Patents by Inventor Virginia R. Cross

Virginia R. Cross 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: 5552035
    Abstract: A process for producing zeolite aggregates involves providing a formable paste composed of zeolite, a binder composed of an organic/metal oxide containing aluminum, a peptizing agent and water; forming the paste into an aggregate, preferably by extruding into an extrudate; curing the aggregate; hydro-thermally calcining the aggregate; and washing the hydro-thermally calcined aggregate with a washing medium, preferably followed by rinsing with a rinsing medium to remove residual washing medium from the aggregate. The washed and rinsed aggregate may then be permitted to equilibrate or is subjected to a drying procedure. Preferably, the washed and rinsed aggregate is again subjected to curing/hydro-thermal calcining.
    Type: Grant
    Filed: July 6, 1994
    Date of Patent: September 3, 1996
    Assignee: Exxon Research and Engineering Company
    Inventors: Mark J. Potter, Jar-Lin Kao, Virginia R. Cross, Thomas H. Vanderspurt, Edward K. Dienes, Robert E. Riley, Freddie L. Tungate, Arie Bortinger
  • Patent number: 5548014
    Abstract: Disclosed are hot melt adhesives comprising tackifier and a high M.sub.w, narrow MWD, narrow CD ethylene/alpha-olefin copolymer(s) and a low M.sub.w, narrow MWD, narrow MWD ethylene/alpha-olefin copolymer prepared with either supported or unsupported cyclopentadienyl derivatives of Group IV and catalysts for applications in hot melt adhesives, particularly in automotive product assembly, packaging and food packaging. These ethylene copolymers have a M.sub.w ranging from about 20,000 to about 100,000, an MWD of less than 6 and 3 to 17 mole percent comonomer, and composition distribution breadth index above 70 percent. These ethylene copolymer blends have a M.sub.w ranging from about 20,000 to about 100,000 and an MWD of less than 6. In addition, the copolymer blends have comonomer mole percent ranging from about 3 to about 17.
    Type: Grant
    Filed: March 20, 1995
    Date of Patent: August 20, 1996
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Mun F. Tse, Virginia R. Cross, Barry C. Trudell
  • Patent number: 5348924
    Abstract: A process for producing zeolite aggregates involves providing a formable paste composed of zeolite, a binder composed of an organic/metal oxide containing aluminum, a peptizing agent and water; forming the paste into an aggregate, preferably by extruding into an extrudate; curing the aggregate; hydro-thermally calcining the aggregate; and washing the hydro-thermally calcined aggregate with a washing medium, preferably followed by rinsing with a rinsing medium to remove residual washing medium from the aggregate. The washed and rinsed aggregate may then be permitted to equilibrate or is subjected to a drying procedure. Preferably, the washed and rinsed aggregate is again subjected to curing/hydro-thermal calcining.
    Type: Grant
    Filed: February 23, 1993
    Date of Patent: September 20, 1994
    Assignee: Exxon Research & Engineering Co.
    Inventors: Mark J. Potter, Jar-Lin Kao, Virginia R. Cross, Thomas H. Vanderspurt, Edward K. Dienes, Robert E. Riley, Freddie L. Tungate, Arie Bortinger
  • Patent number: 5110685
    Abstract: The invention relates to certain low friction abrasion resistant polymer coatings. The polymer coatings consist of thermoplastic materials based on blends of elastomers with high density polyethylene comprising a high molecular weight component. The appropriate balance of crystallinity, durability and flexibility can be achieved by selecting the proper amount of low, medium and high molecular weight high density polyethylene. The coating is particularly useful for weatherstripping material for automobile window channels.
    Type: Grant
    Filed: May 18, 1990
    Date of Patent: May 5, 1992
    Assignee: Exxon Chemical Patents, Inc.
    Inventors: Virginia R. Cross, Cindy B. Shulman
  • Patent number: 4914068
    Abstract: This invention relates to methods for dispersing Group-VIII and other metals containing zeolites, particularly large pore zeolites.
    Type: Grant
    Filed: March 21, 1988
    Date of Patent: April 3, 1990
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Virginia R. Cross, Jar L. Kao, Thomas H. Vanderspurt, Murray Nadler, Theodorus M. Wortel
  • Patent number: 4648960
    Abstract: A class of bound catalysts which exhibit superior activity maintenance in dehydrocyclization reactions are defined as a type L zeolite having exchangeable cations of which at least 75% are selected from Group IA and calcium and barium cations and containing well dispersed particles of at least one Group VIII noble metal where at least 90% of the noble metal thereof is dispersed in the form of particles having a diameter less than 7 .ANG.. The catalysts may also be identified as type L zeolites loaded with at least one Group VIII noble metal which have a terminal cracking index (as a measure of production of pentanes versus butanes from hexane) of at least 1.5.
    Type: Grant
    Filed: March 10, 1986
    Date of Patent: March 10, 1987
    Assignee: Exxon Research and Engineering Company
    Inventors: Kenneth R. Poeppelmeier, Walter G. Funk, John J. Steger, Shun C. Fung, Virginia R. Cross, Jar-Lin Kao
  • Patent number: 4634517
    Abstract: A class of catalysts which exhibit superior activity maintenance in dehydrocyclization reactions are defined as a type L zeolite having exchangeable cations of which at least 75% are selected from Group IA and calcium and barium cations and containing well dispersed particles of at least one Group VIII noble metal where at least 90% of the noble metal prior to reduction thereof is dispersed in the form of particles having a diameter less than 7 .ANG.. The catalysts may also be identified as type L zeolites loaded with at least one Group VIII noble metal which have a terminal cracking index (as a measure of production of pentanes versus butanes from hexane) of at least 1.5.
    Type: Grant
    Filed: March 10, 1986
    Date of Patent: January 6, 1987
    Assignee: Exxon Research and Engineering Company
    Inventors: Samuel J. Tauster, Angelo A. Montagna, John J. Steger, Shun C. Fung, Virginia R. Cross
  • Patent number: 4595668
    Abstract: A class of bound catalysts which exhibit superior activity maintenance in dehydrocyclization reactions are defined as a type L zeolite having exchangeable cations of which at least 75% are selected from Group IA and calcium and barium cations and containing well dispersed particles of at least one Group VIII noble metal where at least 90% of the noble metal thereof is dispersed in the form of particles having a diameter less than 7 .ANG.. The catalysts may also be identified as type L zeolites loaded with at least one Group VIII noble metal which have a terminal cracking index (as a measure of production of pentanes versus butanes from hexane) of at least 1.5.
    Type: Grant
    Filed: November 10, 1983
    Date of Patent: June 17, 1986
    Assignee: Exxon Research and Engineering Co.
    Inventors: Kenneth R. Poeppelmeier, Walter G. Funk, John J. Steger, Shun C. Fung, Virginia R. Cross, Jar-Lin Kao
  • Patent number: 4595670
    Abstract: A class of catalysts which exhibit superior activity maintenance in dehydrocyclization reactions are defined as a type L zeolite having exchangeable cations of which at least 75% are selected from Group IA and calcium and barium cations and containing well dispersed particles of at least one Group VIII noble metal where at least 90% of the noble metal prior to reduction thereof is dispersed in the form of particles having a diameter less than 7 .ANG.. The catalysts may also be identified as type L zeolites loaded with at least one Group VIII noble metal which have a terminal cracking index (as a measure of production of pentanes versus butanes from hexane) of at least 1.5.
    Type: Grant
    Filed: November 10, 1983
    Date of Patent: June 17, 1986
    Assignee: Exxon Research and Engineering Co.
    Inventors: Samuel J. Tauster, Angelo A. Montagna, John J. Steger, Shun C. Fung, Virginia R. Cross
  • Patent number: 4310600
    Abstract: The present invention is directed to a clear, flexible, coated, biaxially oriented polyester film comprising a polyester film support and a radiation curable silicone coating on at least a portion of the support. The radiation curable silicone coating is derived from a dispersion of colloidal silica in an alcohol-water solution of the partial condensate of specified silanols and multifunctional acrylate monomers and oligomers with optional photoinitiators.
    Type: Grant
    Filed: August 29, 1980
    Date of Patent: January 12, 1982
    Assignee: American Hoechst Corp.
    Inventor: Virginia R. Cross