Patents by Inventor Charles Louis Kern, Jr.

Charles Louis Kern, Jr. 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 to prepare a polyester resin
    Patent number: 6113997
    Abstract: A process is disclosed to prepare a polyester resin having a predetermined acetaldehyde (AA) content whereby the IV of the melt phase resin is constrained to a certain range resulting in a longer SSP time to achieve a higher level of IV for the resin with an AA content of 1 PPM or less. The resultant resin can be transformed into a bottle preform, which, when blown, forms a bottle suitable for packaging of mineral water.
    Type: Grant
    Filed: May 21, 1999
    Date of Patent: September 5, 2000
    Assignee: Shell Oil Company
    Inventors: Freddie Lee Massey, Deborah Ann Snell Tung, Millicent Louise Martin-Shultz, Ben Duh, Charles Louis Kern, Jr.