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).

  • Patent number: 8703988
    Abstract: 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: Grant
    Filed: June 22, 2010
    Date of Patent: April 22, 2014
    Assignees: Xerox Corporation, National Research Council of Canada
    Inventors: Darren Andrew Makeiff, Rina Carlini
  • Patent number: 8461351
    Abstract: 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: Grant
    Filed: July 28, 2011
    Date of Patent: June 11, 2013
    Assignees: Xerox Corporation, National Research Council of Canada
    Inventors: Rina Carlini, Darren Andrew Makeiff
  • Patent number: 8455654
    Abstract: 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: Grant
    Filed: July 18, 2011
    Date of Patent: June 4, 2013
    Assignees: Xerox Corporation, National Research Council of Canada
    Inventors: Rina Carlini, Darren Andrew Makeiff
  • Patent number: 8426636
    Abstract: 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: Grant
    Filed: July 25, 2011
    Date of Patent: April 23, 2013
    Assignees: Xerox Corporation, National Research Council of Canada
    Inventors: Rina Carlini, Darren Andrew Makeiff
  • Patent number: 8362270
    Abstract: 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: Grant
    Filed: May 11, 2010
    Date of Patent: January 29, 2013
    Assignees: Xerox Corporation, National Research Council of Canada
    Inventors: Darren Andrew Makeiff, Rina Carlini, Hicham Fenniri
  • Publication number: 20110311813
    Abstract: 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: Application
    Filed: June 22, 2010
    Publication date: December 22, 2011
    Applicants: NATIONAL RESEARCH COUNCIL OF CANADA, XEROX CORPORATION
    Inventors: Darren Andrew MAKEIFF, Rina Carlini
  • Publication number: 20110303122
    Abstract: 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: Application
    Filed: July 28, 2011
    Publication date: December 15, 2011
    Applicants: NATIONAL RESEARCH COUNCIL OF CANADA, XEROX CORPORATION
    Inventors: Rina CARLINI, Darren Andrew Makeiff
  • Publication number: 20110282072
    Abstract: 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: Application
    Filed: May 11, 2010
    Publication date: November 17, 2011
    Applicants: NATIONAL RESEARCH COUNCIL OF CANADA, XEROX CORPORATION
    Inventors: Darren Andrew MAKEIFF, Rina Carlini, Hicham Fenniri
  • Publication number: 20110277668
    Abstract: 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: Application
    Filed: July 25, 2011
    Publication date: November 17, 2011
    Applicants: NATIONAL RESEARCH COUNCIL OF CANADA, XEROX CORPORATION
    Inventors: Rina CARLINI, Darren Andrew Makeiff
  • Publication number: 20110271874
    Abstract: 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: Application
    Filed: July 18, 2011
    Publication date: November 10, 2011
    Applicants: NATIONAL RESEARCH COUNCIL OF CANADA, XEROX CORPORATION
    Inventors: Rina CARLINI, Darren Andrew Makeiff
  • Patent number: 8012254
    Abstract: 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: Grant
    Filed: October 19, 2009
    Date of Patent: September 6, 2011
    Assignees: Xerox Corporation, National Research Council of Canada
    Inventors: Rina Carlini, Darren Andrew Makeiff
  • Patent number: 7938903
    Abstract: 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: Grant
    Filed: October 19, 2009
    Date of Patent: May 10, 2011
    Assignees: Xerox Corporation, National Research Council of Canada
    Inventors: Rina Carlini, Darren Andrew Makeiff
  • Patent number: 7905954
    Abstract: 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: Grant
    Filed: October 19, 2009
    Date of Patent: March 15, 2011
    Assignees: Xerox Corporation, National Research Council of Canada
    Inventors: Rina Carlini, Darren Andrew Makeiff
  • Patent number: 7883574
    Abstract: 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: Grant
    Filed: July 24, 2009
    Date of Patent: February 8, 2011
    Assignee: Xerox Corporation
    Inventors: Rina Carlini, Darren Andrew Makeiff
  • Publication number: 20100104963
    Abstract: 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: Application
    Filed: October 19, 2009
    Publication date: April 29, 2010
    Applicants: XEROX CORPORATION, NATIONAL RESEARCH COUNCIL OF CANADA
    Inventors: Rina CARLINI, Darren Andrew MAKEIFF
  • Publication number: 20100037955
    Abstract: 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: Application
    Filed: October 19, 2009
    Publication date: February 18, 2010
    Applicants: XEROX CORPORATION, NATIONAL RESEARCH COUNCIL OF CANADA
    Inventors: Rina CARLINI, Darren Andrew MAKEIFF
  • Publication number: 20100035172
    Abstract: 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: Application
    Filed: October 19, 2009
    Publication date: February 11, 2010
    Applicants: XEROX CORPORATION, NATIONAL RESEARCH COUNCIL OF CANADA
    Inventors: Rina CARLINI, Darren Andrew MAKEIFF
  • Publication number: 20100004360
    Abstract: 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: Application
    Filed: July 24, 2009
    Publication date: January 7, 2010
    Applicants: XEROX CORPORATION, NATIONAL RESEARCH COUNCIL OF CANADA
    Inventors: Rina CARLINI, Darren Andrew MAKEIFF