Patents by Inventor Rahul Surana

Rahul Surana 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: 8293704
    Abstract: The present invention relates to crystalline forms of linaclotide, as well as to various methods and processes for the preparation and use of the crystalline forms.
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: October 23, 2012
    Inventors: Ritesh Sanghvi, Andreas Grill, Rahul Surana, Hiajian (Jim) Zhu
  • Publication number: 20120214750
    Abstract: The present invention relates to crystalline forms of linaclotide, as well as to various methods and processes for the preparation and use of the crystalline forms.
    Type: Application
    Filed: April 27, 2012
    Publication date: August 23, 2012
    Applicant: FOREST LABORATORIES HOLDINGS LTD.
    Inventors: Ritesh Sanghvi, Andreas Grill, Rahul Surana, Haijian Zhu
  • Patent number: 8222201
    Abstract: The present invention relates to crystalline forms of linaclotide, as well as to various methods and processes for the preparation and use of the crystalline forms.
    Type: Grant
    Filed: November 18, 2009
    Date of Patent: July 17, 2012
    Inventors: Ritesh Sanghvi, Andreas Grill, Rahul Surana, Haijian Zhu
  • Publication number: 20110144210
    Abstract: The present invention relates to stable dosage forms of levomilnacipran and pharmaceutically acceptable salts thereof. Processes for the preparation of these dosage forms and methods of using these dosage forms are also described.
    Type: Application
    Filed: January 14, 2011
    Publication date: June 16, 2011
    Applicant: FOREST LABORATORIES HOLDINGS LTD.
    Inventors: Anil Chhettry, Murali Divi, Rahul Surana
  • Publication number: 20110112197
    Abstract: The present invention relates to novel crystalline forms of (1S,2R)-2-(amino methyl)-N,N-diethyl-1-phenyl cyclopropane carboxamide. Processes for the preparation of this form, compositions containing the form, and methods of use thereof are also described.
    Type: Application
    Filed: November 8, 2010
    Publication date: May 12, 2011
    Applicant: FOREST LABORATORIES HOLDINGS LTD.
    Inventors: Mahendra G. Dedhiya, Rahul Surana
  • Patent number: 7848839
    Abstract: A system, method and medium of detecting a transition interface between a first dielectric material and an adjacent second dielectric material in a semiconductor wafer during a chemical-mechanical polishing process includes impinging an incident light of a predetermined wavelength on the semiconductor wafer at a first time, detecting at least one first intensity of at least one first reflected light, impinging the incident light of the predetermined wavelength on the semiconductor wafer at a second time, detecting at least one second intensity of at least one second reflected light, and determining a difference between the at least one first intensity and the at least one second intensity. If the difference between the at least one first intensity and the at least one second intensity is above a predetermined threshold, the chemical-mechanical polishing process is terminated.
    Type: Grant
    Filed: December 21, 2007
    Date of Patent: December 7, 2010
    Assignee: Applied Materials, Inc.
    Inventors: Ajoy Zutshi, Rahul Surana, Girish Dixit
  • Publication number: 20100125056
    Abstract: The present invention relates to crystalline forms of linaclotide, as well as to various methods and processes for the preparation and use of the crystalline forms.
    Type: Application
    Filed: November 18, 2009
    Publication date: May 20, 2010
    Inventors: Ritesh Sanghvi, Andreas Grill, Rahul Surana, Haijian Zhu
  • Publication number: 20080194638
    Abstract: The present invention relates to bioavailable pharmaceutical formulations of heterocyclic compounds, such as such as N-(3,5-dichloropyrid-4-yl)-4-difluoromethoxy-8-methanesulfonamido-dibenzo[b,d]furan-1-carboxamide (oglemilast) and pharmaceutically acceptable salts thereof, to processes for their preparation and to methods of treatment using the same. The present invention also relates to substantially pure amorphous forms of heterocyclic compounds, such as oglemilast. The invention is particularly directed to bioavailable pharmaceutical oral dosage forms containing amorphous oglemilast.
    Type: Application
    Filed: February 8, 2008
    Publication date: August 14, 2008
    Applicant: Forest Laboratories Holdings Limited
    Inventors: Mahendra G. DEDHIYA, Rahul Surana, Suneel K. Rastogi, Anil Chhetrry
  • Publication number: 20080109104
    Abstract: A system, method and medium of detecting a transition interface between a first dielectric material and an adjacent second dielectric material in a semiconductor wafer during a chemical-mechanical polishing process includes impinging an incident light of a predetermined wavelength on the semiconductor wafer at a first time, detecting at least one first intensity of at least one first reflected light, impinging the incident light of the predetermined wavelength on the semiconductor wafer at a second time, detecting at least one second intensity of at least one second reflected light, and determining a difference between the at least one first intensity and the at least one second intensity. If the difference between the at least one first intensity and the at least one second intensity is above a predetermined threshold, the chemical-mechanical polishing process is terminated.
    Type: Application
    Filed: December 21, 2007
    Publication date: May 8, 2008
    Inventors: Ajoy Zutshi, Rahul Surana, Girish Dixit
  • Patent number: 7354332
    Abstract: A technique of the present invention utilizes qualification characteristics from a single wafer for qualifying a semiconductor manufacturing tool. Generally speaking, the technique commences with the processing of a wafer by the manufacturing tool. During processing, one or more qualification characteristics required to properly qualify the tool are measured using an in situ sensor or metrology device. Subsequently, the manufacturing tool is qualified by adjusting one or more parameters of a recipe in accordance with the qualification characteristics measured from the wafer to target one or more manufacturing tool specifications. In some embodiments, the tool to be qualified includes a bulk removal polishing platen, a copper clearing platen and a barrier removal polishing platen.
    Type: Grant
    Filed: March 26, 2004
    Date of Patent: April 8, 2008
    Assignee: Applied Materials, Inc.
    Inventors: Rahul Surana, Ajoy Zutshi
  • Publication number: 20060079007
    Abstract: A system, method and medium of detecting a transition interface between a first dielectric material and an adjacent second dielectric material in a semiconductor wafer during a chemical-mechanical polishing process includes impinging an incident light of a predetermined wavelength on the semiconductor wafer at a first time, detecting at least one first intensity of at least one first reflected light, impinging the incident light of the predetermined wavelength on the semiconductor wafer at a second time, detecting at least one second intensity of at least one second reflected light, and determining a difference between the at least one first intensity and the at least one second intensity. If the difference between the at least one first intensity and the at least one second intensity is above a predetermined threshold, the chemical-mechanical polishing process is terminated.
    Type: Application
    Filed: October 8, 2004
    Publication date: April 13, 2006
    Applicant: Applied Materials, Inc.
    Inventors: Ajoy Zutshi, Rahul Surana, Girish Dixit
  • Patent number: 6960521
    Abstract: Method and apparatus are provided for polishing substrates comprising conductive and low k dielectric materials with reduced or minimum substrate surface damage and delamination. In one aspect, a method is provided for processing a substrate including positioning a substrate having a conductive material formed thereon in a polishing apparatus having one or more rotational carrier heads and one or more rotatable platens, wherein the carrier head comprises a retaining ring and a membrane for securing a substrate and the platen has a polishing article disposed thereon, contacting the substrate surface and the polishing article to each other at a retaining ring contact pressure of about 0.4 psi or greater than a membrane pressure, and polishing the substrate to remove conductive material.
    Type: Grant
    Filed: September 13, 2004
    Date of Patent: November 1, 2005
    Assignee: Applied Materials, Inc.
    Inventors: Yongsik Moon, David Mai, Kapila Wijekoon, Rajeev Bajaj, Rahul Surana, Yongqi Hu, Tony S. Kaushal, Shijian Li, Jui-Lung Li, Shi-Ping Wang, Gary Lam, Fred C. Redeker
  • Publication number: 20050032381
    Abstract: Method and apparatus are provided for polishing substrates comprising conductive and low k dielectric materials with reduced or minimum substrate surface damage and delamination. In one aspect, a method is provided for processing a substrate including positioning a substrate having a conductive material formed thereon in a polishing apparatus having one or more rotational carrier heads and one or more rotatable platens, wherein the carrier head comprises a retaining ring and a membrane for securing a substrate and the platen has a polishing article disposed thereon, contacting the substrate surface and the polishing article to each other at a retaining ring contact pressure of about 0.4 psi or greater than a membrane pressure, and polishing the substrate to remove conductive material.
    Type: Application
    Filed: September 13, 2004
    Publication date: February 10, 2005
    Inventors: Yongsik Moon, David Mai, Kapila Wijekoon, Rajeev Bajaj, Rahul Surana, Yongqi Hu, Tony Kaushal, Shijian Li, Jui-Lung Li, Shi-Ping Wang, Gary Lam, Fred Redeker
  • Publication number: 20050032459
    Abstract: A technique of the present invention utilizes qualification characteristics from a single wafer for qualifying a semiconductor manufacturing tool. Generally speaking, the technique commences with the processing of a wafer by the manufacturing tool. During processing, one or more qualification characteristics required to properly qualify the tool are measured using an in situ sensor or metrology device. Subsequently, the manufacturing tool is qualified by adjusting one or more parameters of a recipe in accordance with the qualification characteristics measured from the wafer to target one or more manufacturing tool specifications. In some embodiments, the tool to be qualified includes a bulk removal polishing platen, a copper clearing platen and a barrier removal polishing platen.
    Type: Application
    Filed: March 26, 2004
    Publication date: February 10, 2005
    Applicant: Applied Materials, Inc.
    Inventors: Rahul Surana, Ajoy Zutshi
  • Patent number: 6790768
    Abstract: Method and apparatus are provided for polishing substrates comprising conductive and low k dielectric materials with reduced or minimum substrate surface damage and delamination. In one aspect, a method is provided for processing a substrate including positioning a substrate having a conductive material formed thereon in a polishing apparatus having one or more rotational carrier heads and one or more rotatable platens, wherein the carrier head comprises a retaining ring and a membrane for securing a substrate and the platen has a polishing article disposed thereon, contacting the substrate surface and the polishing article to each other at a retaining ring contact pressure of about 0.4 psi or greater than a membrane pressure, and polishing the substrate to remove conductive material.
    Type: Grant
    Filed: December 18, 2001
    Date of Patent: September 14, 2004
    Assignee: Applied Materials Inc.
    Inventors: Yongsik Moon, David Mai, Kapila Wijekoon, Rajeev Bajaj, Rahul Surana, Yongqi Hu, Tony S. Kaushal, Shijian Li, Jui-Lung Li, Shi-Ping Wang, Gary Lam, Fred C. Redeker
  • Publication number: 20030029841
    Abstract: Method and apparatus are provided for polishing substrates comprising conductive and low k dielectric materials with reduced or minimum substrate surface damage and delamination. In one aspect, a method is provided for processing a substrate including positioning a substrate having a conductive material formed thereon in a polishing apparatus having one or more rotational carrier heads and one or more rotatable platens, wherein the carrier head comprises a retaining ring and a membrane for securing a substrate and the platen has a polishing article disposed thereon, contacting the substrate surface and the polishing article to each other at a retaining ring contact pressure of about 0.4 psi or greater than a membrane pressure, and polishing the substrate to remove conductive material.
    Type: Application
    Filed: December 18, 2001
    Publication date: February 13, 2003
    Applicant: Applied Materials, Inc.
    Inventors: Yongsik Moon, David Mai, Kapila Wijekoon, Rajeev Bajaj, Rahul Surana, Yongqi Hu, Tony S. Kaushal, Shijian Li, Jui-Lung Li, Shi-Ping Wang, Gary Lam, Fred C. Redeker