Patents by Inventor John H. La Rochelle

John H. La Rochelle 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).

  • Ethylene oxide process
    Patent number: 4356312
    Abstract: When supported silver materials are being prepared, deposits of from about 4.0.times.10.sup.-5 to about 8.0.times.10.sup.-3 gram equivalent weights per kilogram of finished product of ionic, higher alkali metals, i.e., ionic potassium, rubidium or cesium simultaneously with the deposit of silver improves the selectivity of these materials as catalysts for ethylene oxide production. Particularly good results are obtained with potassium.
    Type: Grant
    Filed: March 22, 1979
    Date of Patent: October 26, 1982
    Assignee: Shell Oil Company
    Inventors: Robert P. Nielsen, John H. La Rochelle
  • Ethylene oxide process
    Patent number: 4012425
    Abstract: When supported silver materials are being prepared, deposits of from about 4.0 .times. 10.sup.-.sup.5 to about 8.0 .times. 10.sup.-.sup.3 gram equivalent weights per kilogram of finished product of ionic, higher alkali metals, i.e., ionic potassium, rubidium or cesium simultaneously with the deposit of silver improves the selectivity of these materials as catalysts for ethylene oxide production. Superior results are obtained with rubidium or cesium.
    Type: Grant
    Filed: October 10, 1975
    Date of Patent: March 15, 1977
    Assignee: Shell Oil Company
    Inventors: Robert P. Nielsen, John H. La Rochelle
  • Catalyst for the oxidation of ethylene to ethylene oxide
    Patent number: 4010115
    Abstract: When supported silver materials are being prepared, deposits of from about 4.0 .times. 10.sup..sup.-5 to about 8.0 .times. 10.sup..sup.-3 gram equivalent weights per kilogram of finished product of ionic, higher alkali metals, i.e., ionic potassium, rubidium or cesium simultaneously with the deposit of silver improves the selectivity of these materials as catalysts for ethylene oxide production. Particularly good results are obtained with potassium.
    Type: Grant
    Filed: October 10, 1975
    Date of Patent: March 1, 1977
    Assignee: Shell Oil Company
    Inventors: Robert P. Nielsen, John H. La Rochelle
  • Catalyst for production of ethylene oxide
    Patent number: 3962136
    Abstract: When supported silver materials are being prepared, deposits of from about 4.0 .times. 10.sup.-.sup.5 to about 8.0 .times. 10.sup.-.sup.3 gram equivalent weights per kilogram of finished product of ionic, higher alkali metals, i.e., ionic potassium, rubidium or cesium simultaneously with the deposit of silver improves the selectivity of these materials as catalysts for ethylene oxide production. Superior results are obtained with rubidium or cesium.
    Type: Grant
    Filed: October 10, 1975
    Date of Patent: June 8, 1976
    Assignee: Shell Oil Company
    Inventors: Robert P. Nielsen, John H. La Rochelle