Patents by Inventor Wendy H Howie

Wendy H Howie 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).

  • Triboluminescent materials and devices
    Patent number: 7242443
    Abstract: The invention relates to various materials and their use in applications which exploit the triboluminescent effect.
    Type: Grant
    Filed: August 6, 2002
    Date of Patent: July 10, 2007
    Assignee: Qinetiq Limited
    Inventors: Ian C Sage, Wendy H Howie, Ian D Brotherston
  • Photoluminescent compounds
    Patent number: 7230127
    Abstract: Triboluminescent materials comprising M wherein M is chosen from Tb, Eu, Sm, Dy and from 75% to 99.99% of M is replaced by Y, Gd, La or Lu.
    Type: Grant
    Filed: August 6, 2002
    Date of Patent: June 12, 2007
    Assignee: Qinetiq Limited
    Inventors: Ian C Sage, Wendy H Howie, Ian D Brotherston
  • Photoluminescent compounds
    Publication number: 20040245503
    Abstract: A method of making a 3-alkylcycloalkanol of formula 2: where RI represents a methyl or ethyl group, R2 represents hydrogen, R3 represents an ethyl, propyl, butyl, isobutyl or isoamyl group, R4 represents hydrogen and R5 represents hydrogen, or a methyl, ethyl, propyl, isobutyl or isoamyl group comprises the following steps: (1) carrying out an electrophilic substitution reaction of an alkyl group or precursor thereof, on an ortho-substituted alkylbenzene compound of formula 3: where R6 represents hydrogen, or a methyl or ethyl group; (2) hydrogenating the reaction product of step (1); (3) performing an elimination reaction on one or more reaction products of step (2) to produce one or more alkene products; and (4) hydrating the one or more alkene products of step (3) to provide a 3-alkylcycloalkanol of formula 2. The electrophilic substitution reaction of step (1) may be a Friedel-Crafts acylation, e.g. using an isopropyl ketone precursor, or a Friedel-Crafts alkylation, e.g. using an isobutyl group.
    Type: Application
    Filed: February 17, 2004
    Publication date: December 9, 2004
    Inventors: Ian C Sage, Wendy H Howie, Ian D Brotherston
  • Triboluminescent materials and devices
    Publication number: 20040233347
    Abstract: The invention relates to various materials and their use in applications which exploit the triboluminescent effect.
    Type: Application
    Filed: February 17, 2004
    Publication date: November 25, 2004
    Inventors: Ian C Sage, Wendy H Howie, Ian D Brotherston