Patents by Inventor Mark R. Logan

Mark R. Logan 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).

  • Systems and methods for facilitating communications involving hearing-impaired parties
    Patent number: 7573985
    Abstract: A method for providing communication services for the hearing-impaired may include receiving a telephone call from a hearing-impaired party or a hearing party. The method may also include forwarding the telephone call to a communication assistant and establishing a communication link, such an Internet protocol link, that links the hearing-impaired party, the communication assistant and the hearing party.
    Type: Grant
    Filed: June 21, 2005
    Date of Patent: August 11, 2009
    Assignee: Verizon Business Global LLC
    Inventors: William A. McClelland, Steven C. Johnson, Mark R. Logan, Chris R. Heidelbauer, Benjamin W. Dudley, Kurt P. Haldeman
  • Systems and methods for facilitating communications involving hearing-impaired parties
    Patent number: 7142642
    Abstract: A method for providing communication services for the hearing-impaired may include receiving a telephone call having a terminating number associated with a hearing-impaired party. The method may also include forwarding the telephone call to a communication assistant and establishing a communication link from the communication assistant to the hearing-impaired party based on the terminating number.
    Type: Grant
    Filed: November 3, 2004
    Date of Patent: November 28, 2006
    Assignee: MCI, LLC
    Inventors: William A. McClelland, Steven C. Johnson, Mark R. Logan, Ivaylo I. Ivanov, Benjamin W. Dudley, Kurt P. Haldeman, Chris R. Heidelbauer
  • Sulfur containing lubricating oil additive system particularly useful for natural gas fueled engines
    Publication number: 20040142827
    Abstract: A lubricating oil comprising a major amount of at least one of Group II, III, and IV base oil and a minor amount of 2-(4-hydroxy-3,5-di-t-butyl benzyl thiol) acetate. A method of making this lubricating oil and a method of lubricating a natural gas engine with this lubricating oil.
    Type: Application
    Filed: November 29, 2001
    Publication date: July 22, 2004
    Inventors: John D. Palazzotto, Mark R. Logan
  • Lubricating oil having enhanced resistance to oxidation, nitration and viscosity increase
    Patent number: 6756348
    Abstract: This invention is directed to an antioxidant system for use in lubricating oils comprising sulfurized isobutylene and hindered phenols that provides enhanced oxidation resistance and is particularly useful in natural gas fueled engines, the method for making this antioxidant system, lubricating oils comprising the antioxidant system and methods for lubricating engines using lubricating oil comprising this antioxidant system.
    Type: Grant
    Filed: November 29, 2001
    Date of Patent: June 29, 2004
    Assignee: Chevron Oronite Company LLC
    Inventors: John D. Palazzotto, Mark R. Logan
  • Lubricating oil additive comprising EC-treated succinimide, borated dispersant and corrosion inhibitor
    Publication number: 20030224948
    Abstract: An additive formulation comprising one or more ec-treated dispersants, borated dispersants, and a dispersed aromatic dicarboxylic acid corrosion inhibitor; a dispersant inhibitor package comprising one or more ec-treated dispersants, borated dispersants, and a dispersed aromatic dicarboxylic acid corrosion inhibitor; a lubricating oil comprising said dispersant inhibitor package; and a method for lubricating engines.
    Type: Application
    Filed: February 14, 2003
    Publication date: December 4, 2003
    Inventors: Willem Van Dam, Michael T. Menasco, James J. Harrison, Mark R. Logan
  • Lubricating oil additive system particularly useful for natural gas fueled engines
    Patent number: 6642191
    Abstract: A lubricating oil comprising a major amount of at least one of Group II, III, and IV base oil and a minor amount of 3,5-di-t-butyl 4-hydroxy phenol propionate. A method of making this lubricating oil and a method of lubricating a natural gas engine with this lubricating oil.
    Type: Grant
    Filed: November 29, 2001
    Date of Patent: November 4, 2003
    Assignee: Chevron Oronite Company LLC
    Inventors: John D. Palazzotto, Mark R. Logan
  • LUBRICATING OIL ADDITIVE SYSTEM PARTICULARLY USEFUL FOR NATURAL GAS FUELED ENGINES
    Publication number: 20030148900
    Abstract: A lubricating oil comprising a major amount of at least one of Group II, III, and IV base oil and a minor amount of 3,5-di-t-butyl 4-hydroxy phenol propionate. A method of making this lubricating oil and a method of lubricating a natural gas engine with this lubricating oil.
    Type: Application
    Filed: November 29, 2001
    Publication date: August 7, 2003
    Inventors: John D. Palazzotto, Mark R. Logan
  • Lubricating oil having enhanced resistance to oxidation, nitration and viscosity increase
    Publication number: 20030139304
    Abstract: This invention is directed to an antioxidant system for use in lubricating oils comprising sulfurized isobutylene and hindered phenols that provides enhanced oxidation resistance and is particularly useful in natural gas fueled engines, the method for making this antioxidant system, lubricating oils comprising the antioxidant system and methods for lubricating engines using lubricating oil comprising this antioxidant system.
    Type: Application
    Filed: November 29, 2001
    Publication date: July 24, 2003
    Inventors: John D. Palazzotto, Mark R. Logan
  • Ashless lubricating oil formulation for natural gas engines
    Patent number: 6001780
    Abstract: The present invention provides an ashless lubricating oil composition that improves the corrosion properties in natural gas engines. The ashless lubricating oil composition comprises:a) a major amount of base oil of lubricating viscosity;b) from about 1 to 6 wt % of an untreated polyalkylene or polyalkenyl succinimide dispersant; andc) from about 1 to 6 wt % of a borated polyalkylene or polyalkenyl succinimide dispersant.
    Type: Grant
    Filed: June 30, 1998
    Date of Patent: December 14, 1999
    Assignee: Chevron Chemical Company LLC
    Inventors: Andrew W. Ho, Mark R. Logan, Laura J. Whaley