Patents by Inventor Francis Glenn Gallagher

Francis Glenn Gallagher 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).

  • Hydrogenation of polytrimethylene ether glycol
    Patent number: 7342142
    Abstract: A process comprising contacting PO3G having color with hydrogen in the presence of a hydrogenation catalyst, wherein the PO3G, after hydrogenation, has a APHA color of less than about 50.
    Type: Grant
    Filed: August 5, 2003
    Date of Patent: March 11, 2008
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Hari Babu Sunkara, Mayis Seapan, George Francis Diffendall, Francis Glenn Gallagher
  • Monomer recovery process for contaminated polymers
    Patent number: 5710315
    Abstract: An improved process for recovering depolymerization products from polymers such as polyesters, polyamides, and polyesteramides, especially when the starting polymer content is less than about 98%. The depolymerization and vapor phase recovery of monomers and other reaction products are conducted in the presence of a solid support.
    Type: Grant
    Filed: June 24, 1996
    Date of Patent: January 20, 1998
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Francis Glenn Gallagher