Patents by Inventor Donald A. Stern

Donald A. Stern 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).

  • Patent number: 9505675
    Abstract: Processes of forming oligomers are described herein. The processes generally include contacting an olefin and a catalyst system to form an oligomerization product at oligomerization conditions, wherein a reaction system effluent includes components selected from the oligomerization product, a chromium containing compound, or combinations thereof; and contacting the chromium containing compound with a beta-diketone at conditions capable of changing an oxidation state of chromium.
    Type: Grant
    Filed: February 9, 2015
    Date of Patent: November 29, 2016
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Orson L Sydora, Bruce E Kreischer, Donald A Stern, Varadee Vittur
  • Publication number: 20160229766
    Abstract: Processes of forming oligomers are described herein. The processes generally include contacting an olefin and a catalyst system to form an oligomerization product at oligomerization conditions, wherein a reaction system effluent includes components selected from the oligomerization product, a chromium containing compound and combinations thereof; and contacting the chromium containing compound with a beta-diketone at conditions capable of changing an oxidation state of chromium.
    Type: Application
    Filed: February 9, 2015
    Publication date: August 11, 2016
    Applicant: Chevron Phillips Chemical Company LP
    Inventors: Orson L. Sydora, Bruce E. Kreischer, Donald A. Stern, Varadee Vittur
  • Patent number: 8163856
    Abstract: In an embodiment, a method is disclosed to increase the activity of an ionic liquid catalyst comprising emulsifying the ionic liquid catalyst with one or more liquid components. In an embodiment, a method is disclosed comprising introducing into a reaction zone a monomer feed and a reduced amount of ionic liquid catalyst and controlling an amount of shear present in the reaction zone to maintain a desired conversion reaction of the monomer. In an embodiment, a catalyzed reaction system is disclosed comprising a reactor configured to receive one or more liquid components and ionic liquid catalyst; a device coupled to the reactor for adding high shear to the liquid components and ionic liquid catalyst; and a controller coupled to the device for adding high shear and configured to control the amount of shear added to a catalyzed reaction zone to maintain a conversion reaction.
    Type: Grant
    Filed: April 25, 2011
    Date of Patent: April 24, 2012
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Lee H. Bergman, Kenneth D. Hope, Elizabeth A. Benham, Donald A. Stern
  • Publication number: 20110201766
    Abstract: In an embodiment, a method is disclosed to increase the activity of an ionic liquid catalyst comprising emulsifying the ionic liquid catalyst with one or more liquid components. In an embodiment, a method is disclosed comprising introducing into a reaction zone a monomer feed and a reduced amount of ionic liquid catalyst and controlling an amount of shear present in the reaction zone to maintain a desired conversion reaction of the monomer. In an embodiment, a catalyzed reaction system is disclosed comprising a reactor configured to receive one or more liquid components and ionic liquid catalyst; a device coupled to the reactor for adding high shear to the liquid components and ionic liquid catalyst; and a controller coupled to the device for adding high shear and configured to control the amount of shear added to a catalyzed reaction zone to maintain a conversion reaction.
    Type: Application
    Filed: April 25, 2011
    Publication date: August 18, 2011
    Applicant: CHEVRON PHILLIPS CHEMICAL COMPANY LP
    Inventors: Lee H. BERGMAN, Kenneth D. HOPE, Elizabeth A. BENHAM, Donald A. STERN
  • Patent number: 7951889
    Abstract: In an embodiment, a method is disclosed to increase the activity of an ionic liquid catalyst comprising emulsifying the ionic liquid catalyst with one or more liquid components. In an embodiment, a method is disclosed comprising introducing into a reaction zone a monomer feed and a reduced amount of ionic liquid catalyst and controlling an amount of shear present in the reaction zone to maintain a desired conversion reaction of the monomer. In an embodiment, a catalyzed reaction system is disclosed comprising a reactor configured to receive one or more liquid components and ionic liquid catalyst; a device coupled to the reactor for adding high shear to the liquid components and ionic liquid catalyst; and a controller coupled to the device for adding high shear and configured to control the amount of shear added to a catalyzed reaction zone to maintain a conversion reaction.
    Type: Grant
    Filed: November 1, 2004
    Date of Patent: May 31, 2011
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Lee H. Bergman, Kenneth D. Hope, Elizabeth A. Benham, Donald A. Stern
  • Patent number: 7615598
    Abstract: A method of continuously manufacturing a high viscosity polyalphaolefin product by introducing a monomer and an ionic liquid catalyst together into a reaction zone while simultaneously withdrawing from the reaction zone a reaction zone effluent that contains the high viscosity polyalphaolefin. The reaction zone is operated under reaction conditions suitable for producing the high viscosity polyalphaolefin product. The preferred high viscosity polyalphaolefin has a kinematic viscosity exceeding about 8 cSt and is the reaction product of the trimerization, oligomerization, or polymerization of an alpha olefin or a mixture of one or more product thereof. The high viscosity polyalphaolefins are useful as lubricants or lubricant additives.
    Type: Grant
    Filed: March 14, 2008
    Date of Patent: November 10, 2009
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Kenneth D. Hope, Donald A. Stern, Donald W. Twomey, J. Barry Collins
  • Publication number: 20080161623
    Abstract: A method of continuously manufacturing a high viscosity polyalphaolefin product by introducing a monomer and an ionic liquid catalyst together into a reaction zone while simultaneously withdrawing from the reaction zone a reaction zone effluent that contains the high viscosity polyalphaolefin. The reaction zone is operated under reaction conditions suitable for producing the high viscosity polyalphaolefin product. The preferred high viscosity polyalphaolefin has a kinematic viscosity exceeding about 8 cSt and is the reaction product of the trimerization, oligomerization, or polymerization of an alpha olefin or a mixture of one or more product thereof. The high viscosity polyalphaolefins are useful as lubricants or lubricant additives.
    Type: Application
    Filed: March 14, 2008
    Publication date: July 3, 2008
    Applicant: CHEVRON PHILLIPS CHEMICAL COMPANY LP
    Inventors: Kenneth D. Hope, Donald A. Stern, Donald W. Twomey, J. Barry Collins
  • Patent number: 7351780
    Abstract: A method of continuously manufacturing a high viscosity polyalphaolefin product by introducing a monomer and an ionic liquid catalyst together into a reaction zone while simultaneously withdrawing from the reaction zone a reaction zone effluent that contains the high viscosity polyalphaolefin. The reaction zone is operated under reaction conditions suitable for producing the high viscosity polyalphaolefin product. The preferred high viscosity polyalphaolefin has a kinematic viscosity exceeding about 8 cSt and is the reaction product of the trimerization, oligomerization, or polymerization of an alpha olefin or a mixture of one or more product thereof. The high viscosity polyalphaolefins are useful as lubricants or lubricant additives.
    Type: Grant
    Filed: April 22, 2003
    Date of Patent: April 1, 2008
    Assignee: Chevron Phillips Chemical Company, LP
    Inventors: Kenneth D. Hope, Donald A. Stern, Donald W. Twomey, J. Barry Collins
  • Patent number: 7309805
    Abstract: In an embodiment, a method is disclosed to increase the activity of an ionic liquid catalyst comprising contacting an ionic liquid catalyst with oxygen. In another embodiment, a method is disclosed comprising introducing into a reaction zone a monomer feed and an ionic liquid catalyst and controlling the amount of oxygen present in the reaction zone to maintain a conversion reaction of the monomer. In another embodiment, a polyalphaolefin oligomerization system is disclosed comprising a reactor configured to receive and mix monomer, ionic liquid catalyst, and oxygen; and a controller coupled to an oxygen source and configured to control the amount of oxygen present in a catalyzed reaction zone to maintain a conversion reaction of the monomer.
    Type: Grant
    Filed: November 1, 2004
    Date of Patent: December 18, 2007
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Kenneth D. Hope, Donald A. Stern, Elizabeth A. Benham
  • Publication number: 20070280138
    Abstract: Embodiments for a system and method of broadcasting messages to communication devices in a mobile communication network are described. The method includes registering at least one communication device configured to receive broadcast messages serviced by a base station, allocating at least one registered communication device as a primary communication device for the base station and the remaining registered communication devices as secondary communication devices, and providing information identifying the primary communication device to each secondary communication device. The method further includes allocating a channel for transmitting a multicast message to the primary communication device, providing information identifying the allocated channel to the primary and secondary communication devices, and transmitting broadcast data over the allocated channel.
    Type: Application
    Filed: May 25, 2007
    Publication date: December 6, 2007
    Inventor: Donald Stern
  • Patent number: 7259284
    Abstract: A process for preparing very high viscosity polyalphaolefins using an acidic ionic liquid oligomerization catalyst in the absence of an organic diluent and the products formed thereby. A method of continuously manufacturing a high viscosity polyalphaolefin product by introducing a monomer and an ionic liquid catalyst together into a reaction zone while simultaneously withdrawing from the reaction zone a reaction zone effluent that contains the high viscosity polyalphaolefin. The reaction zone is operated under reaction conditions suitable for producing the high viscosity polyalphaolefin product. The preferred high viscosity polyalphaolefin has a kinematic viscosity exceeding 8 cSt and is the reaction product of the trimerization, oligomerization, or polymerization of an alpha olefin or a mixture of one or more product thereof. The high viscosity polyalphaolefins are useful as lubricants or lubricant additives.
    Type: Grant
    Filed: July 27, 2004
    Date of Patent: August 21, 2007
    Assignee: Chevron Phillips Chemical Company, LP
    Inventors: Kenneth D. Hope, Donald W. Twomey, Michael S. Driver, Donald A. Stern, J. Barry Collins, Thomas V. Harris
  • Publication number: 20060247482
    Abstract: In an embodiment, a method to produce an oligomer using a recycle stream that contains a substantially non-isomerized monomer. The monomer is contacted with an ionic liquid catalyst to produce the oligomer. The monomer includes at least one alpha olefin. Along with the substantially non-isomerized monomer, a dimer can also be recycled. At least a portion of the catalyst can be recycled also.
    Type: Application
    Filed: November 1, 2005
    Publication date: November 2, 2006
    Inventors: Kenneth Hope, Donald Stern
  • Publication number: 20060130076
    Abstract: Methods and apparatus for linking a set of code modules for execution includes determining one or more code modules to be executed, ascertaining a hierarchical order in which the one or more code modules are to be executed, loading the one or more code modules to be executed, and building a chain connecting the one or more code modules such that the one or more code modules will automatically execute in the hierarchical order when a first one of the one or more code modules is executed.
    Type: Application
    Filed: December 30, 2005
    Publication date: June 15, 2006
    Inventor: Donald Stern
  • Patent number: 7047537
    Abstract: Methods and apparatus for linking a set of code modules for execution includes determining one or more code modules to be executed, ascertaining a hierarchical order in which the one or more code modules are to be executed, loading the one or more code modules to be executed, and building a chain connecting the one or more code modules such that the one or more code modules will automatically execute in the hierarchical order when a first one of the one or more code modules is executed.
    Type: Grant
    Filed: January 4, 2000
    Date of Patent: May 16, 2006
    Assignee: Cisco Technology, Inc.
    Inventor: Donald Stern
  • Publication number: 20060020088
    Abstract: In an embodiment, a method is disclosed to increase the activity of an ionic liquid catalyst comprising contacting an ionic liquid catalyst with oxygen. In another embodiment, a method is disclosed comprising introducing into a reaction zone a monomer feed and an ionic liquid catalyst and controlling the amount of oxygen present in the reaction zone to maintain a conversion reaction of the monomer. In another embodiment, a polyalphaolefin oligomerization system is disclosed comprising a reactor configured to receive and mix monomer, ionic liquid catalyst, and oxygen; and a controller coupled to an oxygen source and configured to control the amount of oxygen present in a catalyzed reaction zone to maintain a conversion reaction of the monomer.
    Type: Application
    Filed: November 1, 2004
    Publication date: January 26, 2006
    Inventors: Kenneth Hope, Donald Stern, Elizabeth Benham
  • Patent number: 6984605
    Abstract: A method for manufacturing ionic liquid compositions by use of a two-step process which includes the contacting, under first reaction conditions, an amine compound with a hydrogen halide that is preferably in the gaseous form to provide a first reaction mixture. The first reaction mixture is then contacted, under second reaction conditions, with a metal halide compound to form the ionic liquid end-product.
    Type: Grant
    Filed: April 22, 2003
    Date of Patent: January 10, 2006
    Assignee: Chevron Phillips Chemical Company, LP
    Inventors: Kenneth D. Hope, Donald A. Stern, Donald W. Twomey
  • Publication number: 20050255435
    Abstract: A remote control includes a base and an insert that is attached in a detachable manner to the base. The base includes a remote control circuit, a button coupled to operate the remote control circuit and a fastener capable of holding the insert. The insert includes a printed publication (such as a card, a sheet of paper or a booklet) containing at least one leaf having human-understandable content (such as text and/or graphics). To assemble the remote control, a user attaches the insert to the fastener, so that the human-understandable content is laid over the button. Thereafter, when the user operates the button (e.g. by touching the leaf), the base transmits a remote control signal that causes a host device to visually display information related to the human-understandable content at the touched location. A base in the form of a three ring binder gives the user an intuitive feel of simply touching human-understandable content on a leaf in the binder to view a display of information related to the content.
    Type: Application
    Filed: July 25, 2005
    Publication date: November 17, 2005
    Inventors: Peter Redford, Donald Stern
  • Publication number: 20050119423
    Abstract: In an embodiment, a method is disclosed to increase the activity of an ionic liquid catalyst comprising emulsifying the ionic liquid catalyst with one or more liquid components. In an embodiment, a method is disclosed comprising introducing into a reaction zone a monomer feed and a reduced amount of ionic liquid catalyst and controlling an amount of shear present in the reaction zone to maintain a desired conversion reaction of the monomer. In an embodiment, a catalyzed reaction system is disclosed comprising a reactor configured to receive one or more liquid components and ionic liquid catalyst; a device coupled to the reactor for adding high shear to the liquid components and ionic liquid catalyst; and a controller coupled to the device for adding high shear and configured to control the amount of shear added to a catalyzed reaction zone to maintain a conversion reaction.
    Type: Application
    Filed: November 1, 2004
    Publication date: June 2, 2005
    Inventors: Lee Bergman, Kenneth Hope, Elizabeth Benham, Donald Stern
  • Publication number: 20050113621
    Abstract: A process for preparing very high viscosity polyalphaolefins using an acidic ionic liquid oligomerization catalyst in the absence of an organic diluent and the products formed thereby. A method of continuously manufacturing a high viscosity polyalphaolefin product by introducing a monomer and an ionic liquid catalyst together into a reaction zone while simultaneously withdrawing from the reaction zone a reaction zone effluent that contains the high viscosity polyalphaolefin. The reaction zone is operated under reaction conditions suitable for producing the high viscosity polyalphaolefin product. The preferred high viscosity polyalphaolefin has a kinematic viscosity exceeding 8 cSt and is the reaction product of the trimerization, oligomerization, or polymerization of an alpha olefin or a mixture of one or more product thereof. The high viscosity polyalphaolefins are useful as lubricants or lubricant additives.
    Type: Application
    Filed: July 27, 2004
    Publication date: May 26, 2005
    Inventors: Kenneth Hope, Donald Twomey, Michael Driver, Donald Stern, J. Collins, Thomas Harris
  • Publication number: 20040030075
    Abstract: A method of continuously manufacturing a high viscosity polyalphaolefin product by introducing a monomer and an ionic liquid catalyst together into a reaction zone while simultaneously withdrawing from the reaction zone a reaction zone effluent that contains the high viscosity polyalphaolefin. The reaction zone is operated under reaction conditions suitable for producing the high viscosity polyalphaolefin product. The preferred high viscosity polyalphaolefin has a kinematic viscosity exceeding about 8 cSt and is the reaction product of the trimerization, oligomerization, or polymerization of an alpha olefin or a mixture of one or more product thereof. The high viscosity polyalphaolefins are useful as lubricants or lubricant additives.
    Type: Application
    Filed: April 22, 2003
    Publication date: February 12, 2004
    Inventors: Kenneth D. Hope, Donald A. Stern, Donald W. Twomey, J. Barry Collins