Patents by Inventor Ronald L. Savage

Ronald L. Savage 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).

  • Purification of alkylene carbonates
    Patent number: 6476237
    Abstract: Provided herein is a process for producing alkylene carbonates of ultra-high purity. According to the present invention, certain stages of traditional distillation of alkylene carbonate distillation are replaced by carbon treatment. Alkylene carbonates produced according to the invention have a color of less than 25 (Pt-Co), and are suitable for uses requiring ultra-pure alkylene carbonates.
    Type: Grant
    Filed: February 26, 2002
    Date of Patent: November 5, 2002
    Assignee: Huntsman Petrochemical Corporation
    Inventors: James R. Machac, Jr., Ralph M. DiGuilio, John R. Sanderson, Ronald L. Savage
  • PROCESS FOR THE PURIFICATION OF ALKYLENE CARBONATE
    Publication number: 20020147349
    Abstract: This invention concerns a process to provide high purity alkylene carbonate though use of multiple distillations wherein the unused fractions are recycled to the reactor. The high purity alkylene carbonate may be further purified by use of carbon to produce electrochromic or photochromic grade alkylene carbonate by reducing its UV absorbance.
    Type: Application
    Filed: March 29, 2002
    Publication date: October 10, 2002
    Applicant: Huntsman Petrochemical Corporation
    Inventors: James R. Machac, Edward T. Marquis, Ronald L. Savage, Susan A. Woodrum, John R. Sanderson
  • Process for the purification of alkylene carbonate
    Patent number: 6458969
    Abstract: This invention concerns a process to provide high purity alkylene carbonate though use of multiple distillations wherein the unused fractions are recycled to the reactor. The high purity alkylene carbonate may be further purified by use of carbon to produce electrochromic or photochromic grade alkylene carbonate by reducing its UV absorbance.
    Type: Grant
    Filed: March 29, 2002
    Date of Patent: October 1, 2002
    Assignee: Huntsman Petrochemical Corporation
    Inventors: James R. Machac, Jr., Edward T. Marquis, Ronald L. Savage, Susan A. Woodrum, John R. Sanderson
  • Purification of alkylene carbonates
    Publication number: 20020082430
    Abstract: Provided herein is a process for producing alkylene carbonates of ultra-high purity. According to the present invention, certain stages of traditional distillation of alkylene carbonate distillation are replaced by carbon treatment. Alkylene carbonates produced according to the invention have a color of less than 25 (Pt—Co), and are suitable for uses requiring ultra-pure alkylene carbonates.
    Type: Application
    Filed: February 26, 2002
    Publication date: June 27, 2002
    Applicant: Huntsman Petrochemical Corporation
    Inventors: James R. Machac, Ralph M. DiGuilio, John R. Sanderson, Ronald L. Savage
  • Process for the purification of alkylene carbonate
    Patent number: 6384240
    Abstract: This invention concerns a process to provide high purity alkylene carbonate though use of multiple distillations wherein the unused fractions are recycled to the reactor. The high purity alkylene carbonate may be further purified by use of carbon to produce electrochromic or photochromic grade alkylene carbonate by reducing its UV absorbance.
    Type: Grant
    Filed: March 9, 2000
    Date of Patent: May 7, 2002
    Assignee: Huntsman Petrochemical Corporation
    Inventors: James R. Machac, Jr., Edward T. Marquis, Ronald L. Savage, Susan A. Woodrum, John R. Sanderson