Patents by Inventor John Carolan

John Carolan 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).

  • Super-hard structure, tool element and method of making same
    Patent number: 10053755
    Abstract: A method for treating a super-hard structure, the method including heating the super-hard structure to a treatment temperature of at least 500 degrees centigrade and cooling the super-hard structure from the treatment temperature to a temperature of less than 200 degrees centigrade at a mean cooling rate of at least 1 degree centigrade per second and at most 100 degrees centigrade per second to provide a treated super-hard structure. A PCBN structure produced by the method may have flexural strength of at least 650 MPa.
    Type: Grant
    Filed: May 25, 2012
    Date of Patent: August 21, 2018
    Assignee: Element Six Limited
    Inventors: Declan John Carolan, Neal Murphy, Alojz Ivankovic
  • SUPER-HARD STRUCTURE, TOOL ELEMENT AND METHOD OF MAKING SAME
    Publication number: 20140325915
    Abstract: A method for treating a super-hard structure, the method including heating the super-hard structure to a treatment temperature of at least 500 degrees centigrade and cooling the super-hard structure from the treatment temperature to a temperature of less than 200 degrees centigrade at a mean cooling rate of at least 1 degree centigrade per second and at most 100 degrees centigrade per second to provide a treated super-hard structure. A PCBN structure produced by the method may have flexural strength of at least 650 MPa.
    Type: Application
    Filed: May 25, 2012
    Publication date: November 6, 2014
    Inventors: Declan John Carolan, Neal Murphy, Alojz Ivankovic
  • Process for preparing dibenzocycloheptene compounds
    Patent number: 5932767
    Abstract: Protriptyline can be prepared from 5-dihydrodibenzocycloheptatriene, by deprotonation, followed by reaction at low temperatures with 1,3-bromochloropropane to give the 5-(chloropropyl)-dibenzocycloheptatriene, which is reacted with methylamine in a displacement reaction to give the protriptyline product.
    Type: Grant
    Filed: December 22, 1997
    Date of Patent: August 3, 1999
    Assignee: Merck & Co., Inc.
    Inventors: Robert S. Hoerrner, Joseph Auerbach, John Carolan