Patents by Inventor Darren Andrew Makeiff
Darren Andrew Makeiff 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: 8703988Abstract: Nanostructures are formed from alkylated derivatives of aromatic acids of the formula: wherein at least one of R1 to R6 represents a carboxylic acid group, a primary amide group, an ester group, an amidine group, or a salt thereof, at least one other of R1 to R6 is X—Rc, and the remaining of R1 to R6 independently represent H or substituted or unsubstituted organic groups; X represents a linking group; and Rc represents a substituted or unsubstituted alkyl group.Type: GrantFiled: June 22, 2010Date of Patent: April 22, 2014Assignees: Xerox Corporation, National Research Council of CanadaInventors: Darren Andrew Makeiff, Rina Carlini
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Patent number: 8461351Abstract: A sterically bulky stabilizer that includes an alkylated-benzimidazolone compound, where the sterically bulky stabilizer is associated non-covalently with a benzimidazolone pigment, and the presence of the sterically bulky stabilizer limits the extent of particle growth and aggregation, to afford nanoscale pigment particles.Type: GrantFiled: July 28, 2011Date of Patent: June 11, 2013Assignees: Xerox Corporation, National Research Council of CanadaInventors: Rina Carlini, Darren Andrew Makeiff
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Patent number: 8455654Abstract: A nanoscale pigment particle composition includes an organic benzimidazolone pigment, and a sterically bulky stabilizer compound, wherein the benzimidazolone pigment associates non-covalently with the sterically bulky stabilizer compound that is a substituted pyridine derivative; and the presence of the associated stabilizer limits the extent of particle growth and aggregation, to afford nanoscale pigment particles.Type: GrantFiled: July 18, 2011Date of Patent: June 4, 2013Assignees: Xerox Corporation, National Research Council of CanadaInventors: Rina Carlini, Darren Andrew Makeiff
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Patent number: 8426636Abstract: A sterically bulky stabilizer that is associated non-covalently with a benzimidazolone pigment. The sterically bulky stabilizer compound includes an aromatic acid derivative, and the presence of the sterically bulky stabilizer limits an extent of particle growth and aggregation, to afford nanoscale pigment particles.Type: GrantFiled: July 25, 2011Date of Patent: April 23, 2013Assignees: Xerox Corporation, National Research Council of CanadaInventors: Rina Carlini, Darren Andrew Makeiff
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Patent number: 8362270Abstract: An alkylated benzimidazolone compound of the formula: wherein at least one of R1 to R4 is X—Rc, where X represents a linking group, and Ra, Rb, and Rc independently represents substituted or unsubstituted alkyl groups, provided that at least one of Ra and Rb represents H. The present disclosure provides alkylated benzimidazolone compounds and self-assembled nanostructures formed from alkylated benzimidazolone compounds.Type: GrantFiled: May 11, 2010Date of Patent: January 29, 2013Assignees: Xerox Corporation, National Research Council of CanadaInventors: Darren Andrew Makeiff, Rina Carlini, Hicham Fenniri
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Publication number: 20110311813Abstract: Nanostructures are formed from alkylated derivatives of aromatic acids of the formula: wherein at least one of R1 to R6 represents a carboxylic acid group, a primary amide group, an ester group, an amidine group, or a salt thereof, at least one other of R1 to R6 is X—Rc, and the remaining of R1 to R6 independently represent H or substituted or unsubstituted organic groups; X represents a linking group; and Rc represents a substituted or unsubstituted alkyl group.Type: ApplicationFiled: June 22, 2010Publication date: December 22, 2011Applicants: NATIONAL RESEARCH COUNCIL OF CANADA, XEROX CORPORATIONInventors: Darren Andrew MAKEIFF, Rina Carlini
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Publication number: 20110303122Abstract: A sterically bulky stabilizer that includes an alkylated-benzimidazolone compound, where the sterically bulky stabilizer is associated non-covalently with a benzimidazolone pigment, and the presence of the sterically bulky stabilizer limits the extent of particle growth and aggregation, to afford nanoscale pigment particles.Type: ApplicationFiled: July 28, 2011Publication date: December 15, 2011Applicants: NATIONAL RESEARCH COUNCIL OF CANADA, XEROX CORPORATIONInventors: Rina CARLINI, Darren Andrew Makeiff
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Publication number: 20110282072Abstract: An alkylated benzimidazolone compound of the formula: wherein at least one of R1 to R4 is X—Rc, where X represents a linking group, and Ra, Rb, and Rc independently represents substituted or unsubstituted alkyl groups, provided that at least one of Ra and Rb represents H. The present disclosure provides alkylated benzimidazolone compounds and self-assembled nanostructures formed from alkylated benzimidazolone compounds.Type: ApplicationFiled: May 11, 2010Publication date: November 17, 2011Applicants: NATIONAL RESEARCH COUNCIL OF CANADA, XEROX CORPORATIONInventors: Darren Andrew MAKEIFF, Rina Carlini, Hicham Fenniri
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Publication number: 20110277668Abstract: A sterically bulky stabilizer that is associated non-covalently with a benzimidazolone pigment. The sterically bulky stabilizer compound includes an aromatic acid derivative, and the presence of the sterically bulky stabilizer limits an extent of particle growth and aggregation, to afford nanoscale pigment particles.Type: ApplicationFiled: July 25, 2011Publication date: November 17, 2011Applicants: NATIONAL RESEARCH COUNCIL OF CANADA, XEROX CORPORATIONInventors: Rina CARLINI, Darren Andrew Makeiff
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Publication number: 20110271874Abstract: A nanoscale pigment particle composition includes an organic benzimidazolone pigment, and a sterically bulky stabilizer compound, wherein the benzimidazolone pigment associates non-covalently with the sterically bulky stabilizer compound that is a substituted pyridine derivative; and the presence of the associated stabilizer limits the extent of particle growth and aggregation, to afford nanoscale pigment particles.Type: ApplicationFiled: July 18, 2011Publication date: November 10, 2011Applicants: NATIONAL RESEARCH COUNCIL OF CANADA, XEROX CORPORATIONInventors: Rina CARLINI, Darren Andrew Makeiff
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Patent number: 8012254Abstract: A nanoscale pigment particle composition includes an organic benzimidazolone pigment, and a sterically bulky stabilizer compound, wherein the benzimidazolone pigment associates non-covalently with the sterically bulky stabilizer compound that is a substituted pyridine derivative; and the presence of the associated stabilizer limits the extent of particle growth and aggregation, to afford nanoscale pigment particles.Type: GrantFiled: October 19, 2009Date of Patent: September 6, 2011Assignees: Xerox Corporation, National Research Council of CanadaInventors: Rina Carlini, Darren Andrew Makeiff
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Patent number: 7938903Abstract: A nanoscale pigment particle composition includes an organic benzimidazolone pigment, and a sterically bulky stabilizer compound, wherein the benzimidazolone pigment associates non-covalently with the sterically bulky stabilizer compound that is an alkylated-benzimidazolone compound; and the presence of the associated stabilizer limits the extent of particle growth and aggregation, to afford nanoscale pigment particles.Type: GrantFiled: October 19, 2009Date of Patent: May 10, 2011Assignees: Xerox Corporation, National Research Council of CanadaInventors: Rina Carlini, Darren Andrew Makeiff
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Patent number: 7905954Abstract: A nanoscale pigment particle composition includes an organic benzimidazolone pigment, and a sterically bulky stabilizer compound, wherein the benzimidazolone pigment associates non-covalently with the sterically bulky stabilizer compound that is an alkylated derivative of an aromatic acid; and the presence of the associated stabilizer limits the extent of particle growth and aggregation, to afford nanoscale pigment particles.Type: GrantFiled: October 19, 2009Date of Patent: March 15, 2011Assignees: Xerox Corporation, National Research Council of CanadaInventors: Rina Carlini, Darren Andrew Makeiff
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Patent number: 7883574Abstract: Nanoscale particles of benzimidazolone pigments are made by providing one or more organic pigment precursor(s) to a benzimidazolone pigment, providing a solution or suspension of a sterically bulky stabilizer compound that associates non-covalently with a benzimidazolone moiety on one of the pigment precursors, wherein the sterically bulky stabilizer compound is selected from the group consisting of substituted pyridine derivatives, alkylated benzimidazolone compounds, alkylated derivatives of aromatic acids, and mixtures thereof, and carrying out a coupling reaction to form a benzimidazolone pigment composition, whereby one or more functional moieties on the benzimidazolone pigment is non-covalently associated with the sterically bulky stabilizer, so as to limit an extent of particle growth and aggregation and results in nanoscale pigment particles.Type: GrantFiled: July 24, 2009Date of Patent: February 8, 2011Assignee: Xerox CorporationInventors: Rina Carlini, Darren Andrew Makeiff
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Publication number: 20100104963Abstract: A nanoscale pigment particle composition includes an organic benzimidazolone pigment, and a sterically bulky stabilizer compound, wherein the benzimidazolone pigment associates non-covalently with the sterically bulky stabilizer compound that is a substituted pyridine derivative; and the presence of the associated stabilizer limits the extent of particle growth and aggregation, to afford nanoscale pigment particles.Type: ApplicationFiled: October 19, 2009Publication date: April 29, 2010Applicants: XEROX CORPORATION, NATIONAL RESEARCH COUNCIL OF CANADAInventors: Rina CARLINI, Darren Andrew MAKEIFF
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Publication number: 20100037955Abstract: A nanoscale pigment particle composition includes an organic benzimidazolone pigment, and a sterically bulky stabilizer compound, wherein the benzimidazolone pigment associates non-covalently with the sterically bulky stabilizer compound that is an alkylated derivative of an aromatic acid; and the presence of the associated stabilizer limits the extent of particle growth and aggregation, to afford nanoscale pigment particles.Type: ApplicationFiled: October 19, 2009Publication date: February 18, 2010Applicants: XEROX CORPORATION, NATIONAL RESEARCH COUNCIL OF CANADAInventors: Rina CARLINI, Darren Andrew MAKEIFF
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Publication number: 20100035172Abstract: A nanoscale pigment particle composition includes an organic benzimidazolone pigment, and a sterically bulky stabilizer compound, wherein the benzimidazolone pigment associates non-covalently with the sterically bulky stabilizer compound that is an alkylated-benzimidazolone compound; and the presence of the associated stabilizer limits the extent of particle growth and aggregation, to afford nanoscale pigment particles.Type: ApplicationFiled: October 19, 2009Publication date: February 11, 2010Applicants: XEROX CORPORATION, NATIONAL RESEARCH COUNCIL OF CANADAInventors: Rina CARLINI, Darren Andrew MAKEIFF
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Publication number: 20100004360Abstract: Nanoscale particles of benzimidazolone pigments are made by providing one or more organic pigment precursor(s) to a benzimidazolone pigment, providing a solution or suspension of a sterically bulky stabilizer compound that associates non-covalently with a benzimidazolone moiety on one of the pigment precursors, wherein the sterically bulky stabilizer compound is selected from the group consisting of substituted pyridine derivatives, alkylated benzimidazolone compounds, alkylated derivatives of aromatic acids, and mixtures thereof, and carrying out a coupling reaction to form a benzimidazolone pigment composition, whereby one or more functional moieties on the benzimidazolone pigment is non-covalently associated with the sterically bulky stabilizer, so as to limit an extent of particle growth and aggregation and results in nanoscale pigment particles.Type: ApplicationFiled: July 24, 2009Publication date: January 7, 2010Applicants: XEROX CORPORATION, NATIONAL RESEARCH COUNCIL OF CANADAInventors: Rina CARLINI, Darren Andrew MAKEIFF