Patents by Inventor Stan Beisert

Stan Beisert 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).

  • BIMODAL PIPE RESIN AND PRODUCTS MADE THEREFROM
    Publication number: 20080051538
    Abstract: Disclosed is a bimodal Ziegler-Natta catalyzed polyethylene, having a density of from 0.930 g/cc to 0.960 g/cc, and a molecular weight distribution of from 10 to 25, wherein an article formed therefrom has a PENT of at least 1500. Also disclosed is a method of preparing a tubular article including obtaining a bimodal polyethylene having a density of from 0.930 g/cc to 0.960 g/cc and a molecular weight distribution of from 10 to 25, and processing the polyethylene under conditions where a specific energy input (SEI) is less than 300 kW.h/ton, and wherein the article has a PENT of at least 1500. Further disclosed is a method for controlling the degradation of polyethylene including polymerizing ethylene monomer, recovering polyethylene, extruding the polyethylene, and controlling the degradation of polyethylene by measuring the SEI to the extruder and adjusting throughput and/or gear suction pressure keep SEI less than 300 kW.h/ton, and forming an article.
    Type: Application
    Filed: July 6, 2007
    Publication date: February 28, 2008
    Applicant: FINA TECHNOLOGY, INC.
    Inventors: TIM COFFY, Steven Gray, David Knoeppel, Cyril Chevillard, David Rauscher, Carlos Corleto, Gerhard Guenther, Brian Cole, Stan Beisert, Vincent Barre, Ruby Curtis, Son Nguyen, Danielle Childress
  • Apparatus for reducing polymerization inhibitor in recycle streams
    Patent number: 5531967
    Abstract: Methods and apparatus are disclosed for removing undesirable volatile components having high boiling points from a product stream during polymerization of monovinyl aromatic compounds such as styrene, which methods include the use of heat exchangers, devolatilizers, and filter beds.
    Type: Grant
    Filed: February 11, 1991
    Date of Patent: July 2, 1996
    Assignee: Fina Technology, Inc.
    Inventors: Jose M. Sosa, Stan Beisert
  • Apparatus and processes for reducing undesirable volatiles in recycle streams of monovinyl aromatic polymerization systems
    Patent number: 5527511
    Abstract: Methods and apparatus are disclosed for removing undesirable volatile components having high boiling points from a product stream during polymerization of monovinyl aromatic compounds such as styrene, which methods include the use of heat exchangers, devolatilizers, and filter beds.
    Type: Grant
    Filed: February 11, 1991
    Date of Patent: June 18, 1996
    Assignee: Fina Technology, Inc.
    Inventors: Jose M. Sosa, Stan Beisert
  • Apparatus for injecting solid insoluble additives into polymerization streams
    Patent number: 5403556
    Abstract: Process and apparatus are disclosed for improved additive systems for polymerization processes, which improved systems comprise a slurry additive system having a high shear mixer for mixing a carrier fluid and the solid additives and maintaining them in a suspension slurry prior to injecting them into a polymerization system.
    Type: Grant
    Filed: November 30, 1990
    Date of Patent: April 4, 1995
    Assignee: Fina Technology, Inc.
    Inventors: Jose M. Sosa, Stan Beisert
  • Reduction of undesirable volatiles in recycle streams using partial condensation in the reactor vaporization line
    Patent number: 5200476
    Abstract: Methods and apparatus are disclosed for removing undesirable volatile components having high boiling points from a product stream during polymerization of monovinyl aromatic compounds such as styrene, which methods include the use of partial condensers, devolatilizers, and filter beds.
    Type: Grant
    Filed: February 8, 1991
    Date of Patent: April 6, 1993
    Assignee: Fina Technology, Inc.
    Inventors: Jose M. Sosa, Stan Beisert