Patents by Inventor Ronald W. Nunes

Ronald W. Nunes 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: 9418692
    Abstract: A magnetic data storage medium includes an ion doped magnetic recording layer having a continuous grading of coercivity or anisotropy. The medium also includes an ion-doped overcoat having an ion density that is at a maximum substantially at the interface with the recording layer and has a continuous grading of ion density between the overcoat and the recording layer. The coercivity is at a minimum substantially at the interface.
    Type: Grant
    Filed: October 9, 2014
    Date of Patent: August 16, 2016
    Assignees: INTERNATIONAL BUSINESS MACHINES CORPORATION, NATIONAL UNIVERSITY OF SINGAPORE
    Inventors: Charanjit Singh Bhatia, Koashal Kishor Mani Pandey, Nikita Gaur, Siegfried L. Maurer, Ronald W. Nunes
  • Publication number: 20150118521
    Abstract: A magnetic data storage medium includes an ion doped magnetic recording layer having a continuous grading of coercivity or anisotropy. The medium also includes an ion-doped overcoat having an ion density that is at a maximum substantially at the interface with the recording layer and has a continuous grading of ion density between the overcoat and the recording layer. The coercivity is at a minimum substantially at the interface.
    Type: Application
    Filed: October 9, 2014
    Publication date: April 30, 2015
    Inventors: Charanjit Singh Bhatia, Koashal Kishor Mani Pandey, Nikita Gaur, Siegfried L. Maurer, Ronald W. Nunes
  • Patent number: 8900730
    Abstract: A magnetic data storage medium comprising: an ion doped magnetic recording layer having a continuous grading of coercivity or anisotropy, wherein the coercivity or anisotropy is at a minimum substantially at one side of the magnetic recording layer, and having substantial portion of maximum coercivity or anisotropy at the other side of the magnetic recording layer. Also, a method of fabricating a magnetic data storage medium is included.
    Type: Grant
    Filed: January 31, 2012
    Date of Patent: December 2, 2014
    Assignee: International Business Machines Corporation
    Inventors: Charanjit Singh Bhatia, Koashal Kishor Mani Pandey, Nikita Gaur, Siegfried L. Maurer, Ronald W. Nunes
  • Publication number: 20140187460
    Abstract: Methods for removing a masking material, for example, a photoresist, and electronic devices formed by removing a masking material are presented. For example, a method for removing a masking material includes contacting the masking material with a solution comprising cerium. The cerium may be comprised in a salt. The salt may be cerium ammonium nitrate.
    Type: Application
    Filed: January 3, 2013
    Publication date: July 3, 2014
    Applicant: ADVANCED TECHNOLOGY MATERIALS, INC.
    Inventors: Ali Afzali-Ardakani, Emanuel Israel Cooper, Mahmoud Khojasteh, Ronald W. Nunes, George Gabriel Totir
  • Publication number: 20130320254
    Abstract: A magnetic data storage medium comprising: an ion doped magnetic recording layer having a continuous grading of coercivity or anisotropy, wherein the coercivity or anisotropy is at a minimum substantially at one side of the magnetic recording layer, and having substantial portion of maximum coercivity or anisotropy at the other side of the magnetic recording layer. Also, a method of fabricating a magnetic data storage medium is included.
    Type: Application
    Filed: January 31, 2012
    Publication date: December 5, 2013
    Applicants: National University of Singapore, International Business Machines Corporation
    Inventors: Charanjit Singh Bhatia, Koashal Kishor Mani Pandey, Nikita Gaur, Siegfried L. Maurer, Ronald W. Nunes
  • Patent number: 8563408
    Abstract: A spin-on formulation that is useful in stripping an ion implanted photoresist is provided that includes an aqueous solution of a water soluble polymer containing at least one acidic functional group, and at least one lanthanide metal-containing oxidant. The spin-on formulation is applied to an ion implanted photoresist and baked to form a modified photoresist. The modified photoresist is soluble in aqueous, acid or organic solvents. As such one of the aforementioned solvents can be used to completely strip the ion implanted photoresist as well as any photoresist residue that may be present. A rinse step can follow the stripping of the modified photoresist.
    Type: Grant
    Filed: June 28, 2012
    Date of Patent: October 22, 2013
    Assignee: International Business Machines Corporation
    Inventors: Ali Afzali-Ardakani, Mahmoud Khojasteh, Ronald W. Nunes, George G. Totir
  • Patent number: 8455420
    Abstract: A spin-on formulation that is useful in stripping an ion implanted photoresist is provided that includes an aqueous solution of a water soluble polymer containing at least one acidic functional group, and at least one lanthanide metal-containing oxidant. The spin-on formulation is applied to an ion implanted photoresist and baked to form a modified photoresist. The modified photoresist is soluble in aqueous, acid or organic solvents. As such one of the aforementioned solvents can be used to completely strip the ion implanted photoresist as well as any photoresist residue that may be present. A rinse step can follow the stripping of the modified photoresist.
    Type: Grant
    Filed: June 28, 2012
    Date of Patent: June 4, 2013
    Assignee: International Business Machines Corporation
    Inventors: Ali Afzali-Ardakani, Mahmoud Khojasteh, Ronald W. Nunes, George G. Totir
  • Patent number: 8367555
    Abstract: Methods for removing a masking material, for example, a photoresist, and electronic devices formed by removing a masking material are presented. For example, a method for removing a masking material includes contacting the masking material with a solution comprising cerium. The cerium may be comprised in a salt. The salt may be cerium ammonium nitrate.
    Type: Grant
    Filed: December 11, 2009
    Date of Patent: February 5, 2013
    Assignees: International Business Machines Corporation, Advanced Technology Materials, Inc.
    Inventors: Ali Afzali-Ardakani, Emanuel Israel Cooper, Mahmoud Khojasteh, Ronald W. Nunes, George Gabriel Totir
  • Publication number: 20120276724
    Abstract: A spin-on formulation that is useful in stripping an ion implanted photoresist is provided that includes an aqueous solution of a water soluble polymer containing at least one acidic functional group, and at least one lanthanide metal-containing oxidant. The spin-on formulation is applied to an ion implanted photoresist and baked to form a modified photoresist. The modified photoresist is soluble in aqueous, acid or organic solvents. As such one of the aforementioned solvents can be used to completely strip the ion implanted photoresist as well as any photoresist residue that may be present. A rinse step can follow the stripping of the modified photoresist.
    Type: Application
    Filed: June 28, 2012
    Publication date: November 1, 2012
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Ali Afzali-Ardakani, Mahmoud Khojasteh, Ronald W. Nunes, George G. Totir
  • Publication number: 20120270763
    Abstract: A spin-on formulation that is useful in stripping an ion implanted photoresist is provided that includes an aqueous solution of a water soluble polymer containing at least one acidic functional group, and at least one lanthanide metal-containing oxidant. The spin-on formulation is applied to an ion implanted photoresist and baked to form a modified photoresist. The modified photoresist is soluble in aqueous, acid or organic solvents. As such one of the aforementioned solvents can be used to completely strip the ion implanted photoresist as well as any photoresist residue that may be present. A rinse step can follow the stripping of the modified photoresist.
    Type: Application
    Filed: June 28, 2012
    Publication date: October 25, 2012
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Ali Afzali-Ardakani, Mahmoud Khojasteh, Ronald W. Nunes, George G. Totir
  • Patent number: 8252673
    Abstract: A spin-on formulation that is useful in stripping an ion implanted photoresist is provided that includes an aqueous solution of a water soluble polymer containing at least one acidic functional group, and at least one lanthanide metal-containing oxidant. The spin-on formulation is applied to an ion implanted photoresist and baked to form a modified photoresist. The modified photoresist is soluble in aqueous, acid or organic solvents. As such one of the aforementioned solvents can be used to completely strip the ion implanted photoresist as well as any photoresist residue that may be present. A rinse step can follow the stripping of the modified photoresist.
    Type: Grant
    Filed: December 21, 2009
    Date of Patent: August 28, 2012
    Assignee: International Business Machines Corporation
    Inventors: Ali Afzali-Ardakani, Mahmoud Khojasteh, Ronald W. Nunes, George G. Totir
  • Publication number: 20110151653
    Abstract: A spin-on formulation that is useful in stripping an ion implanted photoresist is provided that includes an aqueous solution of a water soluble polymer containing at least one acidic functional group, and at least one lanthanide metal-containing oxidant. The spin-on formulation is applied to an ion implanted photoresist and baked to form a modified photoresist. The modified photoresist is soluble in aqueous, acid or organic solvents. As such one of the aforementioned solvents can be used to completely strip the ion implanted photoresist as well as any photoresist residue that may be present. A rinse step can follow the stripping of the modified photoresist.
    Type: Application
    Filed: December 21, 2009
    Publication date: June 23, 2011
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Ali Afzali-Ardakani, Mahmoud Khojasteh, Ronald W. Nunes, George G. Totir
  • Publication number: 20110140181
    Abstract: Methods for removing a masking material, for example, a photoresist, and electronic devices formed by removing a masking material are presented. For example, a method for removing a masking material includes contacting the masking material with a solution comprising cerium. The cerium may be comprised in a salt. The salt may be cerium ammonium nitrate.
    Type: Application
    Filed: December 11, 2009
    Publication date: June 16, 2011
    Applicants: International Business Machines Corporation, Advanced Technology Materials, Inc.
    Inventors: Ali Afzali-Ardakani, Emanuel Israel Cooper, Mahmoud Khojasteh, Ronald W. Nunes, George Gabriel Totir
  • Patent number: 6792856
    Abstract: Disclosed is a printing apparatus, having a print surface lying in a print plane defined by an imaginary x-axis and y-axis, the print surface having an outward normal pointing in the positive direction along an imaginary z-axis, such that the x-axis, y-axis, and z-axis are substantially orthogonal to one another, a lower stamp clamp disposed adjacent to the negative-x edge of the print surface, an upper stamp clamp, moveable in two dimensions in a trajectory plane defined by the x-axis and z-axis, a stamp comprising a flexible material, the stamp having a first end attached to the lower stamp clamp and a second end attached to the upper stamp clamp, such that a cross section of the stamp parallel to the trajectory plane forms an arc extending from an origin point Q on the lower stamp clamp having (x,z) coordinates (0,0) to point E on the upper stamp clamp, this arc being described by the mathematical function &thgr;(s), where s is the curvilinear distance along the arc measured from point Q, and &thgr; is the
    Type: Grant
    Filed: July 16, 2002
    Date of Patent: September 21, 2004
    Assignee: International Business Machines Corporation
    Inventors: Shawn Anthony Hall, Ronald W. Nunes, Robert H. Fair, William J. Surovic, Istvan Lovas, Robert Scott Emmans
  • Publication number: 20040011231
    Abstract: Disclosed is a printing apparatus, having a print surface lying in a print plane defined by an imaginary x-axis and y-axis, the print surface having an outward normal pointing in the positive direction along an imaginary z-axis, such that the x-axis, y-axis, and z-axis are substantially orthogonal to one another, a lower stamp clamp disposed adjacent to the negative-x edge of the print surface, an upper stamp clamp, moveable in two dimensions in a trajectory plane defined by the x-axis and z-axis, a stamp comprising a flexible material, the stamp having a first end attached to the lower stamp clamp and a second end attached to the upper stamp clamp, such that a cross section of the stamp parallel to the trajectory plane forms an arc extending from an origin point Q on the lower stamp clamp having (x,z) coordinates (0,0) to point E on the upper stamp clamp, this arc being described by the mathematical function &thgr;(s), where s is the curvilinear distance along the arc measured from point Q, and &thgr; is the
    Type: Application
    Filed: July 16, 2002
    Publication date: January 22, 2004
    Applicant: International Business Machines Corporation
    Inventors: Shawn Anthony Hall, Ronald W. Nunes, Robert H. Fair, William J. Surovic, Istvan Lovas, Robert Scott Emmans
  • Patent number: 6673287
    Abstract: A method of exposing a composite organic/inorganic master to alkylchlorosilanes in the vapor phase. Chlorosilanes participate in facile reactions with hydroxyl groups existing on the surface of inorganic oxides (such as glass or the native oxides on silicon, aluminum, tin, etc.); or those in organics-containing phenolic or alcoholic groups, such as photoresists. The alkyl group on the silane can be chosen from a large selection of aliphatic or aromatic organic groups that have substituents with varying polarity and reactivity.
    Type: Grant
    Filed: May 16, 2001
    Date of Patent: January 6, 2004
    Assignee: International Business Machines Corporation
    Inventors: Tricia L. Breen, Laura L. Kosbar, Michael P. Mastro, Ronald W. Nunes
  • Publication number: 20020172895
    Abstract: A method of exposing a composite organic/inorganic master to alkylchlorosilanes in the vapor phase. Chlorosilanes participate in facile reactions with hydroxyl groups existing on the surface of inorganic oxides (such as glass or the native oxides on silicon, aluminum, tin, etc.); or those in organics-containing phenolic or alcoholic groups, such as photoresists. The alkyl group on the silane can be chosen from a large selection of aliphatic or aromatic organic groups that have substituents with varying polarity and reactivity.
    Type: Application
    Filed: May 16, 2001
    Publication date: November 21, 2002
    Inventors: Tricial L. Breen, Laura L. Kosbar, Michael P. Mastro, Ronald W. Nunes
  • Patent number: 6190955
    Abstract: Improved trench forming methods for semiconductor substrates using BSG avoid the problems associated with conventional TEOS hard mask techniques. The methods comprise: (a) providing a semiconductor substrate, (b) applying a conformal layer of borosilicate glass (BSG) on the substrate; (c) forming a patterned photoresist layer over the BSG layer whereby a portion of a layer underlying the photoresist layer is exposed, (d) anisotropically etching through the exposed portion of the underlying layer, through any other layers lying between the photoresist layer and the semiconductor substrate, and into the semiconductor substrate, thereby forming a trench in the semiconductor substrate. Preferably, one or more dielectric layers are present on the substrate surface prior to application of the BSG layer. One or more chemical barrier and/or organic antireflective coating layers may be applied over the BSG layer between the BSG layer and the photoresist layer.
    Type: Grant
    Filed: January 27, 1998
    Date of Patent: February 20, 2001
    Assignees: International Business Machines Corporation, Infineon Technologies North America Corp., Kabushiki Kaisha Toshiba
    Inventors: Matthias Ilg, Richard L. Kleinhenz, Soichi Nadahara, Ronald W. Nunes, Klaus Penner, Klaus Roithner, Radhika Srinivasan, Shigeki Sugimoto
  • Patent number: 5919597
    Abstract: Methods are provided to prepare photoresists without isolation of various components, i.e. in a "one-pot" procedure. Preferred one-pot preparation methods of the invention include preparing a photoresist resin binder in a selected photoresist solvent and, without isolation of the resin binder from the solvent, adding a photoactive component and any other desired photoresist materials to the resin binder in solution to thereby provide a liquid photoresist composition in the solvent in which the resin binder was prepared. The invention also provides novel methods for synthesizing resist resin binders, particularly phenolic polymers that contain phenolic OH groups covalently bonded to another moiety such as acid labile groups or inert blocking groups.
    Type: Grant
    Filed: October 30, 1997
    Date of Patent: July 6, 1999
    Assignees: IBM Corporation of Armonk, Shipley Company, L.L.C. of Marlborough
    Inventors: Roger F. Sinta, Uday Kumar, George W. Orsula, James I. T. Fahey, William R. Brunsvold, Wu-Song Huang, Ahmad D. Katnani, Ronald W. Nunes, Mahmoud M. Khojasteh
  • Patent number: 5457005
    Abstract: A dry developable photoresist composition that contains in admixture a polymeric epoxide; a di- or polyfunctional organosilicon material; and an onium salt; and use thereof to produce an image.
    Type: Grant
    Filed: July 2, 1993
    Date of Patent: October 10, 1995
    Assignee: International Business Machines Corporation
    Inventors: Edward D. Babich, Jeffrey D. Gelorme, Ronald W. Nunes, Sharon L. Nunes, Jurij R. Paraszczak, Russell J. Serino