Patents by Inventor Avi Koller

Avi Koller 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).

  • Charge director for liquid toner
    Patent number: 9417545
    Abstract: A charge director material for charging a liquid toner, the charge director material comprising (a) nanoparticles of a simple salt and (b) a sulfosuccinate salt of the general formula MAn, wherein M is a metal, n is the valence of M, and A is an ion of the general formula (I) [R1—O—C(O)CH2CH(SO3?)C(O)—O—R2],??(I) wherein each of R1 and R2 is an alkyl group; said charge director material being substantially free of acids of the general formula (I), wherein one or both of R1 and R2 is hydrogen, and if only one of them is hydrogen, the other is an alkyl group.
    Type: Grant
    Filed: February 23, 2016
    Date of Patent: August 16, 2016
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Yaacov Almog, Avi Koller, Elliad Silcoff, Albert Teishev, Yaffa Israeli, Gary Larson, Lufei Lin
  • CHARGE DIRECTOR FOR LIQUID TONER
    Publication number: 20160170320
    Abstract: A charge director material for charging a liquid toner, the charge director material comprising (a) nanoparticles of a simple salt and (b) a sulfosuccinate salt of the general formula MAn, wherein M is a metal, n is the valence of M, and A is an ion of the general formula (I) [R1—O—C(O)CH2CH(SO3?)C(O)—O—R2],??(I) wherein each of R1 and R2 is an alkyl group; said charge director material being substantially free of acids of the general formula (I), wherein one or both of R1 and R2 is hydrogen, and if only one of them is hydrogen, the other is an alkyl group,
    Type: Application
    Filed: February 23, 2016
    Publication date: June 16, 2016
    Inventors: Yaacov Almog, Avi Koller, Elliad Silcoff, Albert Teishev, Yaffa Israeli, Gary Larson, Lufei Lin
  • Charge director for liquid toner
    Patent number: 9353267
    Abstract: A charge director material for charging a liquid toner, the charge director material comprising (a) nanoparticles of a simple salt and (b) a sulfosuccinate salt of the general formula MAn, wherein M is a metal, n is the valence of M, and A is an ion of the general formula (I) [R1—O—C(O)CH2CH(SO3?)C(O)—O—R2],??(I) wherein each of R1 and R2 is an alkyl group; said charge director material being substantially free of acids of the general formula (I), wherein one or both of R1 and R2 is hydrogen, and if only one of them is hydrogen, the other is an alkyl group.
    Type: Grant
    Filed: September 27, 2011
    Date of Patent: May 31, 2016
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Yaacov Almog, Avi Koller, Elliad Silcoff, Albert Teishev, Yaffa Israeli, Gary Larson, Lufei Lin
  • Method of charging toner particles
    Patent number: 8221952
    Abstract: A method of charging toner particles in a liquid toner includes mixing the toner with an acid, and mixing the toner with a base that reacts with the acid to charge the toner particles. The base is added first and the acid subsequently to charge the toner particles with a positive charge.
    Type: Grant
    Filed: July 8, 2011
    Date of Patent: July 17, 2012
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Yaacov Almog, Avi Koller, Ilya Taraniuk
  • CHARGE DIRECTOR FOR LIQUID TONER
    Publication number: 20120018683
    Abstract: A charge director material for charging a liquid toner, the charge director material comprising (a) nanoparticles of a simple salt and (b) a sulfosuccinate salt of the general formula MAn, wherein M is a metal, n is the valence of M, and A is an ion of the general formula (I) [R1—O—C(O)CH2CH(SO3?)C(O)—O—R2],??(I) wherein each of R1 and R2 is an alkyl group; said charge director material being substantially free of acids of the general formula (I), wherein one or both of R1 and R2 is hydrogen, and if only one of them is hydrogen, the other is an alkyl group,
    Type: Application
    Filed: September 27, 2011
    Publication date: January 26, 2012
    Inventors: Yaacov Almog, Avi Koller, Elliad Silcoff, Albert Teishev, Yaffa Israell, Gary Larson, Lufei Lin
  • METHOD OF CHARGING TONER PARTICLES
    Publication number: 20110269069
    Abstract: A method of charging toner particles in a liquid toner includes mixing the toner with an acid, and mixing the toner with a base that reacts with the acid to charge the toner particles. The base is added first and the acid subsequently to charge the toner particles with a positive charge.
    Type: Application
    Filed: July 8, 2011
    Publication date: November 3, 2011
    Inventors: Yaacov Almog, Avi Koller, Ilya Taraniuk
  • Method for charging toner particles
    Patent number: 8029963
    Abstract: A charge adjuvant for promoting charging of toner particles comprising a dielectric carrier liquid; and an organic aluminum salt dissolved in the liquid, said organic aluminum salt being soluble in the carrier liquid at room temperature is disclosed. Also disclosed are solutions of the charge adjuvant with a charge director, a method of producing toner utilizing the charge adjuvant and a liquid toner.
    Type: Grant
    Filed: June 6, 2005
    Date of Patent: October 4, 2011
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Yaacov Almog, Avi Koller, Yaffa Israeli
  • Method of charging toner particles
    Patent number: 8003291
    Abstract: A method of charging toner particles in a liquid toner comprising: mixing the toner with an acid; and mixing the toner with a base that reacts with the acid to charge the toner particles.
    Type: Grant
    Filed: March 20, 2007
    Date of Patent: August 23, 2011
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Yaacov Almog, Avi Koller, Ilya Taraniuk
  • Charge Director for Liquid Toner
    Publication number: 20090311614
    Abstract: A charge director material for charging a liquid toner, the charge director material comprising (a) nanoparticles of a simple salt and (b) a sulfosuccinate salt of the general formula MAn, wherein M is a metal, n is the valence of M, and A is an ion of the general formula (I) [R1—O—C(O)CH2CH(SO3?)C(O)—O—R2],??(I) wherein each of R1 and R2 is an alkyl group; said charge director material being substantially free of acids of the general formula (I), wherein one or both of R1 and R2 is hydrogen, and if only one of them is hydrogen, the other is an alkyl group,
    Type: Application
    Filed: May 10, 2006
    Publication date: December 17, 2009
    Applicant: Hewlett-Packard Development Company, L.P.
    Inventors: Yaacov Almog, Avi Koller, Elliad Silcoff, Albert Teishev, Yaffa Israeli, Gary Larson, Lufei Lin
  • Method for charging toner particles
    Publication number: 20090220884
    Abstract: A charge adjuvant for promoting charging of toner particles comprising a dielectric carrier liquid; and an organic aluminum salt dissolved in the liquid, said organic aluminum salt being soluble in the carrier liquid at room temperature is disclosed. Also disclosed are solutions of the charge adjuvant with a charge director, a method of producing toner utilizing the charge adjuvant and a liquid toner.
    Type: Application
    Filed: June 6, 2005
    Publication date: September 3, 2009
    Inventors: Yaacov Almog, Avi Koller, Yaffa Israeli
  • Method of Charging Toner Particles
    Publication number: 20080063973
    Abstract: A method of charging toner particles in a liquid toner comprising: mixing the toner with an acid; and mixing the toner with a base that reacts with the acid to charge the toner particles.
    Type: Application
    Filed: March 20, 2007
    Publication date: March 13, 2008
    Inventors: Yaacov Almog, Avi Koller, Ilya Taraniuk