Patents by Inventor Ernestine Williams Hill

Ernestine Williams Hill 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: 6730757
    Abstract: The inventions disclosed herein are catalyst systems comprising a complex having one of the formulas LMX1X2 and LML′ and an activating cocatalyst, and use of the catalyst system in polymerizing olefinic monomers. In either of the foregoing formulas, L is a chelating ligand containing sulfur donors; M is a transition metal selected from either copper, silver, gold, manganese, iron, cobalt, palladium or nickel; X1 and X2 are independently selected from either halides, hydride, triflate, acetate, borate, alkyl, alkoxyl, cycloalkyl, cycloalkoxyl, aryl, thiolate, carbon monoxide, cyanate or olefins; and L′ is a bidentate ligand selected from either dithiolene, dithiolate, diphosphine, bisimine, bispyridine, phenanthroline, oxolate, catecholate, thiolatoamide, thiolatoimine or thiolatophosphine.
    Type: Grant
    Filed: March 8, 2002
    Date of Patent: May 4, 2004
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Kun Wang, Abhimanyu Onkar Patil, Stephen Zushma, Ernestine Williams Hill, Edward Ira Stiefel
  • Publication number: 20030171209
    Abstract: The inventions disclosed herein are catalyst systems comprising a complex having one of the formulas LMX1X2 and LML′ and an activating cocatalyst, and use of the catalyst system in polymerizing olefinic monomers. In either of the foregoing formulas, L is a chelating ligand containing sulfur donors; M is a transition metal selected from either copper, silver, gold, manganese, iron, cobalt, palladium or nickel; X1 and X2 are independently selected from either halides, hydride, triflate, acetate, borate, alkyl, alkoxyl, cycloalkyl, cycloalkoxyl, aryl, thiolate, carbon monoxide, cyanate or olefins; and L′ is a bidentate ligand selected from either dithiolene, dithiolate, diphosphine, bisimine, bispyridine, phenanthroline, oxolate, catecholate, thiolatoamide, thiolatoimine or thiolatophosphine.
    Type: Application
    Filed: March 8, 2002
    Publication date: September 11, 2003
    Inventors: Kun Wang, Abhimanyu Onkar Patil, Stephen Zushma, Ernestine Williams Hill, Edward Ira Stiefel
  • Patent number: 5952421
    Abstract: The present invention provides for microporous ceramic materials having a surface area in excess of 70 m.sup.2 /gm and an open microporous cell structure wherein the micropores have a mean width of less than 20 Angstroms and wherein said microporous structure comprises a volume of greater than about 0.03 cm.sup.3 /gm of the ceramic. The invention also provides for a preceramic composite intermediate composition comprising a mixture of a ceramic precursor and nanoscale size metallic particles, whose pyrolysis product in inert atmosphere or in an ammonia atmosphere at temperatures of up to less than about 1100.degree. C. gives rise to the microporous ceramics of the invention. Also provided is a process for the preparation of the microporous ceramics of the invention involving pyrolysis of the composite intermediate under controlled conditions of heating up to temperatures of less than about 1100.degree. C. to form a microporous ceramic product.
    Type: Grant
    Filed: December 27, 1995
    Date of Patent: September 14, 1999
    Assignee: Exxon Research and Engineering Co.
    Inventors: John Stewart Bradley, Ernestine Williams Hill, John P. Dismukes, Paul James Tindall