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).
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Patent number: 9505675Abstract: 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: GrantFiled: February 9, 2015Date of Patent: November 29, 2016Assignee: Chevron Phillips Chemical Company LPInventors: Orson L Sydora, Bruce E Kreischer, Donald A Stern, Varadee Vittur
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Publication number: 20160229766Abstract: 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: ApplicationFiled: February 9, 2015Publication date: August 11, 2016Applicant: Chevron Phillips Chemical Company LPInventors: Orson L. Sydora, Bruce E. Kreischer, Donald A. Stern, Varadee Vittur
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Patent number: 8163856Abstract: 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: GrantFiled: April 25, 2011Date of Patent: April 24, 2012Assignee: Chevron Phillips Chemical Company LPInventors: Lee H. Bergman, Kenneth D. Hope, Elizabeth A. Benham, Donald A. Stern
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Publication number: 20110201766Abstract: 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: ApplicationFiled: April 25, 2011Publication date: August 18, 2011Applicant: CHEVRON PHILLIPS CHEMICAL COMPANY LPInventors: Lee H. BERGMAN, Kenneth D. HOPE, Elizabeth A. BENHAM, Donald A. STERN
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Patent number: 7951889Abstract: 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: GrantFiled: November 1, 2004Date of Patent: May 31, 2011Assignee: Chevron Phillips Chemical Company LPInventors: Lee H. Bergman, Kenneth D. Hope, Elizabeth A. Benham, Donald A. Stern
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Patent number: 7615598Abstract: 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: GrantFiled: March 14, 2008Date of Patent: November 10, 2009Assignee: Chevron Phillips Chemical Company LPInventors: Kenneth D. Hope, Donald A. Stern, Donald W. Twomey, J. Barry Collins
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Publication number: 20080161623Abstract: 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: ApplicationFiled: March 14, 2008Publication date: July 3, 2008Applicant: CHEVRON PHILLIPS CHEMICAL COMPANY LPInventors: Kenneth D. Hope, Donald A. Stern, Donald W. Twomey, J. Barry Collins
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Patent number: 7351780Abstract: 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: GrantFiled: April 22, 2003Date of Patent: April 1, 2008Assignee: Chevron Phillips Chemical Company, LPInventors: Kenneth D. Hope, Donald A. Stern, Donald W. Twomey, J. Barry Collins
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Patent number: 7309805Abstract: 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: GrantFiled: November 1, 2004Date of Patent: December 18, 2007Assignee: Chevron Phillips Chemical Company LPInventors: Kenneth D. Hope, Donald A. Stern, Elizabeth A. Benham
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Publication number: 20070280138Abstract: 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: ApplicationFiled: May 25, 2007Publication date: December 6, 2007Inventor: Donald Stern
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Patent number: 7259284Abstract: 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: GrantFiled: July 27, 2004Date of Patent: August 21, 2007Assignee: Chevron Phillips Chemical Company, LPInventors: Kenneth D. Hope, Donald W. Twomey, Michael S. Driver, Donald A. Stern, J. Barry Collins, Thomas V. Harris
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Publication number: 20060247482Abstract: 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: ApplicationFiled: November 1, 2005Publication date: November 2, 2006Inventors: Kenneth Hope, Donald Stern
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Publication number: 20060130076Abstract: 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: ApplicationFiled: December 30, 2005Publication date: June 15, 2006Inventor: Donald Stern
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Patent number: 7047537Abstract: 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: GrantFiled: January 4, 2000Date of Patent: May 16, 2006Assignee: Cisco Technology, Inc.Inventor: Donald Stern
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Publication number: 20060020088Abstract: 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: ApplicationFiled: November 1, 2004Publication date: January 26, 2006Inventors: Kenneth Hope, Donald Stern, Elizabeth Benham
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Patent number: 6984605Abstract: 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: GrantFiled: April 22, 2003Date of Patent: January 10, 2006Assignee: Chevron Phillips Chemical Company, LPInventors: Kenneth D. Hope, Donald A. Stern, Donald W. Twomey
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Publication number: 20050255435Abstract: 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: ApplicationFiled: July 25, 2005Publication date: November 17, 2005Inventors: Peter Redford, Donald Stern
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Publication number: 20050119423Abstract: 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: ApplicationFiled: November 1, 2004Publication date: June 2, 2005Inventors: Lee Bergman, Kenneth Hope, Elizabeth Benham, Donald Stern
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Publication number: 20050113621Abstract: 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: ApplicationFiled: July 27, 2004Publication date: May 26, 2005Inventors: Kenneth Hope, Donald Twomey, Michael Driver, Donald Stern, J. Collins, Thomas Harris
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Publication number: 20040030075Abstract: 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: ApplicationFiled: April 22, 2003Publication date: February 12, 2004Inventors: Kenneth D. Hope, Donald A. Stern, Donald W. Twomey, J. Barry Collins