Patents by Inventor Dinkar Nandwana

Dinkar Nandwana 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: 11830731
    Abstract: The present disclosure pertains to embodiments of a semiconductor deposition reactor manifold and methods of using the semiconductor deposition reactor manifold which can be used to deposit semiconductor layers using processes such as atomic layer deposition (ALD). The semiconductor deposition reactor manifold has a bore, a first supply channel, and a second supply channel. Advantageously, the first supply channel and the second supply channel merge with the bore in an offset fashion which leads to reduced cross-contamination within the supply channels.
    Type: Grant
    Filed: October 20, 2020
    Date of Patent: November 28, 2023
    Assignee: ASM IP Holding B.V.
    Inventors: Dinkar Nandwana, Eric James Shero, Carl Louis White, Todd Robert Dunn, William George Petro, Jereld Lee Winkler, Aniket Chitale
  • Publication number: 20230183863
    Abstract: The present disclosure pertains to embodiments of a semiconductor deposition reactor manifold which can be used to deposit semiconductor layers using processes such as atomic layer deposition (ALD). The semiconductor deposition reactor manifold comprising heater blocks with heater elements mounted on a manifold body. Advantageously, the heater blocks are detachably mounted for easy replacement.
    Type: Application
    Filed: December 12, 2022
    Publication date: June 15, 2023
    Inventors: Shreyans Kedia, Dinkar Nandwana, Kyle Fondurulia, Todd Robert Dunn, Jereld Lee Winkler
  • Publication number: 20230184539
    Abstract: An endpoint detection system for use in detecting an endpoint of a refurbishment process for process chamber components. The refurbishment process involves use of an etchant bath to etch or clean chamber components after their use a reaction chamber in semiconductor processing to remove deposited materials including oxide films or the like. The endpoint detection system is configured to use measurements of reflected electromagnetic radiation from surfaces of the component in an etchant bath, transmitted electromagnetic radiation passing through holes in the chamber component while the component is in the etchant bath, or both to detect process endpoints. The process endpoints can coincide with a desired amount of removal of the deposited materials from surfaces and/or through holes in the chamber component. Upon detection of the endpoints, the chamber component can be removed from the etchant to limit over etching of materials from the chamber component to increase useful life.
    Type: Application
    Filed: December 7, 2022
    Publication date: June 15, 2023
    Inventors: Dinkar Nandwana, Dinh Tran, Allen D'Ambra, Gary Powell
  • Publication number: 20230088313
    Abstract: A gas distribution system having a first plurality of apertures to supply a gas source to a reaction chamber and a second plurality of apertures surrounding the first plurality of apertures and configured to remove the gas from the reaction chamber. In one embodiment, the second plurality of apertures may gradually increase in diameter as the distance from a main exhaust channel increases. Alternatively, or in addition, the angle spacing between adjacent apertures may gradually decrease as the distance from the main exhaust channel increases.
    Type: Application
    Filed: September 20, 2022
    Publication date: March 23, 2023
    Inventors: Herbert Terhorst, Dinkar Nandwana, Eric Shero, Allen D'Ambra, Jessica Akemi Cimada da Silva, Daner Abdula
  • Publication number: 20230069359
    Abstract: Herein disclosed are systems and methods related to semiconductor processing device including a manifold including a bore configured to deliver a gas to a reaction chamber, the manifold including a first block mounted to a second block, the first and second mounted blocks cooperating to at least partially define the bore. The manifold may further comprise an insulator cap disposed about the first block or the second block. The semiconductor processing device may comprise at least three valve blocks mounted to the second block so that a precursor backflow is prevented. Heater rod(s) can extend through the second block to a location adjacent the first block.
    Type: Application
    Filed: October 10, 2022
    Publication date: March 2, 2023
    Inventors: Shuyang Zheng, Jereld Lee Winkler, Ankit Kimtee, Eric James Shero, Mimoh Kwatra, Dinkar Nandwana, Todd Robert Dunn, Carl Louis White
  • Patent number: 11492701
    Abstract: Herein disclosed are systems and methods related to semiconductor processing device including a manifold including a bore configured to deliver a gas to a reaction chamber, the manifold including a first block mounted to a second block, the first and second mounted blocks cooperating to at least partially define the bore. A supply channel provides fluid communication between a gas source and the bore, and the supply channel is disposed at least partially in the second block. A metallic seal is disposed about the bore at an interface between the first and second block. Advantageously, the metallic seal improves sealing between the interface between the first block and the second block.
    Type: Grant
    Filed: March 9, 2020
    Date of Patent: November 8, 2022
    Assignee: ASM IP HOLDING B.V.
    Inventors: Dinkar Nandwana, Jereld Lee Winkler, Eric James Shero, Todd Robert Dunn, Carl Louis White
  • Publication number: 20220168787
    Abstract: Cleaning fixtures for cleaning a showerhead assembly are disclosure. The cleaning fixtures include: a fixture body incorporating three or more cavities, each cavity being separate from an adjacent cavity by a partition, and a number of channels associated with each cavity for fluidly connecting the cavities with an upper surface of the fixture body.
    Type: Application
    Filed: November 30, 2021
    Publication date: June 2, 2022
    Inventors: Dinkar Nandwana, Allen D'Ambra, Dinh Tran, Ankit Kimtee, Eric Shero
  • Publication number: 20210214846
    Abstract: The present disclosure pertains to embodiments of a showerhead assembly which can be used to deposit semiconductor layers using processes such as atomic layer deposition (ALD). The showerhead assembly has a showerhead which has an increased thickness which advantageously decreases reactor chamber size and decreases cycling time. Decreased cycling time can improve throughput and decrease costs.
    Type: Application
    Filed: January 14, 2021
    Publication date: July 15, 2021
    Inventors: Dinkar Nandwana, Carl Louis White, Eric James Shero, William George Petro, Herbert Terhorst, Gnyanesh Trivedi, Mark Olstad, Ankit Kimtee, Kyle Fondurulia, Michael Schmotzer, Jereld Lee Winkler
  • Publication number: 20210210373
    Abstract: A reactor system may comprise a reaction chamber enclosed by a chamber sidewall, and a susceptor disposed in the reaction chamber between a reaction space and a lower chamber space comprised in the reaction chamber. The susceptor may comprise a pin hole disposed through the susceptor such that the pin hole is in fluid communication with the reaction space and the lower chamber space, and such that the reaction space is in fluid communication with the lower chamber space. A lift pin may be disposed in the pin hole. The lift pin may comprise a pin body comprising a pin channel, defined by a pin channel surface, disposed in the pin body such that the reaction space is in fluid communication with the lower chamber space when the lift pin is disposed in the pin hole.
    Type: Application
    Filed: January 4, 2021
    Publication date: July 8, 2021
    Inventors: Govindarajasekhar Singu, Dinkar Nandwana, Todd Robert Dunn, Shankar Swaminathan, Bhushan Zope, Carl Louis White
  • Publication number: 20210118668
    Abstract: The present disclosure pertains to embodiments of a semiconductor deposition reactor manifold and methods of using the semiconductor deposition reactor manifold which can be used to deposit semiconductor layers using processes such as atomic layer deposition (ALD). The semiconductor deposition reactor manifold has a bore, a first supply channel, and a second supply channel. Advantageously, the first supply channel and the second supply channel merge with the bore in an offset fashion which leads to reduced cross-contamination within the supply channels.
    Type: Application
    Filed: October 20, 2020
    Publication date: April 22, 2021
    Inventors: Dinkar Nandwana, Eric James Shero, Carl Louis White, Todd Robert Dunn, William George Petro, Jereld Lee Winkler, Aniket Chitale
  • Publication number: 20200299836
    Abstract: Herein disclosed are systems and methods related to semiconductor processing device including a manifold including a bore configured to deliver a gas to a reaction chamber, the manifold including a first block mounted to a second block, the first and second mounted blocks cooperating to at least partially define the bore. A supply channel provides fluid communication between a gas source and the bore, and the supply channel is disposed at least partially in the second block. A metallic seal is disposed about the bore at an interface between the first and second block. Advantageously, the metallic seal improves sealing between the interface between the first block and the second block.
    Type: Application
    Filed: March 9, 2020
    Publication date: September 24, 2020
    Inventors: Dinkar Nandwana, Jereld Lee Winkler, Eric James Shero, Todd Robert Dunn, Carl Louis White
  • Patent number: D990534
    Type: Grant
    Filed: September 11, 2020
    Date of Patent: June 27, 2023
    Assignee: ASM IP Holding B.V.
    Inventors: Shreyans Kedia, Daniel Maurice, Govindarajasekhar Singu, Dinkar Nandwana, Frank Wing-Fung Cheng