Patents by Inventor Michael Zak

Michael Zak 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: 8464053
    Abstract: Systems, methods, and media for retransmitting data using the SRTP are provided. In some embodiments, methods for retransmitting data using the SRTP are provided. The methods include: receiving at least one data unit associated with a media session; determining the index of the at least one data unit; determining the session key of the media session using the index; authenticating the at least one data unit using the session key; and retransmitting the at least one data unit.
    Type: Grant
    Filed: September 5, 2007
    Date of Patent: June 11, 2013
    Assignee: Radvision Ltd
    Inventors: Jay Davis, Michael Zak, Sasha Ruditsky, Tsahi Levent-Levi
  • Publication number: 20130080084
    Abstract: A pressure transmitter for use in measuring a pressure of a process fluid in an industrial process. The pressure transmitter includes a pressure sensor having a pressure output related to the pressure of the process fluid. Measurement circuitry is configured to calculate a process variable of the process fluid based upon the pressure output. Diagnostic circuitry diagnoses operation of the industrial process based upon a process parameter of the pressure output. Process parameter calculation circuitry calculates the process parameter based upon pressure output and reduces the effect of an abrupt change in the pressure output on the calculated process parameter.
    Type: Application
    Filed: September 28, 2011
    Publication date: March 28, 2013
    Inventors: John P. Miller, Michael Zak
  • Patent number: 8268521
    Abstract: According to an aspect of the invention, an electrophotographic photoreceptor including a conductive substrate and a photosensitive layer provided on a surface of the conductive substrate is provided. In the electrophotographic photoreceptor, an outermost layer of the photosensitive layer containing a crosslinked product formed from at least one charge transporting material having at least one substituent selected from the group consisting of —OH, —OCH3, —NH2, —SH, and —COOH, an acidic substance, and at least one compound selected from the group consisting of compounds represented by the following formula (A) and compounds represented by the following formula (B).
    Type: Grant
    Filed: May 15, 2009
    Date of Patent: September 18, 2012
    Assignees: Fuji Xerox Co., Ltd., Xerox Corporation
    Inventors: Katsumi Nukada, Hirofumi Nakamura, Mitsuhide Nakamura, Koji Bando, Kenny-tuan T Dinh, Giuseppa Baranyi, Nan-Xing Hu, Michael Zak
  • Publication number: 20100151366
    Abstract: According to an aspect of the invention, an electrophotographic photoreceptor including a conductive substrate and a photosensitive layer provided on a surface of the conductive substrate is provided. In the electrophotographic photoreceptor, an outermost layer of the photosensitive layer containing a crosslinked product formed from at least one charge transporting material having at least one substituent selected from the group consisting of —OH, —OCH3, —NH2, —SH, and —COOH, an acidic substance, and at least one compound selected from the group consisting of compounds represented by the following formula (A) and compounds represented by the following formula (B).
    Type: Application
    Filed: May 15, 2009
    Publication date: June 17, 2010
    Applicants: FUJI XEROX CO., LTD., XEROX CORPORATION
    Inventors: Katsumi NUKADA, Hirofumi NAKAMURA, Mitsuhide NAKAMURA, Koji BANDO, Kenny-tuan T. DINH, Giuseppa BARANYI, Nan-Xing HU, Michael ZAK
  • Patent number: 7666560
    Abstract: An imaging member includes a charge generating layer and a charge transport layer. The charge transport layer includes a first surface in contact with the charge generating layer and a second surface. The charge transport layer includes a film forming polymer binder and a charge transport component dispersed therein. The concentration of the charge transport component in the charge transport layer is at a peak in a region of the charge transport intermediate the first and second surfaces of the charge transport layer.
    Type: Grant
    Filed: June 21, 2005
    Date of Patent: February 23, 2010
    Assignee: Xerox Corporation
    Inventors: Satchidanand Mishra, Anthony M. Horgan, Kent Evans, George Liebermann, Kathleen M. Carmichael, Dennis J. Prosser, Richard L. Post, Edward Domm, Johann Junginger, Michael Zak
  • Publication number: 20090063858
    Abstract: Systems, methods, and media for retransmitting data using the SRTP are provided. In some embodiments, methods for retransmitting data using the SRTP are provided. The methods include: receiving at least one data unit associated with a media session; determining the index of the at least one data unit; determining the session key of the media session using the index; authenticating the at least one data unit using the session key; and retransmitting the at least one data unit.
    Type: Application
    Filed: September 5, 2007
    Publication date: March 5, 2009
    Applicant: Radivision Ltd.
    Inventors: Jay Davis, Michael Zak, Sasha Ruditsky, Tsahi Levent-Levi
  • Patent number: 7435518
    Abstract: This invention relates to a method for improving chemical stability in a metal or metallized substrate, such as an aluminum substrate, of an electrophotographic-imaging member by treating the substrate with a composition containing a rare-earth metal.
    Type: Grant
    Filed: October 3, 2005
    Date of Patent: October 14, 2008
    Assignee: Xerox Corporation
    Inventors: John Graham, Nancy Belknap, Kendra M. Giza, Andronique Ioannidis, Michael Zak, Sandra Gardner, Nan-Xing Hu, Timothy P. Bender, Ah-Mee Hor
  • Publication number: 20070092824
    Abstract: A unique solvent system adapted for high speed overcoat applications is disclosed. The solvent system comprises methyl alcohol and monochlorobenzene in a weight ratio of about 6:1 to about 1.5:1, respectively.
    Type: Application
    Filed: October 24, 2005
    Publication date: April 26, 2007
    Inventors: Raymond Crandall, John Yanus, Ed Radigan, Michael Zak
  • Publication number: 20070077508
    Abstract: This invention relates to a method for improving chemical stability in a metal or metallized substrate, such as an aluminum substrate, of an electrophotographic-imaging member by treating the substrate with a composition containing a rare-earth metal.
    Type: Application
    Filed: October 3, 2005
    Publication date: April 5, 2007
    Applicant: XEROX CORPORATION
    Inventors: John Graham, Nancy Belknap, Kendra Giza, Andronique Ioannidis, Michael Zak, Sandra Gardner, Nan-Xing Hu, Timothy Bender, Ah-Mee Hor
  • Publication number: 20060286471
    Abstract: An imaging member includes a charge generating layer and a charge transport layer. The charge transport layer includes a first surface in contact with the charge generating layer and a second surface. The charge transport layer includes a film forming polymer binder and a charge transport component dispersed therein. The concentration of the charge transport component in the charge transport layer is at a peak in a region of the charge transport intermediate the first and second surfaces of the charge transport layer.
    Type: Application
    Filed: June 21, 2005
    Publication date: December 21, 2006
    Inventors: Satchidanand Mishra, Anthony Horgan, Kent Evans, George Liebermann, Kathleen Carmichael, Dennis Prosser, Richard Post, Edward Domm, Johann Junginger, Michael Zak
  • Publication number: 20060063080
    Abstract: A charge transport layer composition for a photoreceptor includes at least a binder, at least one arylamine charge transport material, e.g., N,N?-diphenyl-N,N?-bis(3-methylphenyl)-(2,2?-biphenyl)-4,4?-diamine, and at least one polymer containing carboxylic acid groups or groups capable of forming carboxylic acid groups. The charge transport layer forms a layer of photoreceptor, which also includes an optional anti-curl layer, a substrate, an optional hole blocking layer, an optional adhesive layer, a charge generating layer, and optionally one or more overcoat or protective layers.
    Type: Application
    Filed: September 21, 2004
    Publication date: March 23, 2006
    Applicant: XEROX CORPORATION
    Inventors: Yuhua Tong, Kenny-Tuan Dinh, Markus Silvestri, Michael Zak, John Yanus, Min-Hong Fu, David Skinner, Kathleen Carmichael, Colleen Helbig, Dale Renfer, John Bergfjord, Susan Van Dusen, Anthony Horgan, Jin Wu, Steven Sterling
  • Publication number: 20060014089
    Abstract: A charge transport layer composition for a photoreceptor includes at least a binder and a charge transport material of about 100% to about 40% by weight of a total of the charge transport layer N,N-dimethylphenyl)-4-biphenylamine and about 0% to about 60% N,N?-bis(3-methylphenyl)-(1,1?-biphenyl)-4,4?-diamine, and wherein the total charge transport material in the composition is 48% or less of the total solids of the composition. The charge transport layer forms a layer of a photoreceptor, which also includes an optional anti-curl layer, a substrate, an optional hole blocking layer, an optional adhesive layer, a charge generating layer, and optionally one or more overcoat or protective layers.
    Type: Application
    Filed: July 13, 2004
    Publication date: January 19, 2006
    Applicant: XEROX CORPORATION
    Inventors: Yuhua Tong, Kenny-Tuan Dinh, Markus Silvestri, Michael Zak, John Yanus, Min-Hong Fu, David Skinner, Kathleen Carmichael, Colleen Helbig, Dale Renfer, John Bergfjord, Susan Van Dusen