Patents by Inventor Zahid Asif
Zahid Asif 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: 20230250292Abstract: The present invention is a method of making 1,4,5,8-tetrakis(R-phenylamino)anthracene-9,10-dione (where R is H or a hydrocarbyl group) comprising the step of contacting 1,4,5,8-tetrachloroanthraquinone with a mixture of R-anilines comprising at least two different R groups, under conditions to produce 1,4,5,8-tetrakis(R-phenylamino)anthracene-9,10-dione. The present disclosure also provides a reaction mixture of 1,4,5,8-tetrakis(R-phenylamino)anthracene-9,10-dione characterized by having the R groups on at least 75% of the 1,4,5,8-tetrakis(R-amino)anthracene-9,10-dione molecules in the mixture be comprised of 2 or more different R groups.Type: ApplicationFiled: July 19, 2021Publication date: August 10, 2023Inventors: Evelyn Auyeung, Robert J. Wright, Brian A. Jazdzewski, Nicole Knight, Zahid Asif, Warren E. Smith
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Patent number: 11326114Abstract: A method for marking a petroleum hydrocarbon or a liquid biologically derived fuel; said method comprising adding to said petroleum hydrocarbon or liquid biologically derived fuel at least one compound that is a R1, R2, R3, R4, R5, R6, R7, R8, R9 and R10-substituted diaryl ether, wherein R1, R2, R3, R4, R5, R6, R7, R8, R9 and R10 independently are hydrogen, hydrocarbyl or hydrocarbyloxy; wherein each compound having formula (I) is present at a level from 0.01 ppm to 20 ppm.Type: GrantFiled: March 25, 2019Date of Patent: May 10, 2022Assignees: DOW GLOBAL TECHNOLOGIES LLC, ROHM AND HAAS COMPANYInventors: Robert J. Wright, Brian A. Jazdzewski, Warren E. Smith, Jeremy Chris Reyes, Zahid Asif, Clark H. Cummins, William L. Winniford
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Patent number: 11274258Abstract: A method for marking a petroleum hydrocarbon or a liquid biologically derived fuel; said method comprising adding to said petroleum hydrocarbon or liquid biologically derived fuel at least one compound that is a R1, R2, R3, R4, R5, R6, R7 and R8—substituted dibenzofuran, wherein R1, R2, R3, R4, R5, R6, R7 and R8 independently are hydrogen, hydrocarbyl, hydrocarbyloxy, aryl or aryloxy; provided that R1, R2, R3, R4, R5, R6, R7 and R8 collectively have at least two carbon atoms; wherein each compound having formula (I) is present at a level from 0.01 ppm to 20 ppm.Type: GrantFiled: March 25, 2019Date of Patent: March 15, 2022Assignees: DOW GLOBAL TECHNOLOGIES LLC, ROHM AND HAAS COMPANYInventors: Robert J. Wright, Brian A. Jazdzewski, Warren E. Smith, Jeremy Chris Reyes, Zahid Asif, Clark H. Cummins, William L. Winniford
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Patent number: 11149222Abstract: A method for marking a petroleum hydrocarbon or a liquid biologically derived fuel; said method comprising adding to said petroleum hydrocarbon or liquid biologically derived fuel at least one compound that is a R1, R2, R3, R4, R5, R6, R7, R8, R9 and R10-substituted xanthene, wherein R1, R2, R3, R4, R5, R6, R7, R8, R9 and R10 independently are hydrogen, hydrocarbyl, hydrocarbyloxy, aryl or aryloxy; wherein each compound of formula (I) is present at a level from 0.01 ppm to 20 ppm.Type: GrantFiled: March 25, 2019Date of Patent: October 19, 2021Assignees: DOW GLOBAL TECHNOLOGIES LLC, ROHM AND HAAS COMPANYInventors: Robert J. Wright, Brian A. Jazdzewski, Warren E. Smith, Jeremy Chris Reyes, Zahid Asif, Clark H. Cummins, William L. Winniford
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Publication number: 20210163834Abstract: A method for marking a petroleum hydrocarbon or a liquid biologically derived fuel; said method comprising adding to said petroleum hydrocarbon or liquid biologically derived fuel at least one compound that is a R1, R2, R3, R4, R5, R6, R7 and R8—substituted dibenzofuran, wherein R1, R2, R3, R4, R5, R6, R7 and R8 independently are hydrogen, hydrocarbyl, hydrocarbyloxy, aryl or aryloxy; provided that R1, R2, R3, R4, R5, R6, R7 and R8 collectively have at least two carbon atoms; wherein each compound having formula (I) is present at a level from 0.01 ppm to 20 ppm.Type: ApplicationFiled: March 25, 2019Publication date: June 3, 2021Inventors: Robert J. Wright, Brian A. Jazdzewski, Warren E. Smith, Jeremy Chris Reyes, Zahid Asif, Clark H. Cummins, William L. Winniford
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Publication number: 20210009910Abstract: A method for marking a petroleum hydrocarbon or a liquid biologically derived fuel; said method comprising adding to said petroleum hydrocarbon or liquid biologically derived fuel at least one compound that is a R1, R2, R3, R4, R5, R6, R7, R8, R9 and R10-substituted diaryl ether, wherein R1, R2, R3, R4, R5, R6, R7, R8, R9 and R10 independently are hydrogen, hydrocarbyl or hydrocarbyloxy; wherein each compound having formula (I) is present at a level from 0.01 ppm to 20 ppm.Type: ApplicationFiled: March 25, 2019Publication date: January 14, 2021Inventors: Robert J. Wright, Brian A. Jazdzewski, Warren E. Smith, Jeremy Chris Reyes, Zahid Asif, Clark H. Cummins, William L. Winniford
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Publication number: 20210009909Abstract: A method for marking a petroleum hydrocarbon or a liquid biologically derived fuel; said method comprising adding to said petroleum hydrocarbon or liquid biologically derived fuel at least one compound that is a R1, R2, R3, R4, R5, R6, R7 , R8, R9 and R10-substituted xanthene, wherein R1, R2, R3, R4, R5, R6, R7, R8, R9 and R10 independently are hydrogen, hydrocarbyl, hydrocarbyloxy, aryl or aryloxy; wherein each compound of formula (I) is present at a level from 0.01 ppm to 20 ppm.Type: ApplicationFiled: March 25, 2019Publication date: January 14, 2021Inventors: Robert J. Wright, Brian A. Jazdzewski, Warren E. Smith, Jeremy Chris Reyes, Zahid Asif, Clark H. Cummins, William L. Winniford
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Patent number: 10513594Abstract: The present invention provides aqueous polymer compositions containing one or more, or, preferably, two or more markers selected from a C1-C12 alkyl phenyl ether having a formula Ph(R2)m(OR1)n, wherein Ph is an aromatic ring containing group having from six to nine carbon atoms, R1 is a C1-C12 alkyl group, R2 is a C1-C12 alkyl group, m is an integer of from 0 to 5, n is an integer of from 1 to 3, and (m+n) is an integer of from 1 to 6. The markers are readily detectable, such as by mass spectroscopy, upon solvent extraction and separation from the aqueous polymer compositions, or from dried or cured coatings, film or layers thereof.Type: GrantFiled: October 20, 2017Date of Patent: December 24, 2019Assignees: Dow Global Technologies LLC, Rohm and Haas CompanyInventors: Peilin Yang, Eric C. Greyson, Zhenwen Fu, Zahid Asif
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Patent number: 10414899Abstract: The present invention provides aqueous polymer compositions containing one or more, or, preferably, two or more triphenylmethyl alkyl aryl ether markers having a formula (Ph3C)mAr(OR)n, wherein Ph is a phenyl group, Ar is an aromatic ring containing group having from six to twenty carbon atoms, R is a C1-C18 alkyl group, m is an integer of from 1 to 2, and n is an integer of from 1 to 4. The markers are readily detectable, such as by mass spectroscopy, upon solvent extraction and separation from the aqueous polymer compositions, or from dried or cured coatings, film or layers thereof.Type: GrantFiled: October 20, 2017Date of Patent: September 17, 2019Assignees: Dow Global Technologies LLC, Rohm and Haas CompanyInventors: Zahid Asif, Zhenwen Fu, Eric C. Greyson, Peilin Yang
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Publication number: 20180148565Abstract: The present invention provides aqueous polymer compositions containing one or more, or, preferably, two or more triphenylmethyl alkyl aryl ether markers having a formula (Ph3C)mAr(OR)n, wherein Ph is a phenyl group, Ar is an aromatic ring containing group having from six to twenty carbon atoms, R is a C1-C18 alkyl group, m is an integer of from 1 to 2, and n is an integer of from 1 to 4. The markers are readily detectable, such as by mass spectroscopy, upon solvent extraction and separation from the aqueous polymer compositions, or from dried or cured coatings, film or layers thereof.Type: ApplicationFiled: October 20, 2017Publication date: May 31, 2018Inventors: Zahid Asif, Zhenwen Fu, Eric C. Greyson, Peilin Yang
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Publication number: 20180148564Abstract: The present invention provides aqueous polymer compositions containing one or more, or, preferably, two or more markers selected from a C1-C12 alkyl phenyl ether having a formula Ph(R2)m(OR1)r, wherein Ph is an aromatic ring containing group having from six to nine carbon atoms, R1 is a C1-C12 alkyl group, R2 is a C1-C12 alkyl group, m is an integer of from 0 to 5, n is an integer of from 1 to 3, and (m+n) is an integer of from 1 to 6. The markers are readily detectable, such as by mass spectroscopy, upon solvent extraction and separation from the aqueous polymer compositions, or from dried or cured coatings, film or layers thereof.Type: ApplicationFiled: October 20, 2017Publication date: May 31, 2018Inventors: Peilin Yang, Eric C. Greyson, Zhenwen Fu, Zahid Asif