventor: Petrus C. M. Olsthoorn
  • Spathiphyllum plant named ‘Sweet Silvana’
    Patent number: PP18846
    Abstract: A new cultivar of Spathiphyllum plant named ‘Sweet Silvana’ that is characterized by white to cream colored spathes, dark green leaves and a fast growth rate.
    Type: Grant
    Filed: May 30, 2006
    Date of Patent: May 27, 2008
    Assignee: P.C.M. Olsthoorn Holding BV
    Inventor: Petrus C. M. Olsthoorn