Patents by Inventor Angela M. Clark

Angela M. Clark 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).

  • Process for the recovery of a polyol from an aqueous solution
    Patent number: 6713640
    Abstract: A process for the separation of a polyol or multiple polyols in admixture with other organic compounds, usually those produced with the polyol, is described. The process uses a distillation in a column (11) of a cyclic acetal from an aqueous solution which acetal is formed in a reaction mixture of the polyol and an aldehyde or ketone. The polyols, such as ethylene glycol and propylene glycol, are staple articles of commerce with many uses.
    Type: Grant
    Filed: January 7, 2003
    Date of Patent: March 30, 2004
    Assignee: Board of Trustees of Michigan State University
    Inventors: Dennis J. Miller, James E. Jackson, Shubham P. Chopade, Atulkumar D. Dhale, Angela M. Clark, Christopher W. Kiesling
  • Process for the recovery of a polyol from an aqueous solution
    Publication number: 20030187281
    Abstract: A process for the separation of a polyol or multiple polyols in admixture with other organic compounds, usually those produced with the polyol, is described. The process uses a distillation in a column (11) of a cyclic acetal from an aqueous solution which acetal is formed in a reaction mixture of the polyol and an aldehyde or ketone. The polyols, such as ethylene glycol and propylene glycol, are staple articles of commerce with many uses.
    Type: Application
    Filed: January 7, 2003
    Publication date: October 2, 2003
    Applicant: Board of Trustees Operating Michigan State University
    Inventors: Dennis J. Miller, James E. Jackson, Shubham P. Chopade, Atulkumar D. Dhale, Angela M. Clark, Christopher W. Kiesling
  • Process for the recovery of a polyol from an aqueous solution
    Patent number: 6548681
    Abstract: A process for the separation of a polyol or multiple polyols in admixture with other organic compounds, usually those produced with the polyol, is described. The process uses a distillation in a column (11) of a cyclic acetal from an aqueous solution which acetal is formed in a reaction mixture of the polyol and an aldehyde or ketone. The polyols, such as ethylene glycol and propylene glycol, are staple articles of commerce with many uses.
    Type: Grant
    Filed: June 26, 2001
    Date of Patent: April 15, 2003
    Assignee: Board of Trustees of Michigan State University
    Inventors: Shubham P. Chopade, Atulkumar D. Dhale, Christopher W. Kiesling, Angela M. Clark, James E. Jackson, Dennis J. Miller
  • Roasting fork tines
    Patent number: D411083
    Type: Grant
    Filed: June 1, 1998
    Date of Patent: June 15, 1999
    Inventors: David D. Clark, Angela M. Clark