Patents by Inventor Iqbal Shareef

Iqbal Shareef 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: 9335768
    Abstract: A multi-line mass flow device configured for controlled delivery of two or more fluids into a process chamber. The multi-line mass flow device comprises a cluster mass flow control manifold and a multi-inlet manifold. The cluster mass flow control manifold comprises a controller, a gas manifold mounting block, and two or more gas flow control stations. The multi-inlet manifold comprises a multi-inlet mounting block, and two or more isolation valves mounted on the multi-inlet mounting block.
    Type: Grant
    Filed: September 12, 2013
    Date of Patent: May 10, 2016
    Assignee: LAM RESEARCH CORPORATION
    Inventors: Mark Taskar, Iqbal Shareef
  • Publication number: 20160111258
    Abstract: A gas supply delivery arrangement of a plasma processing system for processing a substrate with gases introduced through at least first, second, and third gas injection zones comprises process gas supply inlets and tuning gas inlets. A mixing manifold comprises gas sticks in fluid communication with a process gas supply and tuning gas sticks in fluid communication with a tuning gas supply. A first gas outlet delivers gas to the first gas injection zone, a second gas outlet delivers gas to the second gas injection zone, and a third gas outlet delivers gas to the third gas injection zone. A gas splitter is in fluid communication with the mixing manifold, and includes a first valve arrangement which splits mixed gas exiting the mixing manifold into a first mixed gas supplied to the first gas outlet and a second mixed gas supplied to the second, and/or third gas outlets.
    Type: Application
    Filed: October 19, 2015
    Publication date: April 21, 2016
    Applicant: Lam Research Corporation
    Inventors: Mark Taskar, Iqbal Shareef, Anthony Zemlock, Ryan Bise, Nathan Kugland
  • Publication number: 20160076989
    Abstract: A corrosion sensor retainer assembly and method for predicting and detecting corrosion within a gas delivery system of a semiconductor substrate processing apparatus. The corrosion sensor retainer assembly comprises a laminate that includes a first insulating layer with a first port and a second insulating layer with a second port, wherein the first port and the second port are configured to retain a seal. The corrosion sensor retainer assembly includes a conductor housed within the laminate. The conductor forms a path that extends around the first port and the second port. At least a portion of the conductor has an exposed surface with a property that changes in the presence of corrosive gas or acid.
    Type: Application
    Filed: September 17, 2014
    Publication date: March 17, 2016
    Inventors: Mark Taskar, Iqbal Shareef, Anthony Zemlock
  • Publication number: 20160045941
    Abstract: Ultrasonic cleaning apparatuses and methods of cleaning substantially planar articles. An apparatus comprises (i) a substantially circular tank; (ii) a plurality of cleaning fluid inlets for delivering a cleaning fluid to the tank; (iii) an intermediate support for receiving an article to be cleaned; and (iv) an ultrasonic generator coupled to the tank for generating ultrasonic waves in the tank and cleaning fluid received therein. The apparatus is configured to remove particles from a substantially planar article and have them carried by flow of cleaning fluid away from the article and out of the tank. Using such an apparatus, a cleaning method comprises introducing a substantially planar article to be cleaned into the tank; introducing a cleaning fluid into the tank through the plurality of cleaning fluid inlets; and exciting the cleaning fluid with ultrasonic waves.
    Type: Application
    Filed: October 29, 2015
    Publication date: February 18, 2016
    Inventors: Evangelos T. Spyropoulos, Iqbal A. Shareef, Clifford Erik La Croix
  • Patent number: 9174249
    Abstract: Ultrasonic cleaning apparatuses and methods of cleaning substantially planar articles. An apparatus comprises (i) a substantially circular tank; (ii) a plurality of cleaning fluid inlets for delivering a cleaning fluid to the tank; (iii) an intermediate support for receiving an article to be cleaned; and (iv) an ultrasonic generator coupled to the tank for generating ultrasonic waves in the tank and cleaning fluid received therein. The apparatus is configured to remove particles from a substantially planar article and have them carried by flow of cleaning fluid away from the article and out of the tank. Using such an apparatus, a cleaning method comprises introducing a substantially planar article to be cleaned into the tank; introducing a cleaning fluid into the tank through the plurality of cleaning fluid inlets; and exciting the cleaning fluid with ultrasonic waves.
    Type: Grant
    Filed: December 12, 2012
    Date of Patent: November 3, 2015
    Assignee: Lam Research Corporation
    Inventors: Evangelos T. Spyropoulos, Iqbal A. Shareef, Clifford Erik La Croix
  • Patent number: 9175808
    Abstract: A method and apparatus is provided for decreasing the scrubber exhaust from gas panels, lower the cost of operation, lower the facilitation cost and power consumption by increasing the air velocity in areas of high potential risk of ignition. The apparatus includes a supply of compressed dry air (CDA) through the tubing with individual dispersion nozzles. The CDA dispersion nozzles can be installed at various key locations in order to provide additional ventilation turbulence and reduce potential dead zones inside the gas panel. Aspects of the invention help to save the energy and protect the environment by reducing the power consumption. In addition human safety shall be improved by minimizing the potential risk of ignition.
    Type: Grant
    Filed: August 30, 2011
    Date of Patent: November 3, 2015
    Assignee: Lam Research Corporation
    Inventors: Mark Taskar, Iqbal Shareef
  • Publication number: 20150303035
    Abstract: A gas supply system for providing a plurality of process gases to a process chamber includes a plurality of mass flow controllers each arranged to receive a respective subset of the plurality of process gases. Each of the respective subsets includes more than one of the process gases, and at least one of the process gases is provided to more than one of the plurality of mass flow controllers. Respective valves are arranged upstream of each of the plurality of mass flow controllers to selectively provide the respective subsets to the mass flow controllers. A first quantity of the plurality of mass flow controllers is less than a total number of the plurality of process gases to be supplied to the process chamber. The first quantity is equal to a maximum number of the plurality of process gases to be used in the process chamber at any one time.
    Type: Application
    Filed: June 29, 2015
    Publication date: October 22, 2015
    Inventors: Iqbal Shareef, Mark Taskar, Evangelos Spyropoulos
  • Publication number: 20150287572
    Abstract: A method of making a monolithic ceramic component of a gas delivery system of a semiconductor substrate processing apparatus wherein the gas delivery system is configured to supply process gas to a gas distribution member disposed downstream thereof. The gas distribution member is configured to supply the process gas to a processing region of a vacuum chamber of the apparatus, wherein the processing region is disposed above an upper surface of a semiconductor substrate to be processed. The method comprises preparing a green compact of ceramic material. The green compact of ceramic material is formed into a form of a desired monolithic ceramic component of the gas delivery system. The formed green compact of ceramic material is fired to form the monolithic ceramic component of the gas delivery system.
    Type: Application
    Filed: April 1, 2015
    Publication date: October 8, 2015
    Applicant: Lam Research Corporation
    Inventors: John Daugherty, Iqbal Shareef, Mike Ingamells
  • Publication number: 20150287573
    Abstract: A gas delivery apparatus for supplying process gas to a processing chamber of a plasma processing apparatus includes a mixing manifold having a plurality of gas inlets on a surface thereof, the gas inlets being equally spaced from a center mixing point of the mixing manifold; and optionally a plurality of gas supplies in communication with the plurality of gas inlets on the surface of the mixing manifold. A method of supplying gas to a processing chamber of a plasma processing apparatus using such a gas delivery apparatus involves providing a plurality of gas supplies in communication with a plurality of gas inlets on a surface of a mixing manifold; flowing at least two different gases from the plurality of gas supplies to the mixing manifold to create a first mixed gas; and supplying the first mixed gas to a plasma processing chamber coupled downstream of the mixing manifold.
    Type: Application
    Filed: April 7, 2015
    Publication date: October 8, 2015
    Applicant: LAM RESEARCH CORPORATION
    Inventors: Mark Taskar, Iqbal Shareef
  • Patent number: 9090972
    Abstract: A gas supply subsystem for providing a set of process gases to a substrate processing chamber, the set of process gases being a subset of a plurality of process gases available to the substrate processing chamber. The gas supply subsystem has fewer multi-gas mass flow controllers than the number of available process gases, wherein multiple process gases are multiplexed at the input of one or more of the multi-gas mass flow controllers. Pump-purge may be employed to improve gas switching speed for the multi-gas mass flow controllers.
    Type: Grant
    Filed: December 31, 2012
    Date of Patent: July 28, 2015
    Assignee: Lam Research Corporation
    Inventors: Iqbal Shareef, Mark Taskar, Evangelos Spyropoulos
  • Patent number: 9091397
    Abstract: Apparatus and methods for sharing a gas panel among a plurality of multi-zone gas feed chambers of a plasma processing chamber. Each multi-zone gas feed chamber is provided with its own multi-zone gas feed device to adjustably split the incoming gas flow into each chamber and provide the different gas flows to different zones of the multi-zone gas feed chamber.
    Type: Grant
    Filed: July 13, 2012
    Date of Patent: July 28, 2015
    Assignee: LAM RESEARCH CORPORATION
    Inventors: Iqbal Shareef, Piyush Agarwal, Evangelos Spyropoulos, Mark Taskar
  • Publication number: 20150155187
    Abstract: A system and method for processing a substrate in a processing chamber and providing an azimuthally evenly distributed draw on the processing byproducts using a gas pump down source coupled to the processing chamber above the plane of a substrate support within the processing chamber. The process chamber can include an annular plenum disposed between the support surface plane and the chamber top, the plenum including at least one vacuum inlet port coupled to the gas pump down source and a continuous inlet gap proximate to a perimeter of the substrate support, the continuous inlet gap having an inlet gas flow resistance of between about twice and about twenty times an outlet gas flow resistance the at least one vacuum inlet port.
    Type: Application
    Filed: December 4, 2013
    Publication date: June 4, 2015
    Applicant: LAM RESEARCH CORPORATION
    Inventors: Iqbal Shareef, Piyush Agarwal, Jason Augustino, Andreas Fischer
  • Patent number: 9004086
    Abstract: A processing chamber for post-wet-etch removing of drying fluid (DF) is disclosed. The chamber includes a chamber wall surrounding a processing volume and a plurality of nozzles disposed annularly about the processing volume and arranged into a set of nozzle rows that includes at least one nozzle row. The chamber also includes a plenum and a set of manifolds coupled to the plurality of nozzles to deliver the supercritical CO2 to the plurality of nozzles. Each nozzle has a nozzle outlet directed toward an interior portion of the processing volume and the nozzles are configured to flow the supercritical CO2 toward the substrates in a manner that minimizes recirculation loops and vortices.
    Type: Grant
    Filed: November 4, 2010
    Date of Patent: April 14, 2015
    Assignee: Lam Research Corporation
    Inventors: Ronda K. Nixon, Iqbal A. Shareef, Mark I. Wagner, Robert McAndrew, Tony Ray Kroeker
  • Publication number: 20150068613
    Abstract: A multi-line mass flow device configured for controlled delivery of two or more fluids into a process chamber. The multi-line mass flow device comprises a cluster mass flow control manifold and a multi-inlet manifold. The cluster mass flow control manifold comprises a controller, a gas manifold mounting block, and two or more gas flow control stations. The multi-inlet manifold comprises a multi-inlet mounting block, and two or more isolation valves mounted on the multi-inlet mounting block.
    Type: Application
    Filed: September 12, 2013
    Publication date: March 12, 2015
    Applicant: Lam Research Corporation
    Inventors: Mark Taskar, Iqbal Shareef
  • Publication number: 20140343875
    Abstract: A method of calculating a transient flow rate of a flowed process gas comprises flowing process gas through a mass flow controller into a chamber of known volume and measuring successive data sample points which include pressure data, temperature data, and a time value for each successive data sample point. Groups of successive data sample points are identified wherein each group shares one or more successive data sample points with another group, and ratio values are calculated for each of the successive data sample points wherein each ratio value is a ratio between the pressure data and a product of temperature and gas compressibility data for each respective time value.
    Type: Application
    Filed: May 16, 2013
    Publication date: November 20, 2014
    Applicant: Lam Research Corporation
    Inventors: Evangelos Spyropoulos, Iqbal Shareef
  • Patent number: 8851113
    Abstract: Methods and apparatus for shared gas panel for supplying a process gas to a plurality of process modules are disclosed. The shared gas panel includes a plurality of mixing valves and at least two mixing manifolds for a given mixing valve to service at least two process modules. The mixing manifolds are disposed on a given plane and staggered to save space. Components of the shared gas panel are also stacked vertically in order to reduce volume of the shared gas panel enclosure. Components are optimized such that the two mixing manifolds coupled to the given mixing valve receive equal mass flow to eliminate matching issues.
    Type: Grant
    Filed: March 27, 2012
    Date of Patent: October 7, 2014
    Assignee: Lam Research Coporation
    Inventors: Mark Taskar, Iqbal Shareef
  • Patent number: 8794267
    Abstract: In one embodiment, an apparatus for providing a gas mixture of a plurality of gases, may have a plurality of mass flow controllers (MFCs), a mixing manifold in fluid connection with each plurality of MFCs, a plurality of mixing manifold exits positioned on the mixing manifold; and an isolation device in fluid connection with each of the plurality of mixing manifold exits.
    Type: Grant
    Filed: December 17, 2008
    Date of Patent: August 5, 2014
    Assignee: Lam Research Corporation
    Inventors: Iqbal Shareef, Mark Taskar, Tony Zemlock
  • Publication number: 20140182689
    Abstract: A gas supply subsystem for providing a set of process gases to a substrate processing chamber, the set of process gases being a subset of a plurality of process gases available to the substrate processing chamber. The gas supply subsystem has fewer multi-gas mass flow controllers than the number of available process gases, wherein multiple process gases are multiplexed at the input of one or more of the multi-gas mass flow controllers.
    Type: Application
    Filed: December 31, 2012
    Publication date: July 3, 2014
    Applicant: LAM RESEARCH CORPORATION
    Inventors: Iqbal Shareef, Mark Taskar, Evangelos Spyropoulos
  • Publication number: 20140158153
    Abstract: Ultrasonic cleaning apparatuses and methods of cleaning substantially planar articles. An apparatus comprises (i) a substantially circular tank; (ii) a plurality of cleaning fluid inlets for delivering a cleaning fluid to the tank; (iii) an intermediate support for receiving an article to be cleaned; and (iv) an ultrasonic generator coupled to the tank for generating ultrasonic waves in the tank and cleaning fluid received therein. The apparatus is configured to remove particles from a substantially planar article and have them carried by flow of cleaning fluid away from the article and out of the tank. Using such an apparatus, a cleaning method comprises introducing a substantially planar article to be cleaned into the tank; introducing a cleaning fluid into the tank through the plurality of cleaning fluid inlets; and exciting the cleaning fluid with ultrasonic waves.
    Type: Application
    Filed: December 12, 2012
    Publication date: June 12, 2014
    Applicant: LAM RESEARCH CORPORATION
    Inventors: Evangelos T. Spyropoulos, Iqbal A. Shareef, Clifford Erik La Croix
  • Publication number: 20130255883
    Abstract: Methods and apparatus for supplying gas in a plasma processing system that employs the single line drop approach wherein a regulator is shared among multiple mass flow controllers. In one or more embodiments, an accumulator is provided and coupled in gaseous communication with a shared manifold to reduce pressure spikes and dips. A filter, which may be replaceable or non-replaceable separate from the accumulator, is integrated with the accumulator in one or more embodiments.
    Type: Application
    Filed: March 27, 2012
    Publication date: October 3, 2013
    Inventors: Iqbal A. Shareef, Evangelos Spyropoulos, Mark Taskar