Patents by Inventor John J. Callahan

John J. Callahan 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: 10686293
    Abstract: A system for self-aligning assembly and packaging of semiconductor lasers allows reduction of time, cost and testing expenses for high power density systems. A laser package mounting system, such as a modified TO-can (transistor outline can), has modifications that increase heat transfer from the active laser to a heat exchanger or other heat sink. A prefabricated heat exchanger assembly mounts both a laser package and one or more lenses. Direct mounting of a fan assembly to the package further minimizes assembly steps. Components may be physically and optically aligned during assembly by clocking and other indexing means, so that the entire system is self-aligned and focused by the assembly process without requiting post-assembly adjustment. This system can lower costs and thereby enable the use of high powered semiconductor lasers in low cost, high volume production, such as consumer items.
    Type: Grant
    Filed: December 8, 2016
    Date of Patent: June 16, 2020
    Assignee: Seminex Corporation
    Inventors: David M. Bean, John J. Callahan
  • Publication number: 20170093122
    Abstract: A system for self-aligning assembly and packaging of semiconductor lasers allows reduction of time, cost and testing expenses for high power density systems. A laser package mounting system, such as a modified TO-can (transistor outline can), has modifications that increase heat transfer from the active laser to a heat exchanger or other heat sink. A prefabricated heat exchanger assembly mounts both a laser package and one or more lenses. Direct mounting of a fan assembly to the package further minimizes assembly steps. Components may be physically and optically aligned during assembly by clocking and other indexing means, so that the entire system is self-aligned and focused by the assembly process without requiting post-assembly adjustment. This system can lower costs and thereby enable the use of high powered semiconductor lasers in low cost, high volume production, such as consumer items.
    Type: Application
    Filed: December 8, 2016
    Publication date: March 30, 2017
    Inventors: David M. Bean, John J. Callahan
  • Patent number: 9537284
    Abstract: A system for self-aligning assembly and packaging of semiconductor lasers allows reduction of time, cost and testing expenses for high power density systems. A laser package mounting system, such as a modified TO-can (transistor outline can), has modifications that increase heat transfer from the active laser to a heat exchanger or other heat sink. A prefabricated heat exchanger assembly mounts both a laser package and one or more lenses. Direct mounting of a fan assembly to the package further minimizes assembly steps. Components may be physically and optically aligned during assembly by clocking and other indexing means, so that the entire system is self-aligned and focused by the assembly process without requiring post-assembly adjustment. This system can lower costs and thereby enable the use of high powered semiconductor lasers in low cost, high volume production, such as consumer items.
    Type: Grant
    Filed: July 8, 2014
    Date of Patent: January 3, 2017
    Assignee: SemiNex Corporation
    Inventors: David M. Bean, John J. Callahan
  • Publication number: 20140322840
    Abstract: A system for self-aligning assembly and packaging of semiconductor lasers allows reduction of time, cost and testing expenses for high power density systems. A laser package mounting system, such as a modified TO-can (transistor outline can), has modifications that increase heat transfer from the active laser to a heat exchanger or other heat sink. A prefabricated heat exchanger assembly mounts both a laser package and one or more lenses. Direct mounting of a fan assembly to the package further minimizes assembly steps. Components may be physically and optically aligned during assembly by clocking and other indexing means, so that the entire system is self-aligned and focused by the assembly process without requiring post-assembly adjustment. This system can lower costs and thereby enable the use of high powered semiconductor lasers in low cost, high volume production, such as consumer items.
    Type: Application
    Filed: July 8, 2014
    Publication date: October 30, 2014
    Inventors: David M. Bean, John J. Callahan
  • Patent number: 8811439
    Abstract: A system for self-aligning assembly and packaging of semiconductor lasers allows reduction of time, cost and testing expenses for high power density systems. A laser package mounting system, such as a modified TO-can (transistor outline can), has modifications that increase heat transfer from the active laser to a heat exchanger or other heat sink. A prefabricated heat exchanger assembly mounts both a laser package and one or more lenses. Direct mounting of a fan assembly to the package further minimizes assembly steps. Components may be physically and optically aligned during assembly by clocking and other indexing means, so that the entire system is self-aligned and focused by the assembly process without requiring post-assembly adjustment. This system can lower costs and thereby enable the use of high powered semiconductor lasers in low cost, high volume production, such as consumer items.
    Type: Grant
    Filed: November 23, 2009
    Date of Patent: August 19, 2014
    Assignee: SemiNex Corporation
    Inventors: David M. Bean, John J. Callahan
  • Publication number: 20110122905
    Abstract: A system for self-aligning assembly and packaging of semiconductor lasers allows reduction of time, cost and testing expenses for high power density systems. A laser package mounting system, such as a modified TO-can (transistor outline can), has modifications that increase heat transfer from the active laser to a heat exchanger or other heat sink. A prefabricated heat exchanger assembly mounts both a laser package and one or more lenses. Direct mounting of a fan assembly to the package further minimizes assembly steps. Components may be physically and optically aligned during assembly by clocking and other indexing means, so that the entire system is self-aligned and focused by the assembly process without requiring post-assembly adjustment. This system can lower costs and thereby enable the use of high powered semiconductor lasers in low cost, high volume production, such as consumer items.
    Type: Application
    Filed: November 23, 2009
    Publication date: May 26, 2011
    Applicant: SEMINEX CORPORATION
    Inventors: David M. Bean, John J. Callahan
  • Patent number: 6527208
    Abstract: A process, and associated apparatus, that separates the economic components of scrapped rubber tires while isolating and removing certain levels of contamination associated with these tires. The separation of the scrap tires contaminants is accomplished by shredding, washing, and rasping the tire product. The continual laboratory testing of the waste wash water and removal of the contaminates and particulates will produce an end-product of 3 to 100 mesh/crumb which will be virtually without contamination. The quality of the end-product is further enhanced by the associated quality apparatus that removes the steel and fiber products in addition to any contaminants.
    Type: Grant
    Filed: November 14, 2000
    Date of Patent: March 4, 2003
    Inventors: John J. Callahan, Richard N. Hyland, Kevin J. Kelly
  • Patent number: H346
    Abstract: The compounds of S-(2-dialkylaminoalkyl) alkyl phosphonothioic acids and hod of preparing said compounds possessing anticholinesterase activity comprising an aqueous solution which comprises dialkylaminoalkyl chloride salts which are converted to their corresponding dialkylmonoalkyl ammonium ions and alkylphosphonothioic acids forming a reaction mixture. The latter mixture is placed on a cation exchange resin with subsequent addition of water as an eluting agent giving rise to fractions containing the desired compounds.
    Type: Grant
    Filed: February 5, 1969
    Date of Patent: October 6, 1987
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Joseph Epstein, Harry O. Michel, Robert E. Plapinger, Joseph H. Fleisher, John J. Callahan, Bernard J. Jandorf
  • Patent number: D649636
    Type: Grant
    Filed: January 21, 2011
    Date of Patent: November 29, 2011
    Assignee: SemiNex Corporation
    Inventors: David M. Bean, Christopher R. Rafferty, John J. Callahan