Patents by Inventor Edward W. Underhill

Edward W. Underhill 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: 4610876
    Abstract: Two new compounds which are attractive to male fall cankerworm moths, Alsophila pometaria, in the field, are described. They are (Z,Z,Z,E)-3,6,9,11-nonadecatetraene and (Z,Z,Z,Z)-3,6,9,11-nonadecatetraene. These compounds, separately and together, and these two compounds together with a third, [(Z,Z,Z)3,6,9-nonadecatriene], act as attractants to male fall cankerworm moths and can be used to monitor, confuse or attempt to control, populations of the moths.
    Type: Grant
    Filed: December 5, 1985
    Date of Patent: September 9, 1986
    Assignee: Canadian Patents & Development Limited
    Inventors: Edward W. Underhill, John W. Wong, Pachagounder Palaniswamy, Warren F. Steck, Melvin D. Chisholm
  • Patent number: 4575458
    Abstract: Moths of the armyworm Pseudaletia unipuncta have been found to be attracted strongly to mixtures of three or four chemical compounds. The mixtures found to be the most powerful and specific attractants are those comprising:(a) (Z)-11-hexadecenyl acetate(b) (Z)-11-hexadecenol and(c) (Z)-11-hexadecenal, preferably with(d) (Z)-9-tetradecenyl acetate.The respective weight ratios for the best effect were found to be approximately 10000:20:4:1.
    Type: Grant
    Filed: September 29, 1982
    Date of Patent: March 11, 1986
    Assignee: Canadian Patents and Development Limited
    Inventors: Warren F. Steck, Edward W. Underhill, Melvin D. Chisholm, Berton K. Bailey
  • Patent number: 4452006
    Abstract: A cone-orifice insect trap comprising an intermediate annular member carrying a lure and two truncated-cone-shaped casing members with perforated, funnel-shaped, insect trapping end walls extending inwardly from each end of the casing members. The modular construction ensures ease of assembly while the casing members may be nested together to avoid occupying an unduly large volume during, for example, transport. Close manufacturing tolerances for the insect trap entrances and positioning the lure reduce trap-to-trap performance variability. The trap has a long field life and a wide variety of uses.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: June 5, 1984
    Assignee: National Research Council of Canada
    Inventors: Warren F. Steck, Edward W. Underhill, Melvin D. Chisholm, Berton K. Bailey
  • Patent number: 4413159
    Abstract: In order to provide push-button telephone service to those telephone systems not equipped to respond to multifrequency dialing signals, it is necessary to convert push-button dialed digits into conventional dial pulses. A pulse train consisting of make and break intervals representing the dialed digit is electronically converted (107) into a corresponding series of make and break intervals on the telephone line (102, 103) by switching (106, 108-1, 108-2) a pulsing transistor (101) that is in series with the telephone line ON and OFF. In order to keep the pulsing transistor ON during nondialing intervals and during each make interval, and not attenuate the voice signal, the pulsing transistor is biased by an adjustable current source (105). The current needed to bias the pulsing transistor ON is linearly related to the telephone line current flowing through the emitter-collector path of the transistor, and which varies considerably from station-to-station.
    Type: Grant
    Filed: April 2, 1982
    Date of Patent: November 1, 1983
    Assignee: Bell Telephone Laboratories, Incorporated
    Inventors: Donald D. Huizinga, Donald R. Means, Edward W. Underhill
  • Patent number: 4284622
    Abstract: An attractant has been found for the male sunflower moth Homoeosoma electellum (Hulst.). Z-9,E-12-tetradecadien-1-ol has been found effective, optionally in the presence of Z-9-tetradecen-1-ol.
    Type: Grant
    Filed: March 28, 1980
    Date of Patent: August 18, 1981
    Assignee: Canadian Patents & Development Ltd.
    Inventors: Edward W. Underhill, Warren F. Steck, Melvin D. Chisholm, Alfred P. Arthur
  • Patent number: 4042681
    Abstract: Mixtures of two compounds Z-11-hexadecen-1-ol acetate (A) and Z-9-tetradecen-1-ol acetate (B) exhibit high and species specific attractancy for the male Bertha Armyworm moth. The optimum attractant and specificity effect has been observed at proportions of about 95% A and 5% B. A dose of about 0.1 to 10 mg of the attractant per insect trap has been found effective. Neither A nor B alone are good attractants for the Bertha moth, although A alone has slight attractancy.
    Type: Grant
    Filed: December 22, 1975
    Date of Patent: August 16, 1977
    Assignee: Canadian Patents and Development Limited
    Inventors: Edward W. Underhill, Melvin D. Chisholm, Warren F. Steck, Berton K. Bailey, Peter M. Lamb, Dean L. Struble, G. Edward Swailes