Patents by Inventor Paul K. Samples
Paul K. Samples 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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Publication number: 20160048139Abstract: A real-time method for operating plant executing a chemical process, comprising continuously, periodically or intermittently obtaining one or more process variable measurements; optionally, continuously, periodically or intermittently estimating one or more inferred process variables from measured process variables and/or mathematical models; estimating the current state of the chemical process based on the process variable measurements and/or inferred process variables; assessing the current state of the chemical process; projecting future probable process state based on the current state of the chemical process; linking the current and/or future probable process state with information in a database, the information comprising preferred actions aimed at favorably influencing the future process state; providing the information to a chemical process plant operating personnel; and optionally, performing manual and/or automatic actions aimed at favorably influencing the future process state of the chemical proceType: ApplicationFiled: March 4, 2014Publication date: February 18, 2016Inventors: Paul K. Samples, John R. Parrish
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Patent number: 8862438Abstract: A method for improving the prediction of polymer properties and a system having improved polymer property prediction capabilities is provided. The method for improving the prediction of polymer properties comprises: (1) providing a polymer; (2) providing a prediction model; (3) utilizing said prediction model to define an average polymer property prediction value; (4) determining a feasible range; (5) measuring one or more properties of said polymer; (6) determining whether said one or measured polymer properties are within said feasible range: (7) validating said one or more measured polymer properties if said one or more measured polymer properties fall within the feasible range or invalidating said one or more measured polymer properties if said one or more measured polymer properties fall outside of the feasible range; (8) optionally updating said prediction model; (9) repeating said previous steps at least one or more times; and (10) thereby improving the prediction of polymer properties.Type: GrantFiled: July 24, 2008Date of Patent: October 14, 2014Assignee: Dow Global Technologies LLCInventors: Jeffrey B. Drabish, John R. Parrish, Marcel Schaefer, Ivan J. Hartley, Paul K. Samples, Mark L. Nelson
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Patent number: 8742035Abstract: Embodiments of the invention provide a method of controlling a gas-phase polymerization process. The method includes determining a difference between a control variable of the polymerization process, such as the production rate, and the desired value of the control variable; adjusting or maintaining a first manipulated variable to at least partially compensate for the difference between the control variable and the desired value; and adjusting or maintaining a second manipulated variable to at least partially compensate for the effect of adjusting or maintaining the first manipulated variable.Type: GrantFiled: December 12, 2012Date of Patent: June 3, 2014Assignee: Dow Global Technologies LLCInventors: Paul K. Samples, John R. Parrish, Ivan J. Hartley, Jeffrey B. Drabish
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Patent number: 8354481Abstract: The present invention provides methods of controlling a gas-phase polymerization process. The method includes determining a difference between a control variable of the polymerization process, such as the production rate, and the desired value of the control variable; adjusting or maintaining a first manipulated variable to at least partially compensate for the difference between the control variable and the desired value; and adjusting or maintaining a second manipulated variable to at least partially compensate for the effect of adjusting or maintaining the first manipulated variable. The first and second manipulated variables can include process variables such as the fluidized bed weight, the catalyst concentration, the concentration of one or more monomers, the flow of one or more comonomers, the ratio of one comonomer to another comonomer, the activator concentration, the ratio of an activator to selectivity control agent, the concentration of a chain transfer agent, and the retardant concentration.Type: GrantFiled: December 9, 2011Date of Patent: January 15, 2013Assignee: Dow Global Technologies LLCInventors: Paul K. Samples, John R. Parrish, Ivan J. Hartley, Jeffrey B. Drabish
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Publication number: 20120136482Abstract: The present invention provides methods of controlling a gas-phase polymerization process. The method includes determining a difference between a control variable of the polymerization process, such as the production rate, and the desired value of the control variable; adjusting or maintaining a first manipulated variable to at least partially compensate for the difference between the control variable and the desired value; and adjusting or maintaining a second manipulated variable to at least partially compensate for the effect of adjusting or maintaining the first manipulated variable. The first and second manipulated variables can include process variables such as the fluidized bed weight, the catalyst concentration, the concentration of one or more monomers, the flow of one or more comonomers, the ratio of one comonomer to another comonomer, the activator concentration, the ratio of an activator to selectivity control agent, the concentration of a chain transfer agent, and the retardant concentration.Type: ApplicationFiled: December 9, 2011Publication date: May 31, 2012Applicant: Dow Global Technologies LLCInventors: Paul K. Samples, John R. Parrish, Ivan J. Hartley, Jeffrey B. Brabish
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Patent number: 8093341Abstract: Embodiments of the invention provide a method of controlling a gas-phase polymerization process. The method includes determining a difference between a control variable of the polymerization process, such as the production rate, and the desired value of the control variable; adjusting or maintaining a first manipulated variable to at least partially compensate for the difference between the control variable and the desired value; and adjusting or maintaining a second manipulated variable to at least partially compensate for the effect of adjusting or maintaining the first manipulated variable.Type: GrantFiled: October 18, 2005Date of Patent: January 10, 2012Assignee: Dow Global Technologies LLCInventors: John R. Parrish, Paul K. Samples, Ivan J. Hartley, Jeffrey Brian Drabish
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Patent number: 8032328Abstract: The invention provides a novel method of monitoring a process. The method also has the ability to take predetermined actions based on the monitored data. These actions avoid or mitigate process abnormalities or upsets that might impact product quality, production, and/or process efficiencies. The method includes the steps of: obtaining at least one input process variable; determining a comparative process value based on the at least one input process variable using a first method having a first time-based weighting function; determining an expected process value based on the at least one input process variable using a second method having a second time-based weighting function; determining a first deviation value based on the at least one input process variable or historical data; calculating a limit range having a maximum limit and a minimum limit using the expected process value and the first deviation value; and comparing the comparative process value to the limit range.Type: GrantFiled: April 13, 2007Date of Patent: October 4, 2011Assignee: Dow Global Technologies LLCInventors: Paul K. Samples, John R. Parrish, Debbie D. Rath, Thomas J. McNeil
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Publication number: 20090177439Abstract: The invention provides a novel method of monitoring a process. The method also has the ability to take predetermined actions based on the monitored data. These actions avoid or mitigate process abnormalities or upsets that might impact product quality, production, and/or process efficiencies. The method includes the steps of: obtaining at least one input process variable; determining a comparative process value based on the at least one input process variable using a first method having a first time-based weighting function; determining an expected process value based on the at least one input process variable using a second method having a second time-based weighting function; determining a first deviation value based on the at least one input process variable or historical data; calculating a limit range having a maximum limit and a minimum limit using the expected process value and the first deviation value; and comparing the comparative process value to the limit range.Type: ApplicationFiled: April 13, 2007Publication date: July 9, 2009Inventors: Paul K. Samples, John R Parrish, Debbie R. Rath, Tom J. McNeil
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Publication number: 20080119621Abstract: Embodiments of the invention provide a method of controlling a gas-phase polymerization process. The method includes determining a difference between a control variable of the polymerization process, such as the production rate, and the desired value of the control variable; adjusting or maintaining a first manipulated variable to at least partially compensate for the difference between the control variable and the desired value; and adjusting or maintaining a second manipulated variable to at least partially compensate for the effect of adjusting or maintaining the first manipulated variable.Type: ApplicationFiled: October 18, 2005Publication date: May 22, 2008Applicant: Dow Global Technologies Inc.Inventors: Paul K. Samples, John R. Parrish, Ivan J. Hartley, Jeffrey B. Drabish