Patents Examined by Irene Mark
  • Method for regeneration of coniferous plants by somatic embryogenesis
    Patent number: 5731203
    Abstract: This invention relates to a method for regeneration of coniferous plants. In particular, this invention relates to an improved method for developing viable stage 3 embryos from embryogenic cultures for somatic embryogenesis processes for plants of the genus Pinus and Pinus interspecies hybrids. This method is well suited for producing clonal planting stock useful for reforestation.
    Type: Grant
    Filed: June 14, 1996
    Date of Patent: March 24, 1998
    Assignee: Westvaco Corporation
    Inventor: Levis W. Handley, III
  • Method for regeneration of coniferous plants by somatic embryogenesis employing polyethylene glycol
    Patent number: 5731204
    Abstract: This invention relates to a method for regeneration of coniferous plants. In particular, this invention relates to an improved method for producing and developing somatic embroyos for somatic embryogenesis processes for plants of the genus Pinus and Pinus interspecies hybrids by including polyethylene glycol in the development media. This method is well suited for producing clonal planting stock useful for reforestation.
    Type: Grant
    Filed: December 20, 1996
    Date of Patent: March 24, 1998
    Assignee: Westvaco Corporation
    Inventors: Mark R. Rutter, Levis W. Handley, III, Michael R. Becwar
  • Method for the preparation of D-arginine and L-ornithine
    Patent number: 5591613
    Abstract: D-arginine and L-ornithine are prepared by means of the enzymatic conversion of DL-arginine in the presence of an L-arginase which selectively converts L-arginase to L-ornithine, permitting recovery of both D-arginine and L-ornithine.
    Type: Grant
    Filed: December 29, 1994
    Date of Patent: January 7, 1997
    Assignee: Degussa Aktiengesellschaft
    Inventors: Kyriakos Makryaleas, Karlheinz Drauz, Andreas Bommarius