Patents by Inventor Robert T. Roginski

Robert T. Roginski 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).

  • Tagging hydrocarbons for subsequent identification
    Patent number: 5928954
    Abstract: Method for tagging hydrocarbons and for detecting the presence of tagged hydrocarbons in a hydrocarbon mixture. The method can be utilized to tag gasoline, diesel fuel, heating oil, lubricating oil or crude petroleum. The hydrocarbon to be tagged is blended with a relatively small amount of a fluorescent dye. The presence of the tagged hydrocarbon is subsequently determined by exciting the dye to fluoresce at wavelengths in the higher portion of the visible spectral region or the lower portion of the near infrared spectral region.
    Type: Grant
    Filed: October 7, 1998
    Date of Patent: July 27, 1999
    Assignee: BP Amoco Corporation
    Inventors: Michael J. Rutledge, Robert T. Roginski, George H. Vickers
  • Tagging hydrocarbons for subsequent identification
    Patent number: 5843783
    Abstract: A method for tagging hydrocarbons and for detecting the presence of tagged hydrocarbons in a hydrocarbon mixture. The method can be utilized to tag gasoline, diesel fuel, heating oil, lubricating oil or crude petroleum. The hydrocarbon to be tagged is blended with a relatively small amount of a fluorescent dye. The presence of the tagged hydrocarbon is subsequently determined by exciting the dye to fluoresce at wavelengths in the higher portion of the visible spectral region or the lower portion of the rear infrared spectral region.
    Type: Grant
    Filed: December 18, 1997
    Date of Patent: December 1, 1998
    Assignee: Amoco Corporation
    Inventors: Michael J. Rutledge, Robert T. Roginski, George H. Vickers
  • Tagging hydrocarbons for subsequent identification
    Patent number: 5723338
    Abstract: A method for tagging hydrocarbons and for detecting the presence of tagged hydrocarbons in a hydrocarbon mixture. The method can be utilized to tag gasoline, diesel fuel, heating oil, lubricating oil or crude petroleum. The hydrocarbon to be tagged is blended with a relatively small amount of a fluorescent dye. The presence of the tagged hydrocarbon is subsequently determined by exciting the dye to fluoresce at wavelengths in the higher portion of the visible spectral region or the lower portion of the near infrared spectral region.
    Type: Grant
    Filed: January 29, 1996
    Date of Patent: March 3, 1998
    Assignee: Amoco Corporation
    Inventors: Michael J. Rutledge, Robert T. Roginski, George H. Vickers
  • Tagging hydrocarbons for subsequent identification
    Patent number: 5710046
    Abstract: A method for tagging hydrocarbons and for detecting the presence of tagged hydrocarbons in a hydrocarbon mixture. The method can be utilized to tag gasoline, diesel fuel, heating oil, lubricating oil or crude petroleum. The hydrocarbon to be tagged is blended with a relatively small amount of a fluorescent dye. The presence of the tagged hydrocarbon is subsequently determined by exciting the dye to fluoresce at wavelengths in the higher portion of the visible spectral region or the lower portion of the near infrared spectral region.
    Type: Grant
    Filed: November 4, 1994
    Date of Patent: January 20, 1998
    Assignee: Amoco Corporation
    Inventors: Michael J. Rutledge, Robert T. Roginski, George H. Vickers
  • Process for making thick multilayers of polyimide
    Patent number: 5137751
    Abstract: A polyimide layer having a thickness greater than about 5 microns is formed on a substrate by coating a substrate with a solution of polymer and a solvent of the formula ##STR1## wherein R.sub.1 and R.sub.2 are independently a hydrogen, a C.sub.1 to C.sub.6 alkyl moiety, or a ##STR2## R.sub.5 is a C.sub.1 to C.sub.6 alkyl moiety; and R.sub.3 and R.sub.4 are independently hydrogen or a C.sub.1 to C.sub.6 alkyl moiety, and curing the resulting coated substrate.
    Type: Grant
    Filed: November 13, 1990
    Date of Patent: August 11, 1992
    Assignee: Amoco Corporation
    Inventors: Marvin J. Burgess, Douglas E. Fjare, Herbert J. Neuhaus, Robert T. Roginski, David A. Wargowski