Patents by Inventor Alan D. Thomas

Alan D. Thomas 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: 20230217894
    Abstract: Systems and devices in accordance with embodiments provide one or more tags for use with horses and/or riders, to provide readily-visible and accessible horse or rider information. For example, a horse tag is configured to be semi-permanently affixed to a portion of a mane and includes one or more strips of fluorescent material and/or a reflective, recognizable symbol indicating information about the horse is available.
    Type: Application
    Filed: January 13, 2022
    Publication date: July 13, 2023
    Inventors: Nancy J. Thomas, Alan D. Thomas
  • Patent number: 10647844
    Abstract: A method for synthesizing polyacrylonitrile (PAN) polymer with a narrow molecular weight distribution is disclosed. The preferred PAN polymer has a PDI (Mw/Mn) of about 2 or less. Such PAN polymer is synthesized by controlled/living radical polymerization using a special RAFT (Reversible Addition-Fragmentation Chain Transfer) agent. Also disclosed is a method for producing carbon fibers from PAN polymer with low PDI.
    Type: Grant
    Filed: January 25, 2019
    Date of Patent: May 12, 2020
    Assignee: Cytec Industries Inc.
    Inventors: Longgui Tang, Alan D. Thomas, Billy D. Harmon
  • Publication number: 20190153211
    Abstract: A method for synthesizing polyacrylonitrile (PAN) polymer with a narrow molecular weight distribution is disclosed. The preferred PAN polymer has a PDI (Mw/Mn) of about 2 or less. Such PAN polymer is synthesized by controlled/living radical polymerization using a special RAFT (Reversible Addition-Fragmentation Chain Transfer) agent. Also disclosed is a method for producing carbon fibers from PAN polymer with low PDI.
    Type: Application
    Filed: January 25, 2019
    Publication date: May 23, 2019
    Applicant: Cytec Industries Inc.
    Inventors: Longgui TANG, Alan D. THOMAS, Billy D. HARMON
  • Patent number: 10189985
    Abstract: A method for synthesizing polyacrylonitrile (PAN) polymer with a narrow molecular weight distribution is disclosed. The preferred PAN polymer has a PDI (Mw/Mn) of about 2 or less. Such PAN polymer is synthesized by controlled/living radical polymerization using a special RAFT (Reversible Addition-Fragmentation Chain Transfer) agent. Also disclosed is a method for producing carbon fibers from PAN polymer with low PDI.
    Type: Grant
    Filed: March 16, 2018
    Date of Patent: January 29, 2019
    Assignee: CYTEC INDUSTRIES INC.
    Inventors: Longgui Tang, Alan D. Thomas, Billy D. Harmon
  • Publication number: 20180207849
    Abstract: A method for synthesizing polyacrylonitrile (PAN) polymer with a narrow molecular weight distribution is disclosed. The preferred PAN polymer has a PDI (Mw/Mn) of about 2 or less. Such PAN polymer is synthesized by controlled/living radical polymerization using a special RAFT (Reversible Addition-Fragmentation Chain Transfer) agent. Also disclosed is a method for producing carbon fibers from PAN polymer with low PDI.
    Type: Application
    Filed: March 16, 2018
    Publication date: July 26, 2018
    Inventors: Longgui Tang, Alan D. Thomas, Billy D. Harmon
  • Patent number: 9957645
    Abstract: A method for synthesizing polyacrylonitrile (PAN) polymer with a narrow molecular weight distribution is disclosed. The preferred PAN polymer has a PDI (Mw/Mn) of about 2 or less. Such PAN polymer is synthesized by controlled/living radical polymerization using a special RAFT (Reversible Addition-Fragmentation Chain Transfer) agent. Also disclosed is a method for producing carbon fibers from PAN polymer with low PDI.
    Type: Grant
    Filed: November 21, 2014
    Date of Patent: May 1, 2018
    Assignee: CYTEC INDUSTRIES INC.
    Inventors: Longgui Tang, Alan D. Thomas, Billy D. Harmon
  • Publication number: 20150174807
    Abstract: A method for synthesizing polyacrylonitrile (PAN) polymer with a narrow molecular weight distribution is disclosed. The preferred PAN polymer has a PDI (Mw/Mn) of about 2 or less. Such PAN polymer is synthesized by controlled/living radical polymerization using a special RAFT (Reversible Addition-Fragmentation Chain Transfer) agent. Also disclosed is a method for producing carbon fibers from PAN polymer with low PDI.
    Type: Application
    Filed: November 21, 2014
    Publication date: June 25, 2015
    Applicant: CYTEC INDUSTRIES INC.
    Inventors: Longgui Tang, Alan D. Thomas, Billy D. Harmon
  • Patent number: 5400825
    Abstract: A rotary valve noise attenuator with a rotary ball control element and a noise attenuator member mounted in the ball having multiple, elongated, substantially enclosed channels formed across the valve opening to split the flow stream into several smaller flow streams. The channel walls are perforated so each smaller flow stream is further dispersed and diffused into many minute flow streams after entering the channel. A noise attenuator constructed of several corrugated sections fixed crest to crest to form several diamond shaped channels across the valve opening each having four side walls with holes.
    Type: Grant
    Filed: May 26, 1994
    Date of Patent: March 28, 1995
    Assignee: Fisher Controls International, Inc.
    Inventors: Douglas P. Gethmann, Allen C. Fagerlund, Charles R. Kuhlman, Ronnie L. Smith, Alan D. Thomas, Larry J. Weber
  • Patent number: 5332004
    Abstract: A rotary valve noise attenuator with a rotary ball control element and a noise attenuator member mounted in the ball having multiple, elongated, substantially enclosed channels formed across the valve opening to split the flow stream into several smaller flow streams. The channel walls are perforated so each smaller flow stream is further dispersed and diffused into many minute flow streams after entering the channel. A noise attenuator constructed of several corrugated sections fixed crest to crest to form several diamond shaped channels across the valve opening each having four side walls with holes.
    Type: Grant
    Filed: February 23, 1993
    Date of Patent: July 26, 1994
    Assignee: Fisher Controls International, Inc.
    Inventors: Douglas P. Gethmann, Allen C. Fagerlund, Charles R. Kuhlman, Ronnie L. Smith, Alan D. Thomas, Larry J. Weber
  • Patent number: 5193583
    Abstract: A rotary valve noise attenuator with a rotary ball control element and a noise attenuator member mounted in the ball having multiple, elongated, substantially enclosed channels formed across the valve opening to split the flow stream into several smaller flow streams. The channel walls are perforated so each smaller flow stream is further dispersed and diffused into many minute flow streams after entering the channel. A noise attenuator constructed of several corrugated sections fixed crest to crest to form several diamond shaped channels across the valve opening each having four side walls with holes.
    Type: Grant
    Filed: August 30, 1991
    Date of Patent: March 16, 1993
    Assignee: Fisher Controls International, Inc.
    Inventors: Douglas P. Gethmann, Allen C. Fagerlund, Charles R. Kuhlman, Ronnie L. Smith, Alan D. Thomas, Larry J. Weber
  • Patent number: 4984464
    Abstract: An acceleration responsive circuit is provided including an electronic accelerometer having an analog electrical signal output representative of detected acceleration which signal is inputted into an analog/digital converter to provide a digital signal in response to the accelerometer output together with an integrator for integrating the digital signal and, in the event a threshold acceleration has been exceeded, an operating circuit is energized to activate selected equipment such as, for example, the inflator for an airbag.
    Type: Grant
    Filed: October 13, 1989
    Date of Patent: January 15, 1991
    Assignee: First Inertia Switch Limited
    Inventors: Alan D. Thomas, Hoshmand Kalami
  • Patent number: 4533801
    Abstract: Movement of an inertia mass (4) from a rest position as a result of acceleration or deceleration in excess of a given threshold value causes a hinge-like assembly (8) having two parts (9 and 10) to pivot between two overcenter positions on either side of a center position in which the two parts (9 and 10) occupy a common plane to thereby cause movable electrical contacts (14 and 15) forming part of the hinge-like assembly (8) to engage or separate from further electrical contacts (31 and 32).
    Type: Grant
    Filed: July 26, 1983
    Date of Patent: August 6, 1985
    Assignee: First Inertia Switch Limited
    Inventors: Peter R. Jackman, Alan D. Thomas