Patents by Inventor Pierre Nazareth Tutunjian

Pierre Nazareth Tutunjian 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).

  • Method for improving the precision of time domain low field H-NMR analysis
    Patent number: 7656157
    Abstract: A method for improving the precision of time domain low field H-NMR analysis, the method comprising rotating a sample within a RF coil and acquiring multiple time domain signals for the sample at multiple orientations within the RF coil.
    Type: Grant
    Filed: August 6, 2007
    Date of Patent: February 2, 2010
    Assignee: Shell Oil Company
    Inventors: Thomas Riddel Smith, Pierre Nazareth Tutunjian
  • Polyfunctional polyolefins
    Patent number: 6448333
    Abstract: A grafted polyolefin polymers having high polarity produced by grafting bi-functional N-substituted diacids to maleated or other functional group grafted polyolefin. The new polymers exhibit improved water miscibility, compatability and good adhesion to polar materials such as nylon, polyester, glass, and metal substrates.
    Type: Grant
    Filed: December 16, 1999
    Date of Patent: September 10, 2002
    Assignee: Shell Oil Company
    Inventors: Manuel Soler Rodriguez, Pierre Nazareth Tutunjian, Charles Lee Edwards, Paul Karol Casey, Carlton Edwin Ash, Charles C. Hwo, Pui Kwan Wong
  • Preformed multi-acid adducts useful for grafting polyolefin polymers
    Publication number: 20010007001
    Abstract: The present invention relates to reaction products formed from maleic anhydride and amino carboxylic acids. The reaction products are particularly useful for grafting polyolefins to increase their polarity and therefore enhance their physical properties.
    Type: Application
    Filed: January 16, 2001
    Publication date: July 5, 2001
    Inventors: Manuel Soler Rodriguez, Charles Chiu-Hsiung Hwo, Pui Kwan Wong, Pierre Nazareth Tutunjian, Charles Lee Edwards
  • Preformed multi-acid adducts useful for grafting polyolefin polymers
    Patent number: 6221967
    Abstract: The present invention relates to reaction products formed from maleic anhydride and amino carboxylic acids. The reaction products are particularly useful for grafting polyolefins to increase their polarity and therefore enhance their physical properties.
    Type: Grant
    Filed: December 16, 1999
    Date of Patent: April 24, 2001
    Assignee: Shell Oil Company
    Inventors: Manuel Soler Rodriguez, Charles Chiu-Hsiung Hwo, Pui Kwan Wong, Pierre Nazareth Tutunjian, Charles Lee Edwards
  • NMR logging of natural gas reservoirs
    Patent number: 6094048
    Abstract: A method is provided to estimate the pore volume of a formation occupied by hydrocarbon phase or phases, the method comprising the steps of: obtaining a first pulsed NMR log of the formation, the pulse sequence of the first NMR log comprising an initial 90.degree. radio frequency pulse, followed by a series of 180.degree. radio frequency pulses starting at a time period t.sub.cp1 after the initial 90.degree. pulse, and the series of pulses comprising magnetic pulses each separated by a time period 2t.sub.cp1 ; obtaining a second pulsed NMR log of the formation, the pulse sequence of the second NMR log comprising an initial 90.degree. radio frequency pulse, followed by a series of 180.degree. pulses starting at a time period t.sub.cp2 after the initial 90.degree. pulse, and the series of 180.degree. pulses comprising radio frequency pulses each separated by a time period 2t.sub.cp2 wherein the time t.sub.cp2 is a time that is different from t.sub.
    Type: Grant
    Filed: December 18, 1997
    Date of Patent: July 25, 2000
    Assignee: Shell Oil Company
    Inventors: Harold J. Vinegar, Ridvan Akkurt, Pierre Nazareth Tutunjian