Patents by Inventor Alok Singh

Alok Singh 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: 20090269587
    Abstract: Provided herein are the polymers shown below. The value n is a positive integer. R1 is an organic group, and each R2 is H or a chemisorbed group, with at least one R2 being a chemisorbed group. The polymer may be a nanostructured film. Also provided herein is a method of: converting a di-p-xylylene paracyclophane dimer to a reactive vapor of monomers; depositing the reactive vapor onto a substrate held at an angle relative to the vapor flux to form nanostructured poly(p-xylylene) film; reacting the film with an agent to form hydrogen atoms that are reactive with a precursor of a chemisorbed group, if the film does not contain the hydrogen atoms; and reacting the hydrogen atoms with the precursor. Also provided herein is a device having a nanostructured poly(p-xylylene) film on a pivotable substrate. The film has directional hydrophobic or oleophobic properties and directional adhesive properties.
    Type: Application
    Filed: April 28, 2009
    Publication date: October 29, 2009
    Applicant: The Government of the United States of America, as represented by the Secretary of the Navy
    Inventors: Walter J. Dressick, Melik C. Demirel, Alok Singh
  • Patent number: 7596644
    Abstract: System and method of a pace engine for governing the different transmission rates tailored for different connections by rate pacing a plurality of queues are described. Roughly described, the pace engine includes a binning controller for receiving queues from a transmit DMA queue manager and determines the earliest allowed time for a particular queue that is stored and paced in a Work Bin, a Fast Bin, or a Slow Bin. A pace table stores information about the minimum inter-packet-gap for each connection that is coupled to the transmit DMA queue manager. A timer is coupled to the binning controller with a multi-bit continuous counter that increments at a predetermined time unit and wraps around after a predetermined amount of time.
    Type: Grant
    Filed: January 11, 2006
    Date of Patent: September 29, 2009
    Assignee: Solarflare Communications, Inc.
    Inventors: Ching Yu, David Riddoch, Steve Pope, John Mingyung Chiang, Alok Singh, Derek Roberts
  • Patent number: 7501259
    Abstract: Catalytic enzyme-modified textiles are disclosed for providing protection from chemical exposure. The textiles are composed of a cloth substrate, at least one polyelectrolyte layer, at least one enzyme layer to degrade the chemical agent, and at least one capping layer. Also disclosed is the related method for making catalytic enzyme-modified textiles.
    Type: Grant
    Filed: September 19, 2006
    Date of Patent: March 10, 2009
    Inventors: Alok Singh, Walter J. Dressick, Yongwoo Lee
  • Publication number: 20090010980
    Abstract: A composite structure exhibiting the ability to degrade chemical or biological agents upon contact comprising a substrate to be protected from the deleterious effects of chemical or biological agents possessing surface groups capable of deactivating materials having the ability to degrade chemical or biological agents, a buffer film, coated onto the substrate, that blocks the ability of the substrate surface groups to deactivate the materials having the ability to degrade chemical or biological agents, and a protective film, coated onto the buffer film, containing materials having the ability to degrade chemical or biological agents encapsulated in or comprising the outer surface of the protective film.
    Type: Application
    Filed: October 10, 2007
    Publication date: January 8, 2009
    Inventors: Alok Singh, Walter J. Dressick
  • Patent number: 7348169
    Abstract: A bioactive catalytic material is disclosed for providing protection from chemical exposure. The material is composed of enzymes immobilized within polyelectrolyte multilayers and a polymerizable end-capping layer to render stability to enzymes. Also disclosed is the related method for making a bioactive catalytic material and their deposition on substrates of varying size, shape and flexibility for providing active protection from chemical exposure.
    Type: Grant
    Filed: May 4, 2006
    Date of Patent: March 25, 2008
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Alok Singh, Yongwoo Lee, Evan Stanish, Eddie Chang, Walter J. Dressick
  • Patent number: 7270973
    Abstract: Catalytic enzyme-modified textiles are disclosed for providing protection from chemical exposure. The textiles are composed of a cloth substrate, at least one polyelectrolyte layer, at least one enzyme layer to degrade the chemical agent, and at least one capping layer. Also disclosed is the related method for making catalytic enzyme-modified textiles.
    Type: Grant
    Filed: May 20, 2004
    Date of Patent: September 18, 2007
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Alok Singh, Walter J. Dressick, Yongwoo Lee
  • Publication number: 20070174511
    Abstract: System and method of a pace engine for governing the different transmission rates tailored for different connections by rate pacing a plurality of queues are described. Roughly described, the pace engine includes a binning controller for receiving queues from a transmit DMA queue manager and determines the earliest allowed time for a particular queue that is stored and paced in a Work Bin, a Fast Bin, or a Slow Bin. A pace table stores information about the minimum inter-packet-gap for each connection that is coupled to the transmit DMA queue manager. A timer is coupled to the binning controller with a multi-bit continuous counter that increments at a predetermined time unit and wraps around after a predetermined amount of time.
    Type: Application
    Filed: January 11, 2006
    Publication date: July 26, 2007
    Applicant: Level 5 Networks, Inc.
    Inventors: Ching Yu, David Riddoch, Steve Pope, John Chiang, Alok Singh, Derek Roberts
  • Publication number: 20070014838
    Abstract: Catalytic enzyme-modified textiles are disclosed for providing protection from chemical exposure. The textiles are composed of a cloth substrate, at least one polyelectrolyte layer, at least one enzyme layer to degrade the chemical agent, and at least one capping layer. Also disclosed is the related method for making catalytic enzyme-modified textiles.
    Type: Application
    Filed: September 19, 2006
    Publication date: January 18, 2007
    Inventors: Alok Singh, Walter Dressick, Yougwoo Lee
  • Patent number: 7067294
    Abstract: A bioactive catalytic material is disclosed for providing protection from chemical exposure. The material is composed of enzymes immobilized within polyelectrolyte multilayers and a polymerizable end-capping layer to render stability to enzymes. Also disclosed is the related method for making a bioactive catalytic material and their deposition on substrates of varying size, shape and flexibility for providing active protection from chemical exposure.
    Type: Grant
    Filed: December 23, 2003
    Date of Patent: June 27, 2006
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Alok Singh, Yongwoo Lee, Ivan Stanish, Eddie Chang, Walter J. Dressick
  • Patent number: 6994934
    Abstract: A galvanic cell having a cathode, an anode, and an electrolyte. The cathode and anode each have vesicles, an electroactive species encapsulated into the vesicles, a conducting substrate, and functionalized tethers immobilizing the vesicles to the substrates. The electrolyte is in contact with both conducting substrates. At least some of the vesicles contain benzoquinone and/or hydroquinone.
    Type: Grant
    Filed: August 19, 2003
    Date of Patent: February 7, 2006
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Ivan Stanish, Alok Singh
  • Publication number: 20050191616
    Abstract: A membrane is disclosed made from a compound having a hydrophilic head group, an aliphatic tail group, and a polymerizable functional group. The membrane spans an aperture and may be polymerized. The membrane may be useful for DNA sequencing when the membrane includes an ion channel.
    Type: Application
    Filed: February 28, 2005
    Publication date: September 1, 2005
    Inventors: Devanand Shenoy, Alok Singh, William Barger, John Kasianowicz
  • Publication number: 20050136522
    Abstract: A bioactive catalytic material is disclosed for providing protection from chemical exposure. The material is composed of enzymes immobilized within polyelectrolyte multilayers and a polymerizable end-capping layer to render stability to enzymes. Also disclosed is the related method for making a bioactive catalytic material and their deposition on substrates of varying size, shape and flexibility for providing active protection from chemical exposure.
    Type: Application
    Filed: December 23, 2003
    Publication date: June 23, 2005
    Inventors: Alok Singh, Yongwoo Lee, Ivan Stanish, Eddie Chang, Walter Dressick
  • Publication number: 20050136523
    Abstract: Catalytic enzyme-modified textiles are disclosed for providing protection from chemical exposure. The textiles are composed of a cloth substrate, at least one polyelectrolyte layer, at least one enzyme layer to degrade the chemical agent, and at least one capping layer. Also disclosed is the related method for making catalytic enzyme-modified textiles.
    Type: Application
    Filed: May 20, 2004
    Publication date: June 23, 2005
    Inventors: Alok Singh, Walter Dressick, Yongwoo Lee
  • Patent number: 6869784
    Abstract: Enzymes are modified by incorporating anchor sites for linking the enzymes to a target surface without destroying the catalytic activity of the enzymes. A stable carrier to accommodate and bind the selected enzyme is constructed, and the enzyme is non-covalently linked to the carrier, generally through metal salts of iminodiacetate.
    Type: Grant
    Filed: November 29, 2000
    Date of Patent: March 22, 2005
    Assignee: The United States of America as represented by the Secretary of America
    Inventors: Alok Singh, Mehran Pazirandeh, Paul E. Schoen, Michael A. Markowitz, J. Matthew Mauro
  • Publication number: 20040038128
    Abstract: A galvanic cell having a cathode, an anode, and an electrolyte. The cathode and anode each have vesicles, an electroactive species encapsulated into the vesicles, a conducting substrate, and functionalized tethers immobilizing the vesicles to the substrates. The electrolyte is in contact with both conducting substrates. At least some of the vesicles contain benzoquinone and/or hydroquinone.
    Type: Application
    Filed: August 19, 2003
    Publication date: February 26, 2004
    Inventors: Ivan Stanish, Alok Singh
  • Publication number: 20040029243
    Abstract: Enzymes are modified by incorporating anchor sites for linking the enzymes to a target surface without destroying the catalytic activity of the enzymes.
    Type: Application
    Filed: November 29, 2000
    Publication date: February 12, 2004
    Inventors: Alok Singh, Mehran Pazirandeh, Paul E. Schoen, Michael A. Markowitz, J. Matthew Mauro
  • Patent number: 6689620
    Abstract: A colorimetric detector for chemical and biological agents or toxins is made of a giant unilamellar vesicle (GUV) having a membrane bilayer which is polymerized to stabilize the giant unilamellar vesicle and to provide extended conjugated polymer backbone, and the GUV has at least one incorporated molecular recognition site for the chemical and biological agents or toxins. The GUVs are about 10-300 microns and preferably made of a polymerizable diacetylenic GUV where the acyl chains are crosslinked. When the agents or toxins bind to the recognition site the detector exhibits a color change. The detector can be used in a colorimetric detector apparatus where the samples can be present in air or in water.
    Type: Grant
    Filed: February 4, 2003
    Date of Patent: February 10, 2004
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Alok Singh, Paul Schoen
  • Patent number: 6680142
    Abstract: The invention relates to a microbattery made of bioelectroactive components based on biomimetic processes. Bio-derived electron donors and electron acceptors are separately encapsulated in at least one pair of polymerized phospholipid vesicles. Embedded within the vesicle walls are lipophilic electron mediators that facilitate the transfer of electrons across the vesicle walls. Each pair of vesicles is immobilized on a conducting surface. The pair of vesicles are isolated from each other to create a galvanic cell, in which electrons flow from high to low electrochemical potential. A high energy density battery can be achieved if the vesicles are immobilized on highly porous conducting substrates.
    Type: Grant
    Filed: August 24, 2001
    Date of Patent: January 20, 2004
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Alok Singh, Ivan Stanish
  • Publication number: 20030211586
    Abstract: Enzymes are modified by incorporating anchor sites for linking the enzymes to a target surface without destroying the catalytic activity of the enzymes.
    Type: Application
    Filed: May 8, 2003
    Publication date: November 13, 2003
    Inventors: Alok Singh, Mehran Pazirandeh, Paul E. Schoen
  • Patent number: 6541270
    Abstract: A colorimetric detector for chemical and biological agents or toxins is made of a giant unilamellar vesicle (GUV) having a membrane bilayer which is polymerized to stabilize the giant unilamellar vesicle and to provide extended conjugated polymer backbone, and the GUV has at least one incorporated molecular recognition site for the chemical and biological agents or toxins. The GUVs are about 10-300 microns and preferably made of a polymerizable diacetylenic GUV where the acyl chains are crosslinked. When the agents or toxins bind to the recognition site the detector exhibits a color change. The detector can be used in a colorimetric detector apparatus where the samples can be present in air or in water.
    Type: Grant
    Filed: January 16, 2001
    Date of Patent: April 1, 2003
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Alok Singh, Paul Schoen