Patents by Inventor Luciano Michielin

Luciano Michielin 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 for feeding a catalyst in a polymerization reactor
    Patent number: 8178050
    Abstract: A process for introducing a catalyst powder into a polymerization reactor comprising: a) metering the catalyst powder by means of a rotary valve comprising a stator, a rotor and sealing means arranged between said stator and said rotor; b) transferring a metered amount of catalyst powder from said rotary valve to a polymerization reactor; the process further comprising the steps of: c) feeding a flushing compound in one or more internal conduits arranged in the rotor of said rotary valve; d) flushing the catalyst powder away from said sealing means.
    Type: Grant
    Filed: May 22, 2008
    Date of Patent: May 15, 2012
    Assignee: Basell Polyolefine GmbH
    Inventors: Luciano Michielin, Olga Pizzutti, legal representative, Pier Luigi Di Federico, Luciano Di Nardo
  • PROCESS FOR FEEDING A CATALYST IN A POLYMERIZATION REACTOR
    Publication number: 20100247250
    Abstract: A process for introducing a catalyst powder into a polymerization reactor comprising: a) metering the catalyst powder by means of a rotary valve comprising a stator, a rotor and sealing means arranged between said stator and said rotor; b) transferring a metered amount of catalyst powder from said rotary valve to a polymerization reactor; the process further comprising the steps of: c) feeding a flushing compound in one or more internal conduits arranged in the rotor of said rotary valve; d) flushing the catalyst powder away from said sealing means.
    Type: Application
    Filed: May 22, 2008
    Publication date: September 30, 2010
    Applicant: Basell Polyolefine GmbH
    Inventors: Luciano Michielin, Pizzutti Olga, Pier Luigi Di Federico, Luciano Di Nardo
  • Method of discharging a polymer from a polymerization reactor
    Patent number: 7763685
    Abstract: A method of discharging polymer from a continuously operated polymerization reactor, wherein at least a monomer is polymerized to form polymer particles, the method comprising adjusting the discharge rate of the polymer particles by means of a piston valve having a piston element connected to an actuator, said actuator being able to modulate the piston stroke inside said piston valve.
    Type: Grant
    Filed: July 4, 2005
    Date of Patent: July 27, 2010
    Assignee: Basell Poliolefine Italia s.r.l.
    Inventors: Luciano Michielin, Maurizio Dorini, Giuseppe Penzo, Riccardo Rinaldi
  • Post-treatment for polymer pellets
    Patent number: 7732551
    Abstract: A continuous process for minimizing the agglomeration of freshly manufactured polyolefin pellets comprising the steps of: feeding an aqueous stream containing polyolefin pellets to a tower, cooling said polyolefin pellets during their upward flow along said tower by means of a downward flow of a cooling agent having a density higher than said polyolefin, collecting the cooled pellets from the top of said tower after a residence time in the tower comprised between 2 and 20 minutes.
    Type: Grant
    Filed: May 27, 2004
    Date of Patent: June 8, 2010
    Assignee: Basell Poliolefine Italia s.r.l.
    Inventors: Pier Luigi Di Federico, Carlo Ciccarone, Luciano Michielin, Giuseppe Penzo
  • Method of Discharging a Polymer from a Polymerization Reactor
    Publication number: 20070213481
    Abstract: A method of discharging polymer from a continuously operated polymerization reactor, wherein at least a monomer is polymerized to form polymer particles, the method comprising adjusting the discharge rate of the polymer particles by means of a piston valve having a piston element connected to an actuator, said actuator being able to modulate the piston stroke inside said piston valve.
    Type: Application
    Filed: July 4, 2005
    Publication date: September 13, 2007
    Applicant: Basell Poliolefine Italia s.r.l
    Inventors: Luciano Michielin, Maurizio Dorini, Giuseppe Penzo, Riccardo Rinaldi
  • Post-treatment for polymer pellets
    Publication number: 20060279019
    Abstract: A continuous process for minimizing the agglomeration of freshly manufactured polyolefin pellets comprising the steps of: feeding an aqueous stream containing polyolefin pellets to a tower, cooling said polyolefin pellets during their upward flow along said tower by means of a downward flow of a cooling agent having a density higher than said polyolefin, collecting the cooled pellets from the top of said tower after a residence time in the tower comprised between 2 and 20 minutes.
    Type: Application
    Filed: May 27, 2004
    Publication date: December 14, 2006
    Applicant: Basell Poliolefine Italia s.r.l.
    Inventors: Pier Luigi Di Federico, Carlo Ciccarone, Luciano Michielin, Giuseppe Penzo