Patents by Inventor James H. Davis

James H. Davis 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: 9901863
    Abstract: A process and system for separating CO2 from a flue gas stream is disclosed. The process involves (a) contacting a flue gas stream containing water vapor and CO2 with an ionic absorbent under absorption conditions to absorb at least a portion of the CO2 from the flue gas stream and form a CO2-absorbent complex; wherein the ionic absorbent comprises a cation and an anion comprising an amine moiety; and (b) recovering a gaseous product having a reduced CO2 content.
    Type: Grant
    Filed: November 14, 2014
    Date of Patent: February 27, 2018
    Assignees: Chevron U.S.A. Inc., University of South Alabama
    Inventors: Daniel Chinn, Russell Evan Cooper, Zunqing He, James H. Davis, Jr., Kevin N. West, Hye Kyung Timken, Michael S. Driver
  • Patent number: 9751044
    Abstract: An aqueous ionic absorbent solution is disclosed containing (a) about 15 wt. % to about 80 wt. % of one or more diluents, based on the total weight of the aqueous ionic absorbent solution; and (b) an ionic absorbent containing a cation and an anion comprising an amine moiety.
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: September 5, 2017
    Assignees: Chevron U.S.A. Inc., University of South Alabama
    Inventors: Daniel Chinn, Rusell Evan Cooper, Zunqing He, James H. Davis, Jr., Kevin N. West, Hye Kyung Timken, Michael S. Driver
  • Publication number: 20160016112
    Abstract: An aqueous ionic absorbent solution is disclosed containing (a) about 15 wt. % to about 80 wt. % of one or more diluents, based on the total weight of the aqueous ionic absorbent solution; and (b) an ionic absorbent containing a cation and an anion comprising an amine moiety.
    Type: Application
    Filed: September 30, 2015
    Publication date: January 21, 2016
    Inventors: Daniel Chinn, Rusell Evan Cooper, Zunqing He, James H. Davis, JR., Kevin N. West, Hye Kyung Timken, Michael S. Driver
  • Patent number: 9205371
    Abstract: Disclosed herein is a method for improving the total energy demand required to separate carbon dioxide (CO2) from an aqueous ionic absorbent solution in a post-combustion carbon capture process. The method involves (a) contacting a flue gas stream containing CO2 with an aqueous ionic absorbent solution under absorption conditions to absorb at least a portion of the CO2 from the flue gas stream and form a CO2-aqueous ionic absorbent solution stream, wherein the aqueous ionic absorbent solution comprises one or more diluents and an ionic absorbent containing a cation and an anion comprising an amine moiety; and (b) subjecting at least a portion of the CO2-aqueous ionic absorbent solution stream to desorption conditions to form a CO2-rich stream and an aqueous ionic absorbent solution stream having a reduced CO2 content.
    Type: Grant
    Filed: December 23, 2011
    Date of Patent: December 8, 2015
    Assignees: Chevron U.S.A. Inc., University of South Alabama
    Inventors: Russell Evan Cooper, Daniel Chinn, Zunqing He, Hye Hyung Timken, Michael S. Driver, James H. Davis, Jr., Kevin N. West
  • Patent number: 9180403
    Abstract: An aqueous ionic absorbent solution is disclosed containing (a) about 15 wt. % to about 80 wt. % of one or more diluents, based on the total weight of the aqueous ionic absorbent solution; and (b) an ionic absorbent containing a cation and an anion comprising an amine moiety.
    Type: Grant
    Filed: December 30, 2010
    Date of Patent: November 10, 2015
    Assignees: Chevron U.S.A. Inc., University of South Alabama
    Inventors: Daniel Chinn, Russell Evan Cooper, Zunqing He, James H. Davis, Jr., Kevin N. West, Hye Kyung Timken, Michael S. Driver
  • Publication number: 20150068398
    Abstract: A process and system for separating CO2 from a flue gas stream is disclosed. The process involves (a) contacting a flue gas stream containing water vapor and CO2 with an ionic absorbent under absorption conditions to absorb at least a portion of the CO2 from the flue gas stream and form a CO2-absorbent complex; wherein the ionic absorbent comprises a cation and an anion comprising an amine moiety; and (b) recovering a gaseous product having a reduced CO2 content.
    Type: Application
    Filed: November 14, 2014
    Publication date: March 12, 2015
    Inventors: Daniel Chinn, Russell Evan Cooper, Zunqing He, James H. Davis, JR., Kevin N. West, Hye Kyung Timken, Michael S. Driver
  • Patent number: 8952193
    Abstract: One aspect of the present invention relates to amine-functionalized task-specific ionic liquids (TSILs). In certain embodiments, the ionic liquids of the invention comprise beta-hydroxy amines, aryl amines or tertiary amines. The TSILs may be used for gas capture, capitalizing on their non-volatile nature. In certain embodiments, the captured gas is selected from the group consisting of CO2, SO2, CS2, and NO2. Another aspect of the present invention relates to a library of CO2-philic salts, which library facilitates reactive gas separation. In certain embodiments, the CO2-philic salts are CO2-reactive TSILs. In certain embodiments, the CO2-philic salts are resinous or plastic in nature.
    Type: Grant
    Filed: September 17, 2013
    Date of Patent: February 10, 2015
    Assignee: University of South Alabama
    Inventor: James H. Davis, Jr.
  • Patent number: 8911539
    Abstract: A process and system for separating CO2 from a flue gas stream is disclosed. The process involves (a) contacting a flue gas stream containing water vapor and CO2 with an ionic absorbent under absorption conditions to absorb at least a portion of the CO2 from the flue gas stream and form a CO2-absorbent complex; wherein the ionic absorbent comprises a cation and an anion comprising an amine moiety; and (b) recovering a gaseous product having a reduced CO2 content.
    Type: Grant
    Filed: December 30, 2010
    Date of Patent: December 16, 2014
    Assignees: Chevron U.S.A. Inc., University of South Alabama
    Inventors: Daniel Chinn, Russell Evan Cooper, Zunqing He, James H. Davis, Jr., Kevin N. West, Hye Kyung Timken, Michael S. Driver
  • Publication number: 20140170054
    Abstract: One aspect of the present invention relates to amine-functionalized task-specific ionic liquids (TSILs). In certain embodiments, the ionic liquids of the invention comprise beta-hydroxy amines, aryl amines or tertiary amines. The TSILs may be used for gas capture, capitalizing on their non-volatile nature. In certain embodiments, the captured gas is selected from the group consisting of CO2, SO2, CS2, and NO2. Another aspect of the present invention relates to a library of CO2-philic salts, which library facilitates reactive gas separation. In certain embodiments, the CO2-philic salts are CO2-reactive TSILs. In certain embodiments, the CO2-philic salts are resinous or plastic in nature.
    Type: Application
    Filed: September 17, 2013
    Publication date: June 19, 2014
    Applicant: University of South Alabama
    Inventor: James H. Davis, JR.
  • Patent number: 8674135
    Abstract: One aspect of the present invention relates to ionic liquids comprising a pendant Bronsted-acidic group, e.g., a sulfonic acid group. Another aspect of the present invention relates to the use of an ionic liquid comprising a pendant Bronsted-acidic group to catalyze a Bronsted-acid-catalyzed chemical reaction. A third aspect of the present invention relates to ionic liquids comprising a pendant nucleophilic group, e.g., an amine. Still another aspect of the present invention relates to the use of an ionic liquid comprising a pendant nucleophilic group to catalyze a nucleophile-assisted chemical reaction. A fifth aspect of the present invention relates to the use of an ionic liquid comprising a pendant nucleophilic group to remove a gaseous impurity, e.g., carbon dioxide, from a gas, e.g., sour natural gas.
    Type: Grant
    Filed: February 26, 2010
    Date of Patent: March 18, 2014
    Assignee: University of South Alabama
    Inventor: James H. Davis, Jr.
  • Patent number: 8536371
    Abstract: One aspect of the present invention relates to amine-functionalized task-specific ionic liquids (TSILs). In certain embodiments, the ionic liquids of the invention comprise beta-hydroxy amines, aryl amines or tertiary amines. The TSILs may be used for gas capture, capitalizing on their non-volatile nature. In certain embodiments, the captured gas is selected from the group consisting of CO2, SO2, CS2, and NO2. Another aspect of the present invention relates to a library of CO2-philic salts, which library facilitates reactive gas separation. In certain embodiments, the CO2-philic salts are CO2-reactive TSILs. In certain embodiments, the CO2-philic salts are resinous or plastic in nature.
    Type: Grant
    Filed: April 2, 2008
    Date of Patent: September 17, 2013
    Assignee: University of South Alabama
    Inventor: James H. Davis, Jr.
  • Publication number: 20120171094
    Abstract: An aqueous ionic absorbent solution is disclosed containing (a) about 15 wt. % to about 80 wt. % of one or more diluents, based on the total weight of the aqueous ionic absorbent solution; and (b) an ionic absorbent containing a cation and an anion comprising an amine moiety.
    Type: Application
    Filed: December 30, 2010
    Publication date: July 5, 2012
    Applicants: University of South Alabama, Chevron U.S.A.
    Inventors: Daniel Chinn, Russell Evan Cooper, Zunqing He, James H. Davis, JR., Kevin N. West, Hye Kyung Timken, Michael S. Driver
  • Publication number: 20120167766
    Abstract: A process and system for separating CO2 from a flue gas stream is disclosed. The process involves (a) contacting a flue gas stream containing water vapor and CO2 with an ionic absorbent under absorption conditions to absorb at least a portion of the CO2 from the flue gas stream and form a CO2-absorbent complex; wherein the ionic absorbent comprises a cation and an anion comprising an amine moiety; and (b) recovering a gaseous product having a reduced CO2 content.
    Type: Application
    Filed: December 30, 2010
    Publication date: July 5, 2012
    Applicants: University of South Alabama, Chevron U.S.A.
    Inventors: Daniel Chinn, Russell Evan Cooper, Zunqing He, James H. Davis, JR., Kevin N. West, Hye Kyung Timken, Michael S. Driver
  • Patent number: 7750166
    Abstract: The present invention relates to novel ionic liquids comprising a docusate, docusate variant, or other sulfonate anion. The ionic liquids may be conveniently made via, for example, metathesis. The ionic liquids are often hydrophobic and useful in many hydrocarbon compositions, polymer compositions, and in supercritical carbon dioxide applications. The ionic liquids are capable of hindering static electricity buildup in the hydrocarbon compositions and can therefore minimize flammability and/or explosiveness.
    Type: Grant
    Filed: August 15, 2003
    Date of Patent: July 6, 2010
    Assignees: University of South Alabama, Sachem, Inc.
    Inventors: Roger Moulton, James H. Davis, Jr.
  • Patent number: 7744838
    Abstract: One aspect of the present invention relates to ionic liquids comprising a pendant Bronsted-acidic group, e.g., a sulfonic acid group. Another aspect of the present invention relates to the use of an ionic liquid comprising a pendant Bronsted-acidic group to catalyze a Bronsted-acid-catalyzed chemical reaction. A third aspect of the present invention relates to ionic liquids comprising a pendant nucleophilic group, e.g., an amine. Still another aspect of the present invention relates to the use of an ionic liquid comprising a pendant nucleophilic group to catalyze a nucleophile-assisted chemical reaction. A fifth aspect of the present invention relates to the use of an ionic liquid comprising a pendant nucleophilic group to remove a gaseous impurity, e.g., carbon dioxide, from a gas, e.g., sour natural gas.
    Type: Grant
    Filed: April 24, 2007
    Date of Patent: June 29, 2010
    Assignee: University of South Alabama
    Inventor: James H. Davis, Jr.
  • Publication number: 20100150804
    Abstract: One aspect of the present invention relates to amine-functionalized task-specific ionic liquids (TSILs). In certain embodiments, the ionic liquids of the invention comprise beta-hydroxy amines, aryl amines or tertiary amines. The TSILs may be used for gas capture, capitalizing on their non-volatile nature. In certain embodiments, the captured gas is selected from the group consisting of CO2, SO2, CS2, and NO2. Another aspect of the present invention relates to a library of CO2-philic salts, which library facilitates reactive gas separation. In certain embodiments, the CO2-philic salts are CO2-reactive TSILs. In certain embodiments, the CO2-philic salts are resinous or plastic in nature.
    Type: Application
    Filed: April 2, 2008
    Publication date: June 17, 2010
    Applicant: University of South Alabama
    Inventor: James H. Davis, JR.
  • Patent number: 7709635
    Abstract: One aspect of the present invention relates to “boronium” ions that are stable, hydrophobic, room-temperature ionic liquids. In certain embodiments, ionic liquids of the instant invention are represented by the formula [XnBY4?n]+(n?1)(n?1)Z?1, wherein X refers to a Lewis base, Y refers to a substituent covalently bonded to boron, Z?1 is a charge diffuse anion, and x is 2, 3 or 4. In certain embodiments, the ionic liquids of the instant invention are of the general type [X2BY2]+1Tf2N?1, wherein each X is independently a tertiary amine, a N-alkylimidazole or a pyridine; and each B—X bond is a B—N bond.
    Type: Grant
    Filed: May 19, 2006
    Date of Patent: May 4, 2010
    Assignee: University of South Alabama
    Inventor: James H. Davis, Jr.
  • Publication number: 20090200513
    Abstract: The present invention relates to novel ionic liquids comprising a docusate, docusate variant, or other sulfonate anion. The ionic liquids may be conveniently made via, for example, metathesis. The ionic liquids are often hydrophobic and useful in many hydrocarbon compositions, polymer compositions, and in supercritical carbon dioxide applications. The ionic liquids are capable of hindering static electricity buildup in the hydrocarbon compositions and can therefore minimize flammability and/or explosiveness.
    Type: Application
    Filed: March 13, 2009
    Publication date: August 13, 2009
    Applicants: University of South Alabama, Sachem, Inc.
    Inventors: Roger Moulton, James H. Davis, JR.
  • Patent number: 7360327
    Abstract: A pusher/bucket has back plate with wings pivotably mounted at either end, and a drop blade pivotably mounted thereto. The drop blade can be secured in a raised position where it is superimposed over the back plate; when in the raised position, the wings can be positioned relative to the back plate to provide a wing plow. The wings can be folded parallel to the back plate, with the raised drop blade residing therebetween. When the wings are normal to the back plate, the drop blade can be secured in a lowered, horizontal position; in this position, the drop blade acts as the bottom of a loading bucket, the sides being formed by the wings and the back plate. A float mechanism allows the pusher/bucket to push material across uneven terrain, and is preferably disabled when the pusher/bucket is configured as a bucket for loading and dumping material.
    Type: Grant
    Filed: May 12, 2004
    Date of Patent: April 22, 2008
    Assignee: Ralph L. Osgood, Inc.
    Inventors: Kevin R. Osgood, James H. Davis, David J. Smith, Sr.
  • Patent number: D556656
    Type: Grant
    Filed: December 12, 2006
    Date of Patent: December 4, 2007
    Inventor: James H Davis