Patents by Inventor Keith N. Slessor

Keith N. Slessor 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).

  • Method and composition of chemicals for attracting and controlling the douglas-fir tussock moth
    Patent number: 5766616
    Abstract: This invention relates to novel methods and compositions for attracting and controlling the Douglas-fir tussock moth (DFTM). More specifically, this invention pertains to the use of novel pheromone combinations and methods to attract and control DFTM which is a major defoliator of Douglas-fir and other true firs. A composition for manipulating the behaviour of Douglas-fir tussock moths comprising: (a) Z6-heneicosen-11-one (Z6); and (b) one or more compounds from the group consisting of: (Z)6,(E)8-heneicosadien-11-one; (Z)6, (E) 9-heneicosadien-11-one; and (Z)6,(Z)9-heneicosadien-11-one.
    Type: Grant
    Filed: July 31, 1995
    Date of Patent: June 16, 1998
    Assignee: Simon Fraser University
    Inventors: Gerhard Gries, Keith N. Slessor, Regine Gries, Grigori Khaskin, Priyantha D. C. Wimalaratne, Gary Grant
  • Composition of chemicals for manipulating the behavior of nun moth, Lymantria monacha (L.), and gypsy moth, Lymantria dispar (L.)
    Patent number: 5683708
    Abstract: This invention relates to a composition and procedure for manipulating the behaviour of nun moth, Lymantria monacha (L.) and gypsy moth, Lymantria dispar (L.). More particularly, this invention relates to the preparation and use of chiral and racemic disparlure, chiral or racemic cis-7,8-epoxy-octadecane, 2-methyl-Z7-octadecene and Z7-octadene for manipulating the behaviour of nun moth and gypsy moth. A composition of chemicals for manipulating the behavior of nun moth and/or gypsy moth, said composition comprising two or more chemicals selected from the group consisting of: (a) 2-methyl-7R,8S-epoxy-octadecane (RS-disparlure); (b) 2-methyl-7S,8R-epoxy-octadecane (SR-disparlure); (c) 7R,8S-epoxy-octadecane; (d) 7S,8R-epoxy-octadecane; (e) 2-methyl-Z7-octadecene; and (f) Z7-octadecene.
    Type: Grant
    Filed: September 29, 1995
    Date of Patent: November 4, 1997
    Assignee: Simon Fraser University
    Inventors: Gerhard Gries, Gary Grant, Grigori Khaskin, Regine Gries, Keith N. Slessor, Jan Liska, Petr Kapitola
  • Novel pheromone composition for use in controlling honey bee colonies
    Patent number: 4990331
    Abstract: A novel combination of five queen-produced mandibular gland substances which can be used for controlling worker retinue formation around or in place of a honey bee queen Apis mellifera L. is disclosed. The composition comprises: 9-keto-2(E)-decenoic acid, R-(-)- and S-(+)-9-hydroxy-2(E)-decenoic acid, methyl p-hydroxybenzoate, and 4-hydroxy-3-methoxyphenylethanol. Each component more or less is generally weakly active alone, but the blend of five compounds in a ratio corresponding to their occurrence in gland extracts imparts activity equivalent to queen mandibular extract at a level as low as 10.sup.-7 of that present in a queen. This blend of compounds initiates the retinue response, which includes the licking and antennating behaviour that signals the presence of a dominant reproductive queen, and thereby establishes and stabilizes the social fabric of the colony.
    Type: Grant
    Filed: December 1, 1987
    Date of Patent: February 5, 1991
    Inventors: Keith N. Slessor, Lori-Ann Kaminski, Gaylord G. S. King, John H. Borden, Mark L. Winston