Patents by Inventor Charles Lee Edwards

Charles Lee Edwards 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).

  • 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
  • Method to produce aromatic dicarboxylic acids using cobalt and zirconium catalysts
    Patent number: 6153790
    Abstract: A process to produce terephthalic acid is provided, the process including the steps of: providing a feed stream comprising a dialkyl substituted aromatic and in an organic acid solvent: contacting the feed stream with an oxidant, the oxidant containing at least 50% by volume oxygen and at an oxygen partial pressure of at least 1 psia, at a temperature between about 80.degree. C. and about 130.degree. C.
    Type: Grant
    Filed: December 1, 1998
    Date of Patent: November 28, 2000
    Assignee: Shell Oil Company
    Inventors: Raymond Lawrence June, Michael Wayne Potter, Edward James Simpson, Charles Lee Edwards
  • Fuel compositions
    Patent number: 5837867
    Abstract: The present invention is directed to the use of cyclic amide alkoxylate compounds as additives in fuel compositions having a major amount of a mixture of hydrocarbons in the gasoline boiling range and a minor amount of one or more cyclic amide alkoxylate compounds of the formula: ##STR1## wherein x is from 2 to 20 and y is from 1 to 50. R.sub.1 and R.sub.2 are independently hydrogen or hydrocarbyl of 1 to 100 carbon atoms. R.sub.3 is hydrocarbyl of 1 to 100 carbon atoms and R.sub.4 is independently hydrocarbyl of 2 to 100 carbon atoms. R.sub.5 is hydrogen, hydrocarbyl of 1 to 100 carbon atoms or acyl of 1 to 20 carbon atoms.The invention is also directed to the use of these cyclic amide alkoxylate compounds for decreasing intake valve deposits, controlling octane requirement increases and reducing octane requirement. The invention is further directed to novel cyclic amide alkoxylate compounds.
    Type: Grant
    Filed: August 6, 1996
    Date of Patent: November 17, 1998
    Assignee: Shell Oil Company
    Inventors: Jiang-Jen Lin, Charles Lee Edwards, Pen-Chung Wang, Garo Garbis Vaporciyan
  • Fuel compositions containing a polyether
    Patent number: 5709718
    Abstract: The present invention is directed to the use of sulfur-containing alkoxylate compounds as additives in fuel compositions having a mixture of a major amount of hydrocarbons in the gasoline boiling range and a minor amount of one or more of these compounds. The invention is also directed to the use of these compounds for decreasing intake valve deposits.
    Type: Grant
    Filed: August 6, 1996
    Date of Patent: January 20, 1998
    Assignee: Shell Oil Company
    Inventor: Charles Lee Edwards