Patents by Inventor Sarah Jane Vella

Sarah Jane Vella 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).

  • Publication number: 20150212446
    Abstract: There is described an a bias charge roller including an electrically conductive core and an outer layer axially supported on the core. The outer layer includes a continuous raised pattern above a non-contact surface wherein the continuous raised pattern includes a contact surface having a height of from about 10 microns to about 40 microns above the non-contact surface. The outer layer transitions from the contact surface to the non-contact surface over a minimum linear distance of 100 microns or greater. The contact surface is configured to contact a charge-retentive surface of an electrophotographic imaging member so as to charge the charge-retentive surface.
    Type: Application
    Filed: January 30, 2014
    Publication date: July 30, 2015
    Applicant: Xerox Corporation
    Inventors: Gregory Michael McGuire, Yu Liu, Johann Junginger, Vladislav Skorokhod, Sarah Jane Vella, Simon C. Burke
  • Patent number: 9075332
    Abstract: There is described an a bias charge roller including an electrically conductive core and an outer layer axially supported on the core. The outer layer includes a continuous raised pattern above a non-contact surface wherein the continuous raised pattern includes a contact surface having a height of from about 10 microns to about 40 microns above the non-contact surface. The outer layer transitions from the contact surface to the non-contact surface over a minimum linear distance of 100 microns or greater. The contact surface is configured to contact a charge-retentive surface of an electrophotographic imaging member so as to charge the charge-retentive surface.
    Type: Grant
    Filed: January 30, 2014
    Date of Patent: July 7, 2015
    Assignee: Xerox Corporation
    Inventors: Gregory Michael McGuire, Yu Liu, Johann Junginger, Vladislav Skorokhod, Sarah Jane Vella, Simon C. Burke
  • Publication number: 20140121096
    Abstract: A method of rendering a substrate catalytic to electroless metal deposition comprising the steps of: (a) depositing a ligating chemical agent on the substrate, which is capable of both binding to the substrate and ligating to an electroless plating catalyst; and (b) ligating the electroless plating catalyst to the ligating chemical agent, wherein the ligating chemical agent has the chemical structure: wherein n and m are each between about 1 and about 100.
    Type: Application
    Filed: August 14, 2013
    Publication date: May 1, 2014
    Applicant: International Business Machines Corporation
    Inventors: Tricia Breen CARMICHAEL, Sarah Jane VELLA, Ali AFZALI-ARDAKANI, Mahmoud Mostafa KHOJASTEH
  • Patent number: 8574680
    Abstract: A method of rendering a substrate catalytic to electroless metal deposition comprising the steps of: (a) depositing a ligating chemical agent on the substrate, which is capable of both binding to the substrate and ligating to an electroless plating catalyst; and (b) ligating the electroless plating catalyst to the ligating chemical agent, wherein the ligating chemical agent has the chemical structure:
    Type: Grant
    Filed: December 30, 2010
    Date of Patent: November 5, 2013
    Assignee: International Business Machines Corporation
    Inventors: Tricia Breen Carmichael, Sarah Jane Vella, Ali Afzali-Ardakani, Mahmoud Mostafa Khojasteh
  • Publication number: 20110177936
    Abstract: A method of rendering a substrate catalytic to electroless metal deposition comprising the steps of: (a) depositing a ligating chemical agent on the substrate, which is capable of both binding to the substrate and ligating to an electroless plating catalyst; and (b) ligating the electroless plating catalyst to the ligating chemical agent, wherein the ligating chemical agent has the chemical structure: wherein n and m are each between about 1 and about 100.
    Type: Application
    Filed: December 30, 2010
    Publication date: July 21, 2011
    Inventors: TRICIA BREEN CARMICHAEL, SARAH JANE VELLA, ALI AFZALI-ARDAKANI, MAHMOUD MOSTAFA KHOJASTEH
  • Patent number: 7862860
    Abstract: A method of immobilizing a catalyst on a substrate surface involves providing novel ligating copolymers comprising functional groups capable of binding to a substrate surface and functional groups capable of ligating to catalysts such as metal ions, metal complexes, nanoparticles, or colloids; applying the ligating copolymer to a substrate surface to cause the ligating copolymer to bind thereto, and contacting the modified substrate surface with a solution of a catalyst, causing the catalyst to be ligated by the ligating copolymer and thus immobilized on the substrate surface. The ligating copolymer may be patterned on the substrate surface using a method such as microcontact printing.
    Type: Grant
    Filed: May 22, 2006
    Date of Patent: January 4, 2011
    Assignee: International Business Machines Corporation
    Inventors: Tricia Breen Carmichael, Sarah Jane Vella, Ali Afzali-Ardakani, Mahmoud Mostafa Khojasteh
  • Patent number: 7087267
    Abstract: A method of immobilizing a catalyst on a substrate surface involves providing novel ligating copolymers comprising functional groups capable of binding to a substrate surface and functional groups capable of ligating to catalysts such as metal ions, metal complexes, nanoparticles, or colloids; applying the ligating copolymer to a substrate surface to cause the ligating copolymer to bind thereto, and contacting the modified substrate surface with a solution of a catalyst, causing the catalyst to be ligated by the ligating copolymer and thus immobilized on the substrate surface. The ligating copolymer may be patterned on the substrate surface using a method such as microcontact printing.
    Type: Grant
    Filed: November 29, 2001
    Date of Patent: August 8, 2006
    Assignee: International Business Machines Corporation
    Inventors: Tricia Lynn Breen, Sarah Jane Vella, Ali Afzali-Ardakani, Mahmoud Mostafa Khojasteh
  • Publication number: 20030132121
    Abstract: A method of immobilizing a catalyst on a substrate surface involves providing novel ligating copolymers comprising functional groups capable of binding to a substrate surface and functional groups capable of ligating to catalysts such as metal ions, metal complexes, nanoparticles, or colloids; applying the ligating copolymer to a substrate surface to cause the ligating copolymer to bind thereto, and contacting the modified substrate surface with a solution of a catalyst, causing the catalyst to be ligated by the ligating copolymer and thus immobilized on the substrate surface. The ligating copolymer may be patterned on the substrate surface using a method such as microcontact printing.
    Type: Application
    Filed: November 29, 2001
    Publication date: July 17, 2003
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Tricia Lynn Breen, Sarah Jane Vella, Ali Afzali-Ardakani, Mahmoud Mostafa Khojasteh