Patents by Inventor Darrell James Long

Darrell James Long 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).

  • Preventing upsets in polymerization reactors
    Patent number: 6365681
    Abstract: In a polymerization reaction, an upset is anticipated and inhibited by monitoring at least one reaction condition and comparing it to the desired value or normal range for the condition as projected by a computer model for the variable or variables of the process. In a preferred variation, the process not only continuously adjusts the set point or range for an upset-significant variable such as temperature, but also utilizes the rate of change of such a variable as a harbinger of an upset.
    Type: Grant
    Filed: January 16, 2001
    Date of Patent: April 2, 2002
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: Ivan Jeremy Hartley, John Roberts Parrish, Paul Kevin Samples, Darrell James Long