Patents by Inventor Mitchell D. Refvik

Mitchell D. Refvik 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: 10722874
    Abstract: A method comprising a) contacting a solvent, a carboxylic acid, and a peroxide-containing compound to form an acidic mixture wherein a weight ratio of solvent to carboxylic acid in the acidic mixture is from about 1:1 to about 100:1; b) contacting a titanium-containing compound and the acidic mixture to form a solubilized titanium mixture wherein an equivalent molar ratio of titanium-containing compound to carboxylic acid in the solubilized titanium mixture is from about 1:1 to about 1:4 and an equivalent molar ratio of titanium-containing compound to peroxide-containing compound in the solubilized titanium mixture is from about 1:1 to about 1:20; and c) contacting a chromium-silica support comprising from about 0.1 wt. % to about 20 wt. % water and the solubilized titanium mixture to form an addition product and drying the addition product by heating to a temperature in a range of from about 50° C. to about 150° C. and maintaining the temperature in the range of from about 50° C. to about 150° C.
    Type: Grant
    Filed: January 28, 2020
    Date of Patent: July 28, 2020
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Max P. McDaniel, Kathy S. Clear, Jeremy M. Praetorius, Eric D. Schwerdtfeger, Mitchell D. Refvik, Mark L. Hlavinka
  • Publication number: 20200164351
    Abstract: A method comprising a) contacting a solvent, a carboxylic acid, and a peroxide-containing compound to form an acidic mixture wherein a weight ratio of solvent to carboxylic acid in the acidic mixture is from about 1:1 to about 100:1; b) contacting a titanium-containing compound and the acidic mixture to form a solubilized titanium mixture wherein an equivalent molar ratio of titanium-containing compound to carboxylic acid in the solubilized titanium mixture is from about 1:1 to about 1:4 and an equivalent molar ratio of titanium-containing compound to peroxide-containing compound in the solubilized titanium mixture is from about 1:1 to about 1:20; and c) contacting a chromium-silica support comprising from about 0.1 wt. % to about 20 wt. % water and the solubilized titanium mixture to form an addition product and drying the addition product by heating to a temperature in a range of from about 50° C. to about 150° C. and maintaining the temperature in the range of from about 50° C. to about 150° C.
    Type: Application
    Filed: January 28, 2020
    Publication date: May 28, 2020
    Inventors: Max P. McDaniel, Kathy S. Clear, Jeremy M. Praetorius, Eric D. Schwerdtfeger, Mitchell D. Refvik, Mark L. Hlavinka
  • Publication number: 20200114343
    Abstract: A pre-catalyst composition comprising a) a silica support comprising silica wherein an amount of silica ranges from about 70 wt. % to about 95 wt. % based upon a total weight of the silica support, b) a chromium-containing compound wherein an amount of chromium ranges from about 0.1 wt. % to about 5 wt. % based upon the amount of silica, c) a titanium-containing compound wherein an amount of titanium ranges from about 0.1 wt. % to about 20 wt. % based upon the amount of silica, d) a carboxylic acid wherein an equivalent molar ratio of titanium-containing compound to carboxylic acid ranges from about 1:1 to about 1:10, and e) a nitrogen-containing compound with a molecular formula containing at least one nitrogen atom wherein an equivalent molar ratio of titanium-containing compound to nitrogen-containing compound ranges from about 1:0.5 to about 1:10.
    Type: Application
    Filed: December 11, 2019
    Publication date: April 16, 2020
    Inventors: Max P. McDaniel, Kathy S. Clear, Jeremy M. Praetorius, Eric D. Schwerdtfeger, Mitchell D. Refvik, Mark L. Hlavinka
  • Patent number: 10543480
    Abstract: A pre-catalyst composition comprising a) a silica support comprising silica wherein an amount of silica ranges from about 70 wt. % to about 95 wt. % based upon a total weight of the silica support, b) a chromium-containing compound wherein an amount of chromium ranges from about 0.1 wt. % to about 5 wt. % based upon the amount of silica, c) a titanium-containing compound wherein an amount of titanium ranges from about 0.1 wt. % to about 20 wt. % based upon the amount of silica, d) a carboxylic acid wherein an equivalent molar ratio of titanium-containing compound to carboxylic acid ranges from about 1:1 to about 1:10, and e) a nitrogen-containing compound with a molecular formula containing at least one nitrogen atom wherein an equivalent molar ratio of titanium-containing compound to nitrogen-containing compound ranges from about 1:0.5 to about 1:10.
    Type: Grant
    Filed: April 16, 2018
    Date of Patent: January 28, 2020
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Max P. McDaniel, Kathy S. Clear, Jeremy M. Praetorius, Eric D. Schwerdtfeger, Mitchell D. Refvik, Mark L. Hlavinka
  • Patent number: 10513492
    Abstract: Disclosed herein are systems and processes involving the catalyzed cleavage reaction of dimethyl sulfide to methyl mercaptan. The catalyzed cleavage reaction can be a standalone system or process, or can be integrated with a methyl mercaptan production plant.
    Type: Grant
    Filed: June 5, 2018
    Date of Patent: December 24, 2019
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Reza Khankal, Henry Hwu, Daniel M. Hasenberg, Christina M. Barry, Mitchell D. Refvik, Michael S. Hankinson
  • Publication number: 20190314797
    Abstract: A pre-catalyst composition comprising a) a silica support comprising silica wherein an amount of silica ranges from about 70 wt. % to about 95 wt. % based upon a total weight of the silica support, b) a chromium-containing compound wherein an amount of chromium ranges from about 0.1 wt. % to about 5 wt. % based upon the amount of silica, c) a titanium-containing compound wherein an amount of titanium ranges from about 0.1 wt. % to about 20 wt. % based upon the amount of silica, d) a carboxylic acid wherein an equivalent molar ratio of titanium-containing compound to carboxylic acid ranges from about 1:1 to about 1:10, and e) a nitrogen-containing compound with a molecular formula containing at least one nitrogen atom wherein an equivalent molar ratio of titanium-containing compound to nitrogen-containing compound ranges from about 1:0.5 to about 1:10.
    Type: Application
    Filed: April 16, 2018
    Publication date: October 17, 2019
    Inventors: Max P. McDaniel, Kathy S. Clear, Jeremy M. Praetorius, Eric D. Schwerdtfeger, Mitchell D. Refvik, Mark L. Hlavinka
  • Patent number: 10273204
    Abstract: Disclosed herein are systems and processes involving the catalyzed cleavage reaction of dimethyl sulfide to methyl mercaptan. The catalyzed cleavage reaction can be a standalone system or process, or can be integrated with a methyl mercaptan production plant.
    Type: Grant
    Filed: August 19, 2016
    Date of Patent: April 30, 2019
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Reza Khankal, Henry Hwu, Daniel M. Hasenberg, Christina M. Barry, Mitchell D. Refvik, Michael S. Hankinson
  • Publication number: 20180282268
    Abstract: Disclosed herein are systems and processes involving the catalyzed cleavage reaction of dimethyl sulfide to methyl mercaptan. The catalyzed cleavage reaction can be a standalone system or process, or can be integrated with a methyl mercaptan production plant.
    Type: Application
    Filed: June 5, 2018
    Publication date: October 4, 2018
    Inventors: Reza KHANKAL, Henry HWU, Daniel M. HASENBERG, Christina M. BARRY, Mitchell D. REFVIK, Michael S. HANKINSON
  • Publication number: 20180050986
    Abstract: Disclosed herein are systems and processes involving the catalyzed cleavage reaction of dimethyl sulfide to methyl mercaptan. The catalyzed cleavage reaction can be a standalone system or process, or can be integrated with a methyl mercaptan production plant.
    Type: Application
    Filed: August 19, 2016
    Publication date: February 22, 2018
    Inventors: Reza KHANKAL, Henry HWU, Daniel M. HASENBERG, Christina M. BARRY, Mitchell D. REFVIK, Michael S. HANKINSON
  • Patent number: 9340717
    Abstract: The present invention discloses processes for forming polythiol compositions from olefinic hydrocarbons such as cyclooctadiene, cyclododecatriene, and trivinylcyclohexane. The polythiol compositions produced from these processes, including the sulfur-containing compounds of these compositions, also are described.
    Type: Grant
    Filed: August 11, 2015
    Date of Patent: May 17, 2016
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Michael S. Matson, Colin Cameron, Alastair Robert Marrion, Anthony Colin Wright, Mitchell D. Refvik, Eric J. Netemeyer
  • Patent number: 9340716
    Abstract: The present invention discloses processes for forming polythiol compositions from olefinic hydrocarbons such as cyclooctadiene, cyclododecatriene, and trivinylcyclohexane. The polythiol compositions produced from these processes, including the sulfur-containing compounds of these compositions, also are described.
    Type: Grant
    Filed: August 10, 2015
    Date of Patent: May 17, 2016
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Michael S. Matson, Colin Cameron, Alastair Robert Marrion, Anthony Colin Wright, Mitchell D. Refvik, Eric J. Netemeyer
  • Patent number: 9340715
    Abstract: The present invention discloses processes for forming polythiol compositions from olefinic hydrocarbons such as cyclooctadiene, cyclododecatriene, and trivinylcyclohexane. The polythiol compositions produced from these processes, including the sulfur-containing compounds of these compositions, also are described.
    Type: Grant
    Filed: August 7, 2015
    Date of Patent: May 17, 2016
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Michael S. Matson, Colin Cameron, Alastair Robert Marrion, Anthony Colin Wright, Mitchell D. Refvik, Eric J. Netemeyer
  • Publication number: 20150344752
    Abstract: The present invention discloses processes for forming polythiol compositions from olefinic hydrocarbons such as cyclooctadiene, cyclododecatriene, and trivinylcyclohexane. The polythiol compositions produced from these processes, including the sulfur-containing compounds of these compositions, also are described.
    Type: Application
    Filed: August 10, 2015
    Publication date: December 3, 2015
    Inventors: Michael S. Matson, Colin Cameron, Alastair Robert Marrion, Anthony Colin Wright, Mitchell D. Refvik, Eric J. Netemeyer
  • Publication number: 20150344756
    Abstract: The present invention discloses processes for forming polythiol compositions from olefinic hydrocarbons such as cyclooctadiene, cyclododecatriene, and trivinylcyclohexane. The polythiol compositions produced from these processes, including the sulfur-containing compounds of these compositions, also are described.
    Type: Application
    Filed: August 11, 2015
    Publication date: December 3, 2015
    Inventors: Michael S. Matson, Colin Cameron, Alastair Robert Marrion, Anthony Colin Wright, Mitchell D. Refvik, Eric J. Netemeyer
  • Publication number: 20150344742
    Abstract: The present invention discloses processes for forming polythiol compositions from olefinic hydrocarbons such as cyclooctadiene, cyclododecatriene, and trivinylcyclohexane. The polythiol compositions produced from these processes, including the sulfur-containing compounds of these compositions, also are described.
    Type: Application
    Filed: August 7, 2015
    Publication date: December 3, 2015
    Inventors: Michael S. Matson, Colin Cameron, Alastair Robert Marrion, Anthony Colin Wright, Mitchell D. Refvik, Eric J. Netemeyer
  • Publication number: 20150266734
    Abstract: Disclosed are processes for purifying feed streams containing hydrogen sulfide and sulfur-containing impurities by removing sulfur-containing impurities, such as elemental sulfur and polysulfanes, using solid catalytic sorbents. Also disclosed are processes for producing hydrogen sulfide.
    Type: Application
    Filed: March 21, 2014
    Publication date: September 24, 2015
    Applicant: Chevron Phillips Chemical Company LP
    Inventors: Daniel M. Hasenberg, Mitchell D. Refvik, Michael S. Matson, Maruti Bhandarkar, Ronald D. Knudsen
  • Patent number: 9133370
    Abstract: The present invention discloses processes for forming polythiol compositions from olefinic hydrocarbons such as cyclooctadiene, cyclododecatriene, and trivinylcyclohexane. The polythiol compositions produced from these processes, including the sulfur-containing compounds of these compositions, also are described.
    Type: Grant
    Filed: May 10, 2013
    Date of Patent: September 15, 2015
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Michael S. Matson, Colin Cameron, Alastair Robert Marrion, Anthony Colin Wright, Mitchell D. Refvik, Eric J. Netemeyer
  • Publication number: 20130240780
    Abstract: The present invention discloses processes for forming polythiol compositions from olefinic hydrocarbons such as cyclooctadiene, cyclododecatriene, and trivinylcyclohexane. The polythiol compositions produced from these processes, including the sulfur-containing compounds of these compositions, also are described.
    Type: Application
    Filed: May 10, 2013
    Publication date: September 19, 2013
    Applicant: Chevron Phillips Chemical Company LP
    Inventors: Michael S. Matson, Colin Cameron, Alastair Robert Marrion, Anthony Colin Wright, Mitchell D. Refvik, Eric J. Netemeyer
  • Patent number: 8461293
    Abstract: The present invention discloses processes for forming polythiol compositions from olefinic hydrocarbons such as cyclooctadiene, cyclododecatriene, and trivinylcyclohexane. The polythiol compositions produced from these processes, including the sulfur-containing compounds of these compositions, also are described.
    Type: Grant
    Filed: August 3, 2010
    Date of Patent: June 11, 2013
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Michael S. Matson, Mitchell D Refvik, Eric J Netemeyer, Colin Cameron, Alastair Robert Marrion, Anthony Colin Wright
  • Publication number: 20120035291
    Abstract: The present invention discloses processes for forming polythiol compositions from olefinic hydrocarbons such as cyclooctadiene, cyclododecatriene, and trivinylcyclohexane. The polythiol compositions produced from these processes, including the sulfur-containing compounds of these compositions, also are described.
    Type: Application
    Filed: August 3, 2010
    Publication date: February 9, 2012
    Applicant: CHEVRON PHILLIPS CHEMICAL COMPANY LP
    Inventors: Michael S. Matson, Mitchell D. Refvik, Eric J. Netemeyer, Colin Cameron, Alastair Robert Marrion, Anthony Colin Wright