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).
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Patent number: 9901863Abstract: 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: GrantFiled: November 14, 2014Date of Patent: February 27, 2018Assignees: Chevron U.S.A. Inc., University of South AlabamaInventors: Daniel Chinn, Russell Evan Cooper, Zunqing He, James H. Davis, Jr., Kevin N. West, Hye Kyung Timken, Michael S. Driver
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Patent number: 9751044Abstract: 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: GrantFiled: September 30, 2015Date of Patent: September 5, 2017Assignees: Chevron U.S.A. Inc., University of South AlabamaInventors: Daniel Chinn, Rusell Evan Cooper, Zunqing He, James H. Davis, Jr., Kevin N. West, Hye Kyung Timken, Michael S. Driver
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Publication number: 20160016112Abstract: 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: ApplicationFiled: September 30, 2015Publication date: January 21, 2016Inventors: Daniel Chinn, Rusell Evan Cooper, Zunqing He, James H. Davis, JR., Kevin N. West, Hye Kyung Timken, Michael S. Driver
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Patent number: 9205371Abstract: 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: GrantFiled: December 23, 2011Date of Patent: December 8, 2015Assignees: Chevron U.S.A. Inc., University of South AlabamaInventors: Russell Evan Cooper, Daniel Chinn, Zunqing He, Hye Hyung Timken, Michael S. Driver, James H. Davis, Jr., Kevin N. West
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Patent number: 9180403Abstract: 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: GrantFiled: December 30, 2010Date of Patent: November 10, 2015Assignees: Chevron U.S.A. Inc., University of South AlabamaInventors: Daniel Chinn, Russell Evan Cooper, Zunqing He, James H. Davis, Jr., Kevin N. West, Hye Kyung Timken, Michael S. Driver
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Publication number: 20150068398Abstract: 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: ApplicationFiled: November 14, 2014Publication date: March 12, 2015Inventors: Daniel Chinn, Russell Evan Cooper, Zunqing He, James H. Davis, JR., Kevin N. West, Hye Kyung Timken, Michael S. Driver
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Patent number: 8952193Abstract: 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: GrantFiled: September 17, 2013Date of Patent: February 10, 2015Assignee: University of South AlabamaInventor: James H. Davis, Jr.
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Patent number: 8911539Abstract: 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: GrantFiled: December 30, 2010Date of Patent: December 16, 2014Assignees: Chevron U.S.A. Inc., University of South AlabamaInventors: Daniel Chinn, Russell Evan Cooper, Zunqing He, James H. Davis, Jr., Kevin N. West, Hye Kyung Timken, Michael S. Driver
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Publication number: 20140170054Abstract: 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: ApplicationFiled: September 17, 2013Publication date: June 19, 2014Applicant: University of South AlabamaInventor: James H. Davis, JR.
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Patent number: 8674135Abstract: 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: GrantFiled: February 26, 2010Date of Patent: March 18, 2014Assignee: University of South AlabamaInventor: James H. Davis, Jr.
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Patent number: 8536371Abstract: 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: GrantFiled: April 2, 2008Date of Patent: September 17, 2013Assignee: University of South AlabamaInventor: James H. Davis, Jr.
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Publication number: 20120171094Abstract: 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: ApplicationFiled: December 30, 2010Publication date: July 5, 2012Applicants: 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
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Publication number: 20120167766Abstract: 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: ApplicationFiled: December 30, 2010Publication date: July 5, 2012Applicants: 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
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Patent number: 7750166Abstract: 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: GrantFiled: August 15, 2003Date of Patent: July 6, 2010Assignees: University of South Alabama, Sachem, Inc.Inventors: Roger Moulton, James H. Davis, Jr.
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Patent number: 7744838Abstract: 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: GrantFiled: April 24, 2007Date of Patent: June 29, 2010Assignee: University of South AlabamaInventor: James H. Davis, Jr.
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Publication number: 20100150804Abstract: 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: ApplicationFiled: April 2, 2008Publication date: June 17, 2010Applicant: University of South AlabamaInventor: James H. Davis, JR.
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Patent number: 7709635Abstract: 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: GrantFiled: May 19, 2006Date of Patent: May 4, 2010Assignee: University of South AlabamaInventor: James H. Davis, Jr.
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Publication number: 20090200513Abstract: 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: ApplicationFiled: March 13, 2009Publication date: August 13, 2009Applicants: University of South Alabama, Sachem, Inc.Inventors: Roger Moulton, James H. Davis, JR.
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Patent number: 7360327Abstract: 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: GrantFiled: May 12, 2004Date of Patent: April 22, 2008Assignee: Ralph L. Osgood, Inc.Inventors: Kevin R. Osgood, James H. Davis, David J. Smith, Sr.
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Patent number: D556656Type: GrantFiled: December 12, 2006Date of Patent: December 4, 2007Inventor: James H Davis