Patents by Inventor Siddarth SAMPATH

Siddarth SAMPATH 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: 20250144574
    Abstract: Described are filter membranes, related systems, and related method useful for producing purified (e.g., ultrapure) water, including membranes, systems, and methods of preparing purified water that will be useable in processes of manufacturing electronic and semiconductor devices.
    Type: Application
    Filed: January 10, 2025
    Publication date: May 8, 2025
    Inventors: James Hamzik, Siddarth Sampath, Justin Brewster, Ashutosh Shrikant Bhabhe
  • Publication number: 20250099918
    Abstract: Described are coated porous polymeric filter membranes that include a filter membrane substrate and an ionic polymer coating applied to the surface of the substrate; methods of making the coated porous polymeric filter membranes and filters that include such a coated membrane; and method of using the coated membranes to remove metal ions from purified water.
    Type: Application
    Filed: September 20, 2024
    Publication date: March 27, 2025
    Inventors: Alketa Gjoka, Jad Ali Jaber, Clifton G. Ngan, James Hamzik, David Crespo, Saksatha Ly, Christopher W. Webb, Jikku Thomas, Satoshi Kamimoto, Gaurav M. Batra, Siddarth Sampath
  • Publication number: 20240350984
    Abstract: The disclosure is directed to removal of metal contaminants from fluids, as well as ligand-modified filter materials useful for carrying out such methods. The filters and methods of this disclosure are particularly effective for removal of metals from liquid compositions comprising amines. Such liquid compositions with significantly reduced amounts of metals can be used in a microelectronic manufacturing process, such as liquids for removing photoresist or liquids used in etching. The ligand-modified filters, such as ligand-modified porous membranes, can be configured for use in a microelectronic manufacturing system, which can be utilized in the system as a point of use metal-removal feature for liquids entering the system.
    Type: Application
    Filed: July 1, 2024
    Publication date: October 24, 2024
    Inventors: James Hamzik, Justin Brewster, Siddarth Sampath, Jad Ali Jaber, Aabid A. Mir
  • Patent number: 12059656
    Abstract: The disclosure is directed to removal of metal contaminants from fluids, as well as ligand-modified filter materials useful for carrying out such methods. The filters and methods of this disclosure are particularly effective for removal of metals from liquid compositions comprising amines. Such liquid compositions with significantly reduced amounts of metals can be used in a microelectronic manufacturing process, such as liquids for removing photoresist or liquids used in etching. The ligand-modified filters, such as ligand-modified porous membranes, can be configured for use in a microelectronic manufacturing system, which can be utilized in the system as a point of use metal-removal feature for liquids entering the system.
    Type: Grant
    Filed: September 29, 2021
    Date of Patent: August 13, 2024
    Assignee: ENTEGRIS, INC.
    Inventors: James Hamzik, Justin Brewster, Siddarth Sampath, Jad Ali Jaber, Aabid A. Mir
  • Publication number: 20240226779
    Abstract: A filter housing includes a sleeve, a first endcap coupled to a first open end of the sleeve, and a second endcap coupled to the second open end of the sleeve. The sleeve includes an interior volume with an outer radial portion and an inner radial portion. The first endcap includes first plurality of ports that connect to the outer radial portion and the inner radial portion of the interior volume of the sleeve. The second endcap includes a second plurality of ports that connect to the outer radial portion and the inner radial portion of the interior volume of the sleeve. The filter housing is configured to enclose a filter member in the sleeve between the first endcap and the second endcap. A method is for filtering liquid with a filter that includes a filter member and a filter housing.
    Type: Application
    Filed: October 24, 2023
    Publication date: July 11, 2024
    Inventors: Matthew Schnaare, Eric Grinde, Ashutosh Shrikant Bhabhe, Siddarth Sampath
  • Publication number: 20240131455
    Abstract: A filter housing includes a sleeve, a first endcap coupled to a first open end of the sleeve, and a second endcap coupled to the second open end of the sleeve. The sleeve includes an interior volume with an outer radial portion and an inner radial portion. The first endcap includes first plurality of ports that connect to the outer radial portion and the inner radial portion of the interior volume of the sleeve. The second endcap includes a second plurality of ports that connect to the outer radial portion and the inner radial portion of the interior volume of the sleeve. The filter housing is configured to enclose a filter member in the sleeve between the first endcap and the second endcap. A method is for filtering liquid with a filter that includes a filter member and a filter housing.
    Type: Application
    Filed: October 23, 2023
    Publication date: April 25, 2024
    Inventors: Matthew Schnaare, Eric Grinde, Ashutosh Shrikant Bhabhe, Siddarth Sampath
  • Publication number: 20230182049
    Abstract: A filter unit includes a housing, a first filter and a second filter disposed in the housing, and a liquid flow path that extends through the first and second filters in series. The first filter includes a first axial end affixed to the housing and a first filter media. The second filter includes a first axial end affixed to the housing at the outlet and a second filter media. The liquid directed radially outward through the first filter media and radially inward through the second filter media. A method of filtering a liquid within a filter unit includes passing the liquid radially outward through a first filter media of a first filter, directing the liquid from the first filter to a second filter, and passing the liquid radially inward through a second filter element of the second filter.
    Type: Application
    Filed: December 7, 2022
    Publication date: June 15, 2023
    Inventors: Siddarth Sampath, Christopher Paul Barck, Ashutosh Shrikant Bhabhe, Hayden Lincicome
  • Publication number: 20230182045
    Abstract: A filter unit for filtering liquid includes a housing with an inlet and an outlet, a first filter and a second filter disposed in the housing, and a liquid flow path extending from the inlet to the outlet. The liquid flow path directs the liquid one of radially inward and radially outward through a first filter media of the first filter and the other one of radially and directs the liquid the other one of radially inward and radially outward through a second filter media of the second filter. A method of filtering a liquid within a filter unit includes passing the liquid one of radially inward and radially outward through a first filter media of a first filter and passing the liquid the other one of radially inward and radially outward through a second filter media of a second filter.
    Type: Application
    Filed: December 8, 2022
    Publication date: June 15, 2023
    Inventors: Siddarth Sampath, Ashutosh Shrikant Bhabhe, Christopher Paul Barck, Hayden Lincicome
  • Publication number: 20230149916
    Abstract: The disclosure provides a porous polymeric membrane having ionizable nitrogen functional groups at least at its surface, wherein such groups are associated with a hydroxide anion. The membranes are useful in the purification of polar solvents such as water and alcohols and are capable of removing trace amounts of anionic contaminants such as halides, phosphates, nitrates, nitrites, sulfites, and sulfates.
    Type: Application
    Filed: November 4, 2022
    Publication date: May 18, 2023
    Inventors: Siddarth Sampath, Ashutosh Shrikant Bhabhe, James Hamzik, Justin Brewster
  • Publication number: 20220111337
    Abstract: Described are filter membranes, related systems, and related method useful for producing purified (e.g., ultrapure) water, including membranes, systems, and methods of preparing purified water that will be useable in processes of manufacturing electronic and semiconductor devices.
    Type: Application
    Filed: October 1, 2021
    Publication date: April 14, 2022
    Inventors: James HAMZIK, Siddarth SAMPATH, Justin BREWSTER, Ashutosh Shrikant BHABHE
  • Publication number: 20220105476
    Abstract: The disclosure is directed to removal of metal contaminants from fluids, as well as ligand-modified filter materials useful for carrying out such methods. The filters and methods of this disclosure are particularly effective for removal of metals from liquid compositions comprising amines. Such liquid compositions with significantly reduced amounts of metals can be used in a microelectronic manufacturing process, such as liquids for removing photoresist or liquids used in etching. The ligand-modified filters, such as ligand-modified porous membranes, can be configured for use in a microelectronic manufacturing system, which can be utilized in the system as a point of use metal-removal feature for liquids entering the system.
    Type: Application
    Filed: September 29, 2021
    Publication date: April 7, 2022
    Inventors: James HAMZIK, Justin BREWSTER, Siddarth SAMPATH, Jad Ali JABER, Aabid A. MIR