Patents by Inventor Bipin S. Parekh

Bipin S. Parekh 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: 7879137
    Abstract: A lithographic projection apparatus (1) includes a support configured to support a patterning device (MA), the patterning device configured to pattern the projection beam according to a desired pattern. The apparatus has a substrate (W) table configure to hold a substrate, a projection system configured to project the patterned beam onto a target portion of the substrate. The apparatus also has a purge gas supply system (100) configured to provide a purge gas near a surface of a component of the lithographic projection apparatus. The purge gas supply system (100) includes a purge gas mixture generator (120) configured to generate a purge gas mixture which includes at least one purging gas and moisture. The purge gas mixture generator has a moisturizer (150) configured to add the moisture to the purge gas and a purge gas mixture outlet (130) connected to the purge gas mixture generator (120) configured to supply the purge gas mixture near the surface.
    Type: Grant
    Filed: July 21, 2004
    Date of Patent: February 1, 2011
    Assignee: Entegris, Inc.
    Inventors: Bipin S. Parekh, Jeffrey J. Spiegelman, Robert S. Zeller, Russell J. Holmes
  • Patent number: 7789940
    Abstract: A lithographic projection apparatus (1) includes a support configured to support a patterning device (MA), the patterning device configured to pattern the projection beam according to a desired pattern. The apparatus has a substrate (W) table configure to hold a substrate, a projection system configured to project the patterned beam onto a target portion of the substrate. The apparatus also has a purge gas supply system (100) configured to provide a purge gas near a surface of a component of the lithographic projection apparatus. The purge gas supply system (100) includes a purge gas mixture generator (120) configured to generate a purge gas mixture which includes at least one purging gas and moisture. The purge gas mixture generator has a moisturizer (150) configured to add the moisture to the purge gas and a purge gas mixture outlet (130) connected to the purge gas mixture generator (120) configured to supply the purge gas mixture near the surface.
    Type: Grant
    Filed: July 21, 2004
    Date of Patent: September 7, 2010
    Assignee: Entegris, Inc.
    Inventors: Bipin S. Parekh, Jeffrey J. Spiegelman, Robert S. Zeller, Russell J. Holmes
  • Patent number: 7717405
    Abstract: Disclosed is a shell side contactor which can be used to form ozonated water. The contactor includes a shell and a plurality of porous perfluoroalkoxy resin thermoplastic hollow fibers that are potted at each end of the shell. The perfluoroalkoxy resin hollow fibers can be unskinned, skinned on their inner surface, or skinned on their outer surfaces. The contactor is provided with a spacer that spreads the hollow fibers adjacent an inlet to the shell, thereby permitting liquid flow at desirably high flow rates with acceptable pressure drop through the shell. The mass transfer efficiency of the contactor can be enhanced by jetting water into the fiber bundle and introducing gaps into the bundle.
    Type: Grant
    Filed: March 18, 2008
    Date of Patent: May 18, 2010
    Assignee: Entegris, Inc.
    Inventors: Bipin S. Parekh, Rajnikant B. Patel, Kwok-Shun Cheng
  • Publication number: 20090316119
    Abstract: The present invention includes apparatus and methods for producing a conditioned immersion fluid for use in an immersion lithography process. The conditioned immersion fluid protects the immersion system lens and reduces or eliminates deposition of contaminants onto the lens that can adversely affect the lens transmission and durability of an immersion lithography system.
    Type: Application
    Filed: July 18, 2007
    Publication date: December 24, 2009
    Inventors: Bipin S. Parekh, Annie Xia, Michael Clarke, Joseph E. Smith
  • Publication number: 20080156191
    Abstract: Disclosed is a shell side contactor which is highly efficient for forming relatively high concentration of ozonated water comprising a shell containing perfluoroalkoxy resin thermoplastic hollow fibers used as a porous barrier. The perfluoroalkoxy resin comprises a copolymer of tetrafluoroethylene and perfluoroalkyl vinyl ether or a tetrafluoroethyl-co-hexafluoropropylene (FEP) copolymer. The perfluoroalkoxy resin hollow fibers can be unskinned, skinned on their inner surface or skinned on their outer surfaces. The device is provided with spacer means for separating unpotted hollow fibers adjacent an inlet to the shell, thereby permitting liquid flow through the shell at desirably high flow rates with acceptable pressure drop through the shell.
    Type: Application
    Filed: March 18, 2008
    Publication date: July 3, 2008
    Inventors: BIPIN S. PAREKH, Rajnikant B. Patel, Kwok-Shun Cheng
  • Patent number: 6649064
    Abstract: The invention pertains to a method for removing metallic ions and/or particulate material from an aqueous acid solution using particle removing membranes (e.g., ultra high molecular weight polyethylene) having immobilized ligand groups (e.g., macrocycle or other similar chelating ligands) that possess high equilibrium binding constants for ion and particulate removal. The method is particularly useful for simultaneously filtering/purifying aqueous hydrofluoric or hydrochloric acid.
    Type: Grant
    Filed: January 28, 2002
    Date of Patent: November 18, 2003
    Assignee: Mykrolis Corporation
    Inventors: Bipin S. Parekh, Anthony J. DiLeo, Edward Deane, Ronald L. Bruening
  • Publication number: 20020125189
    Abstract: The invention pertains to a method for removing metallic ions and/or particulate material from an aqueous acid solution using particle removing membranes (e.g., ultra high molecular weight polyethylene) having immobilized ligand groups (e.g., macrocycle or other similar chelating ligands) that possess high equilibrium binding constants for ion and particulate removal. The method is particularly useful for simultaneously filtering/purifying aqueous hydrofluoric or hydrochloric acid.
    Type: Application
    Filed: January 28, 2002
    Publication date: September 12, 2002
    Applicant: Millipore Corporation
    Inventors: Bipin S. Parekh, Anthony J. DiLeo, Edward Deane, Ronald L. Bruening
  • Patent number: 6447684
    Abstract: The invention pertains to a method for simultaneously removing metallic ions and particulate material from a pH neutral solution using particle-removing membranes (e.g., ultra high molecular weight polyethylene) having immobilized ligands that possess the capacity and high equilibrium binding constants for ion removal. The method is particularly useful for simultaneously filtering/purifying deionized water.
    Type: Grant
    Filed: May 14, 2001
    Date of Patent: September 10, 2002
    Assignees: Mykrolis Corporation, IBC Advanced Technologies, Inc.
    Inventors: Bipin S. Parekh, Anthony J. DiLeo, Edward Deane, Ronald L. Bruening
  • Publication number: 20010042715
    Abstract: The invention pertains to a method for removing metallic ions and/or particulate material from a pH neutral solution using particle-removing membranes (e.g., ultra high molecular weight polyethylene) having immobilized ligands that possess the capacity and high equilibrium binding constants for ion removal. The method is particularly useful for simultaneously filtering/purifying deionized water.
    Type: Application
    Filed: May 14, 2001
    Publication date: November 22, 2001
    Applicant: Millipore Corporation
    Inventors: Bipin S. Parekh, Anthony J. DiLeo, Edward Deane, Ronald L. Bruening
  • Patent number: 6221476
    Abstract: Compositions and methods for selectively binding metal ions from a source solution comprise using a polyhydroxypyridinone-containing ligand covalently bonded to a membrane support having the formula M—A—L(HOPO)n. M is a membrane having a hydrophilic surface, A is a covalent linkage mechanism, L is a ligand carrier, HOPO is a hydroxypyridinone appropriately spaced on the ligand carrier to provide a minimum of six functional coordination metal binding sites, and n is an integer of 3 to 6. The separation is accomplished by passing a source solution containing the ions to be separated through a cartridge containing the membrane-ligand composition, causing the selected ions to be complexed to the HOPO ligands and subsequently removing the selected ions from the cartridge by passing an aqueous receiving solution through the cartridge and quantitatively stripping the selected ions from the HOPO ligand.
    Type: Grant
    Filed: June 11, 1999
    Date of Patent: April 24, 2001
    Assignees: IBC Advanced Technologies, Inc., Millipore Corporation
    Inventors: Ronald L. Bruening, Krzysztof E. Krakowiak, Anthony J. Dileo, Bipin S. Parekh