Patents Assigned to Yield Improvement Engineering, Inc.
  • Distillation of vinylaromatic monomer
    Patent number: 5954924
    Abstract: Process technology is described making possible substantial improvements in the separation and recovery of highly pure vinyl aromatic monomers, notably styrene. A number of design, construction and operational features are made available for selection and use both for new plant facilities and for upgrading existing plant facilities. One major aspect of the invention is reduction in retention or residence times in the distillation towers.
    Type: Grant
    Filed: September 29, 1995
    Date of Patent: September 21, 1999
    Assignee: Yield Improvement Engineering, Inc.
    Inventor: Billie E. Art