Patents by Inventor Darren Makeiff

Darren 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).

  • Phase selective gelation with alkylated aromatic acid compounds
    Patent number: 9623345
    Abstract: Disclosed is a process which comprises mixing an alkylated aromatic acid with a mixture comprising a first liquid and a second liquid, thereby causing formation of an organogel comprising the alkylated aromatic acid and the first liquid.
    Type: Grant
    Filed: December 15, 2011
    Date of Patent: April 18, 2017
    Assignees: XEROX CORPORATION, NATIONAL RESEARCH COUNCIL OF CANADA
    Inventors: Darren A. Makeiff, Rina Carlini
  • Carrier resins with improved relative humidity sensitivity
    Patent number: 9069275
    Abstract: The disclosure generally describes carrier resins, and in particular, resins used for carrier coatings which include at least one ester functional group and at least one cyclic aliphatic group containing at least one nitrogen atom in the cyclic ring structure. Carriers having such resins in the coating exhibit high charge and excellent relative humidity (RH) sensitivity of charge to changing environmental conditions.
    Type: Grant
    Filed: April 3, 2013
    Date of Patent: June 30, 2015
    Assignees: XEROX CORPORATION, NATIONAL RESEARCH COUNCIL OF CANADA
    Inventors: Richard P. Veregin, Qingbin Li, Andriy Kovalenko, Sergey Gusarov, Darren Makeiff, Valerie Farrugia, Michael S. Hawkins
  • Organogel compositions comprising alkylated aromatic acids
    Patent number: 9067878
    Abstract: Disclosed is a composition comprising an organogel which comprises: (a) an alkylated aromatic acid compound of the formula or mixtures thereof, wherein R1, R2, R3, R4, and R5 each, independently of the other, are hydrogen, alkyl, aryl, arylalkyl, or alkyl, provided that at least one of R1, R2, R3, R4, and R5 is —X—Rc, wherein —X— is a linking group between Rc and the aromatic group and Rc is alkyl; and (b) an organic liquid.
    Type: Grant
    Filed: December 15, 2011
    Date of Patent: June 30, 2015
    Assignee: Xerox Corporation
    Inventors: Darren A. Makeiff, Rina Carlini
  • Organogel compositions comprising alkylated benzimidazolones
    Patent number: 9017701
    Abstract: Disclosed is a composition comprising an organogel which comprises: (a) an alkylated benzimidazolone compound; and (b) an organic liquid.
    Type: Grant
    Filed: November 10, 2011
    Date of Patent: April 28, 2015
    Assignees: Xerox Corporation, National Research Council of Canada
    Inventors: Darren A. Makeiff, Rina Carlini
  • CARRIER RESINS WITH IMPROVED RELATIVE HUMIDITY SENSITIVITY
    Publication number: 20140302435
    Abstract: The disclosure generally describes carrier resins, and in particular, resins used for carrier coatings which include at least one ester functional group and at least one cyclic aliphatic group containing at least one nitrogen atom in the cyclic ring structure. Carriers having such resins in the coating exhibit high charge and excellent relative humidity (RH) sensitivity of charge to changing environmental conditions.
    Type: Application
    Filed: April 3, 2013
    Publication date: October 9, 2014
    Applicants: National Research Council of Canada ("NRC"), XEROX CORPORATION
    Inventors: RICHARD P. VEREGIN, Qingbin Li, Andriy Kovalenko, Sergey Gusarov, Darren Makeiff, Valerie Farrugia, Michael S. Hawkins
  • Phase Selective Gelation With Alkylated Aromatic Acid Compounds
    Publication number: 20130153508
    Abstract: Disclosed is a process which comprises mixing an alkylated aromatic acid with a mixture comprising a first liquid and a second liquid, thereby causing formation of an organogel comprising the alkylated aromatic acid and the first liquid.
    Type: Application
    Filed: December 15, 2011
    Publication date: June 20, 2013
    Applicants: NATIONAL RESEARCH COUNCIL OF CANADA, XEROX CORPORATION
    Inventors: Darren A. Makeiff, Rina Carlini
  • Organogel Compositions Comprising Alkylated Aromatic Acids
    Publication number: 20130158135
    Abstract: Disclosed is a composition comprising an organogel which comprises: (a) an alkylated aromatic acid compound of the formula or mixtures thereof, wherein R1, R2, R3, R4, and R5 each, independently of the other, are hydrogen, alkyl, aryl, arylalkyl, or alkyl, provided that at least one of R1, R2, R3, R4, and R5 is —X—Rc, wherein —X— is a linking group between Rc and the aromatic group and Rc is alkyl; and (b) an organic liquid.
    Type: Application
    Filed: December 15, 2011
    Publication date: June 20, 2013
    Applicants: NATIONAL RESEARCH COUNCIL OF CANADA, XEROX CORPORATION
    Inventors: Darren A. Makeiff, Rina Carlini
  • Organogel Compositions Comprising Alkylated Benzimidazolones
    Publication number: 20130123375
    Abstract: Disclosed is a composition comprising an organogel which comprises: (a) an alkylated benzimidazolone compound; and (b) an organic liquid.
    Type: Application
    Filed: November 10, 2011
    Publication date: May 16, 2013
    Applicants: NATIONAL RESEARCH COUNCIL OF CANADA, XEROX CORPORATION
    Inventors: Darren A. Makeiff, Rina Carlini