Patents by Inventor Keith Stephens

Keith Stephens 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).

  • Publication number: 20060223915
    Abstract: The present invention relates to a bituminous composition comprising a bituminous component, an elastomeric polymer component, and a specific cross-linking composition component comprising elemental sulfur, a sulfur-containing derivative, a sulfur activator, a fatty acid or fatty acid derivative and a polymeric carrier. Compositions according to the invention are particularly useful in preparing polymer-modified asphalt (“PMA”) for road applications.
    Type: Application
    Filed: March 31, 2005
    Publication date: October 5, 2006
    Applicant: KRATON Polymers U.S. LLC
    Inventor: Keith Stephens
  • Patent number: 6989768
    Abstract: A recognition light includes a reflector having an axis and first and second annular semi-parabolic reflective surfaces which have respective focal points axially spaced apart from one another, and first and second annular lamps respectively disposed at the focal points. A cover surrounds the reflector and lamps and includes a lens for focusing the light along a plane perpendicular to the axis of the reflector, the lens including first and second Fresnel lens portions each including a convex lens and a prism lens, the convex lenses being disposed adjacent one another and transaxially aligned with the first and second lamps, respectively. A light detector detects light emitted from at least one of the lamps, a monitor circuit provides a fail signal when a characteristic of the light output of at least one of the lamps does not satisfy a specified criteria, and a control circuit first activates the first lamp and then the second lamp in response to receipt of the fail signal of the monitor circuit.
    Type: Grant
    Filed: September 2, 2003
    Date of Patent: January 24, 2006
    Assignee: Goodrich Corporation
    Inventors: Ralph Anthony DeMarco, Raymond Henry Draves, Timothy Scott Kielbon, Todd Christopher Knight, Anish Vikram Patel, Merle Keith Stephens
  • Publication number: 20040075575
    Abstract: A recognition light includes a reflector having an axis and first and second annular semi-parabolic reflective surfaces which have respective focal points axially spaced apart from one another, and first and second annular lamps respectively disposed at the focal points. A cover surrounds the reflector and lamps and includes a lens for focusing the light along a plane perpendicular to the axis of the reflector, the lens including first and second Fresnel lens portions each including a convex lens and a prism lens, the convex lenses being disposed adjacent one another and transaxially aligned with the first and second lamps, respectively. A light detector detects light emitted from at least one of the lamps, a monitor circuit provides a fail signal when a characteristic of the light output of at least one of the lamps does not satisfy a specified criteria, and a control circuit first activates the first lamp and then the second lamp in response to receipt of the fail signal of the monitor circuit.
    Type: Application
    Filed: September 2, 2003
    Publication date: April 22, 2004
    Inventors: Ralph Anthony DeMarco, Raymond Henry Draves, Timothy Scott Kielbon, Todd Christopher Knight, Anish Vikram Patel, Merle Keith Stephens
  • Patent number: 6680334
    Abstract: The present invention relates to amlodipine free base in a crystalline form, to pharmaceutical formulations comprising such material, processes of manufacture and its use in therapy.
    Type: Grant
    Filed: August 20, 2002
    Date of Patent: January 20, 2004
    Assignee: Pfizer Inc
    Inventors: Alan Craig Bentham, Alan John Pettman, Keith Stephen Ruddock
  • Patent number: 6642856
    Abstract: A recognition light includes a reflector having an axis and first and second annular semi-parabolic reflective surfaces which have respective focal points axially spaced apart from one another, and first and second annular lamps respectively disposed at the focal points. A cover surrounds the reflector and lamps and includes a lens for focusing the light along a plane perpendicular to the axis of the reflector, the lens including first and second Fresnel lens portions each including a convex lens and a prism lens, the convex lenses being disposed adjacent one another and transaxially aligned with the first and second lamps, respectively. A light detector detects light emitted from at least one of the lamps, a monitor circuit provides a fail signal when a characteristic of the light output of at least one of the lamps does not satisfy a specified criteria, and a control circuit first activates the first lamp and then the second lamp in response to receipt of the fail signal of the monitor circuit.
    Type: Grant
    Filed: August 21, 2001
    Date of Patent: November 4, 2003
    Assignee: Goodrich Lighting Systems, Inc.
    Inventors: Ralph Anthony DeMarco, Raymond Henry Draves, Timothy Scott Kielbon, Todd Christopher Knight, Anish Vikram Patel, Merle Keith Stephens
  • Publication number: 20030119883
    Abstract: The present invention relates to amlodipine free base in a crystalline form, to pharmaceutical formulations comprising such material, processes of manufacture and its use in therapy.
    Type: Application
    Filed: August 20, 2002
    Publication date: June 26, 2003
    Applicant: Pfizer Inc.
    Inventors: Alan Craig Bentham, Alan John Pettman, Keith Stephen Ruddock
  • Publication number: 20020080023
    Abstract: A recognition light includes a reflector having an axis and first and second annular semi-parabolic reflective surfaces which have respective focal points axially spaced apart from one another, and first and second annular lamps respectively disposed at the focal points. A cover surrounds the reflector and lamps and includes a lens for focusing the light along a plane perpendicular to the axis of the reflector, the lens including first and second Fresnel lens portions each including a convex lens and a prism lens, the convex lenses being disposed adjacent one another and transaxially aligned with the first and second lamps, respectively. A light detector detects light emitted from at least one of the lamps, a monitor circuit provides a fail signal when a characteristic of the light output of at least one of the lamps does not satisfy a specified criteria, and a control circuit first activates the first lamp and then the second lamp in response to receipt of the fail signal of the monitor circuit.
    Type: Application
    Filed: August 21, 2001
    Publication date: June 27, 2002
    Inventors: Ralph Anthony DeMarco, Raymond Henry Draves, Timothy Scott Kielbon, Todd Christopher Knight, Anish Vikram Patel, Merle Keith Stephens
  • Patent number: 6278382
    Abstract: A recognition light includes a reflector having an axis and first and second annular semi-parabolic reflective surfaces which have respective focal points axially spaced apart from one another, and first and second annular lamps respectively disposed at the focal points. A cover surrounds the reflector and lamps and includes a lens for focusing the light along a plane perpendicular to the axis of the reflector, the lens including first and second Fresnel lens portions each including a convex lens and a prism lens, the convex lenses being disposed adjacent one another and transaxially aligned with the first and second lamps, respectively. A light detector detects light emitted from at least one of the lamps, a monitor circuit provides a fail signal when a characteristic of the light output of at least one of the lamps does not satisfy a specified criteria, and a control circuit first activates the first lamp and then the second lamp in response to receipt of the fail signal of the monitor circuit.
    Type: Grant
    Filed: November 6, 1998
    Date of Patent: August 21, 2001
    Inventors: Ralph Anthony DeMarco, Raymond Henry Draves, Timothy Scott Kielbon, Todd Christopher Knight, Anish Vikram Patel, Merle Keith Stephens
  • Patent number: 5956486
    Abstract: A method for monitoring multiple electronic mail systems includes the steps of: a) configuring an e-mail system polling process on a user's machine; b) polling a number of e-mail systems from the user's machine; c) retrieving data from the e-mail systems concerning mail intended for the user; and d) storing the data on the user's machine in a format that permits the storage and retrieval of data pertaining to the plurality of e-mail systems. The polling can be accomplished in the background while the user is performing other tasks on the computer system. An apparatus for monitoring multiple electronic mail systems includes a digital processor, read/write memory coupled to the digital processor, and at least one external communication channel coupled to the digital processor permitting the digital processor to communicate with a plurality of external electronic mail systems.
    Type: Grant
    Filed: December 20, 1995
    Date of Patent: September 21, 1999
    Inventors: Paul Lawrence Hickman, Lawrence Keith Stephens
  • Patent number: 4847785
    Abstract: A system for the interactive control of a display such as a CRT (cathode ray tube) or the like, produces a visual representation of at least one variable in the form of a trend or bar graph. The system includes a personal computer having a cursor control and a display. The system operator can select a variable for display, and then select a location within which the visual representation of the variable is to appear and a range of the variable which is to be displayed within the selected region. The system responds to the operator's selections for producing a visual representation in the form of a trend or bar graph of the selected variable within the selected range at the operator-selected location.
    Type: Grant
    Filed: January 22, 1985
    Date of Patent: July 11, 1989
    Assignee: International Business Machines Corp.
    Inventor: L. Keith Stephens