Patents by Inventor John E. Sundberg

John E. Sundberg 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: 7479168
    Abstract: The present invention relates to a stable blended diesel fuel comprising an olefinic diesel fuel blending stock. The olefinic diesel fuel blending stock of the invention comprises olefins in an amount of 2 to 80 weight percent, non-olefins in an amount of 20 to 98 weight percent wherein the non-olefins are substantially comprised of paraffins, oxygenates in an amount of at least 0.012 weight percent and sulfur in an amount of less than 1 ppm. To provide acceptable stability, the blended diesel fuel comprising the olefinic diesel fuel blending stock comprises a sulfur-free antioxidant. The blended diesel fuel comprising the olefinic diesel fuel blending stock and sulfur-free antioxidant added has a peroxide content of less than 5 ppm when stored at 60° C. for 4 weeks. The present invention also relates to processes for making the stable blended diesel fuel and olefinic diesel fuel blending stocks as defined above.
    Type: Grant
    Filed: January 31, 2003
    Date of Patent: January 20, 2009
    Assignee: Chevron U.S.A. Inc.
    Inventors: Dennis J. O'Rear, John E. Sundberg
  • Patent number: 7179311
    Abstract: The present invention relates to a stable blended diesel fuel comprising an olefinic diesel fuel blending stock. The olefinic diesel fuel blending stock of the invention comprises olefins in an amount of 2 to 80 weight percent, non-olefins in an amount of 20 to 98 weight percent wherein the non-olefins are substantially comprised of paraffins, oxygenates in an amount of at least 0.012 weight percent and sulfur in an amount of less than 1 ppm. To provide acceptable stability, the blended diesel fuel comprising the olefinic diesel fuel blending stock comprises a sulfur-free antioxidant. The blended diesel fuel comprising the olefinic diesel fuel blending stock and sulfur-free antioxidant added has a peroxide content of less than 5 ppm when stored at 60° C. for 4 weeks. The present invention also relates to processes for making the stable blended diesel fuel and olefinic diesel fuel blending stocks as defined above.
    Type: Grant
    Filed: January 31, 2003
    Date of Patent: February 20, 2007
    Assignee: Chevron U.S.A. Inc.
    Inventors: Dennis J. O'Rear, John E. Sundberg
  • Publication number: 20040148850
    Abstract: The present invention relates to a stable blended diesel fuel comprising an olefinic diesel fuel blending stock. The olefinic diesel fuel blending stock of the invention comprises olefins in an amount of 2 to 80 weight percent, non-olefins in an amount of 20 to 98 weight percent wherein the non-olefins are substantially comprised of paraffins, oxygenates in an amount of at least 0.012 weight percent and sulfur in an amount of less than 1 ppm. To provide acceptable stability, the blended diesel fuel comprising the olefinic diesel fuel blending stock comprises a sulfur-free antioxidant. The blended diesel fuel comprising the olefinic diesel fuel blending stock and sulfur-free antioxidant added has a peroxide content of less than 5 ppm when stored at 60° C. for 4 weeks. The present invention also relates to processes for making the stable blended diesel fuel and olefinic diesel fuel blending stocks as defined above.
    Type: Application
    Filed: January 31, 2003
    Publication date: August 5, 2004
    Inventors: Dennis J. O'Rear, John E. Sundberg
  • Publication number: 20040152930
    Abstract: The present invention relates to a stable blended diesel fuel comprising an olefinic diesel fuel blending stock. The olefinic diesel fuel blending stock of the invention comprises olefins in an amount of 2 to 80 weight percent, non-olefins in an amount of 20 to 98 weight percent wherein the non-olefins are substantially comprised of paraffins, oxygenates in an amount of at least 0.012 weight percent and sulfur in an amount of less than 1 ppm. To provide acceptable stability, the blended diesel fuel comprising the olefinic diesel fuel blending stock comprises a sulfur-free antioxidant. The blended diesel fuel comprising the olefinic diesel fuel blending stock and sulfur-free antioxidant added has a peroxide content of less than 5 ppm when stored at 60° C. for 4 weeks. The present invention also relates to processes for making the stable blended diesel fuel and olefinic diesel fuel blending stocks as defined above.
    Type: Application
    Filed: January 31, 2003
    Publication date: August 5, 2004
    Inventors: Dennis J. O'Rear, John E. Sundberg
  • Patent number: 4254055
    Abstract: Tetrasodium pentaerythrityl tetrakis (dithiocarbamate) has been found to be an unusually stable lead precipitant which can be incorporated in coatings to be applied over lead painted surfaces to detoxify the same. The preparation of TSPTD from carbon disulfide sodium hydroxide and pentaerythrityl tetramine by simple mixing thereof does not produce satisfactory yields because of undesirable side reactions. The TSPTD can be produced in high yields by the gradual addition of sodium hydroxide to a mixture of pentaerythrityl tetramine in an excess of carbon disulfide.
    Type: Grant
    Filed: June 6, 1977
    Date of Patent: March 3, 1981
    Assignee: United Technologies Corporation
    Inventors: Harry J. Hyer, John E. Sundberg