Patents by Inventor Yitzhak Hadar

Yitzhak Hadar 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).

  • Patent number: 5998197
    Abstract: Ascospores of wood-penetrating, pitch-grading fungi of the class of Ascomycotina and Deuteromycotina, eg. Ophiostromas, may be screened to provide fungi combining the properties of good growth on non-sterile wood substrates and minimized or even enhanced brightness effects for use in pitch reduction of wood substrates, eg. logs and wood chips. A new and improved method of isolating such ascospores involving effective suspension in an oil consumable by the fungus, eg. a vegetable oil, and then treatment of the oil with a dispersing agent is also disclosed.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: December 7, 1999
    Assignee: Clariant Finance (BVI) Limited
    Inventors: Roberta L. Farrell, Yitzhak Hadar, Philip A. Wendler, Wendy Zimmerman
  • Patent number: 5853537
    Abstract: Wood-penetrating fungi of the classes Ascomycotina and Deuteromycotina may be used very effectively to degrade pitch in wood forms used in the making of cellulosic products. Such fungi include but are not limited to the blue stain fungi. The process of Ascospore selection may be used to provide fungi which exhibit good growth on wood substrate while having little or no effects on substrate brightness, or even a positive effect on brightness. The treatment positively influences strength properties of ultimate products such as paper. In one embodiment the pulpwood or pulp is treated with a pitch degrading fungus of the genus Ophiostoma.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: December 29, 1998
    Assignee: Clariant Finance (BVI) Limited
    Inventors: Robert A. Blanchette, Roberta L. Farrell, Yitzhak Hadar, Johnnie E. Merritt, II, Robert A. Snyder, Philip A. Wendler, Wendy Zimmerman
  • Patent number: 5609724
    Abstract: Ascospores of wood-penetrating, pitch-grading fungi of the class of Ascomycotina and Deuteromycotina, eg. Ophiostromas, may be screened to provide fungi combining the properties of good growth on non-sterile wood substrates and minimized or even enhanced brightness effects for use in pitch reduction of wood substrates, eg. logs and wood chips. A new and improved method of isolating such ascospores involving effective suspension in an oil consumable by the fungus, eg. a vegetable oil, and then treatment of the oil with a dispersing agent is also disclosed.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: March 11, 1997
    Assignee: Sandoz Ltd
    Inventors: Roberta L. Farrell, Yitzhak Hadar, Philip A. Wendler, Wendy Zimmerman
  • Patent number: 5476789
    Abstract: Ascospores of wood-penetrating, pitch-grading fungi of the class of Ascomycotina and Deuteromycotina, e.g. Ophiostromas, may be screened to provide fungi combining the properties of good growth on non-sterile wood substrates and minimized or even enhanced brightness effects for use in pitch reduction of wood substrates, e.g. logs and wood chips. A new and improved method of isolating such ascospores involving effective suspension in an oil consumable by the fungus, e.g. a vegetable oil, and then treatment of the oil with a dispersing agent is also disclosed.
    Type: Grant
    Filed: October 1, 1993
    Date of Patent: December 19, 1995
    Assignee: Sandoz Ltd.
    Inventors: Roberta L. Farrell, Yitzhak Hadar, Philip A. Wendler, Wendy Zimmerman