Patents by Inventor David M. Tung

David M. Tung 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: 20160178513
    Abstract: Provided herein is an apparatus, including an optical characterization device; a photon detector array configured to sequentially receive a first set of photons scattered from surface features of an article and a second set of photons scattered from surface features of the article and subsequently processed by the optical characterization device; and a chemical characterization means for chemically characterizing the surface features of the article, wherein the chemical characterization means is configured for processing the first set of photons received by the photon detector array and the second set of photons received by the photon detector array.
    Type: Application
    Filed: February 25, 2016
    Publication date: June 23, 2016
    Inventors: Joachim Walter Ahner, Samuel Kah Hean Wong, Maissarath Nassirou, Henry Luis Lott, David M. Tung, Florin Zavaliche, Stephen Keith McLaurin
  • Publication number: 20160169802
    Abstract: Provided herein is an apparatus, including a photon emitter configured to emit photons onto a surface of an article, a photon detector array configured to receive photons from surface features of the article; and a processing means configured for processing photon-detector-array signals corresponding to photons scattered from the surface features and photons fluoresced from the surface features, wherein the processing means is further configured for classifying the surface features of the article.
    Type: Application
    Filed: February 18, 2016
    Publication date: June 16, 2016
    Inventors: Joachim Walter Ahner, David M. Tung, Samuel Kah Hean Wong, Henry Luis Lott, Stephen Keith McLaurin, Maissarath Nassirou, Florin Zavaliche
  • Publication number: 20160139060
    Abstract: Provided herein is an apparatus, including a mapping means for generating a map of locations of surface features of an article based on photon-detector signals corresponding to photons scattered from the surface features of the article, and a surface feature manager. The surface manager is configured to locate a predetermined surface feature of the surface features of the article based, at least in part, on the map of the surface features locations, irradiate photons of a first power onto the location of the predetermined surface feature to analyze the predetermined surface feature, and irradiate photons of a second power onto the location of the predetermined surface feature to remove the predetermined surface feature.
    Type: Application
    Filed: January 22, 2016
    Publication date: May 19, 2016
    Inventors: Joachim Walter Ahner, David M. Tung
  • Patent number: 9297759
    Abstract: Provided herein is an apparatus, including a photon emitter configured to emit photons onto a surface of an article, a photon detector array configured to receive photons from surface features of the article; and a processing means configured for processing photon-detector-array signals corresponding to photons scattered from the surface features and photons fluoresced from the surface features, wherein the processing means is further configured for classifying the surface features of the article.
    Type: Grant
    Filed: September 19, 2013
    Date of Patent: March 29, 2016
    Assignee: Seagate Technology LLC
    Inventors: Joachim Walter Ahner, David M. Tung, Samuel Kah Hean Wong, Henry Luis Lott, Stephen Keith McLaurin, Maissarath Nassirou, Florin Zavaliche
  • Patent number: 9297751
    Abstract: Provided herein is an apparatus, including an optical characterization device; a photon detector array configured to sequentially receive a first set of photons scattered from surface features of an article and a second set of photons scattered from surface features of the article and subsequently processed by the optical characterization device; and a chemical characterization means for chemically characterizing the surface features of the article, wherein the chemical characterization means is configured for processing the first set of photons received by the photon detector array and the second set of photons received by the photon detector array.
    Type: Grant
    Filed: September 19, 2013
    Date of Patent: March 29, 2016
    Assignee: Seagate Technology LLC
    Inventors: Joachim Walter Ahner, Samuel Kah Hean Wong, Maissarath Nassirou, Henry Luis Lott, David M. Tung, Florin Zavaliche, Stephen Keith McLaurin
  • Publication number: 20160077009
    Abstract: Provided herein is an apparatus, including an excitation arm including excitation optics; a collection arm including collection optics, wherein the excitation arm and the collection arm are geometrically off-axis from one another for independent control of the excitation optics or the collection optics; and a full-surface spectroscopic analyzer to analyze a thin-film over an article from Raman-scattered light collected by the collection optics.
    Type: Application
    Filed: August 24, 2015
    Publication date: March 17, 2016
    Inventors: Daniel J. Gargas, David M. Tung, Travis W. Grodt, Joachim W. Ahner
  • Publication number: 20160069799
    Abstract: Provided herein is an apparatus including a photon emitter configured for reflecting photons from a surface of an article onto a first reflective surface. In addition, a second reflective surface is configured for reflecting photons from the surface of the article back onto the surface of the article. The apparatus also includes a detector configured to provide information corresponding to photons scattered from features of the article.
    Type: Application
    Filed: November 6, 2015
    Publication date: March 10, 2016
    Inventors: Joachim W. Ahner, David M. Tung, Stephen Keith McLaurin, Travis W. Grodt
  • Publication number: 20160069815
    Abstract: Provided herein is an apparatus including a photon emitter configured to emit photons onto a surface of an article. In addition, the apparatus includes a photon detector array configured to receive photons scattered from surface features and magnetic features of the article. The photon detector array is configured to provide information for mapping the magnetic features.
    Type: Application
    Filed: November 6, 2015
    Publication date: March 10, 2016
    Inventors: Joachim Walter Ahner, David M. Tung, Stephen Keith McLaurin
  • Publication number: 20160069814
    Abstract: Provided herein is an apparatus, including a photon emitter and a photon detector array. The photon emitter is configured to emit photons onto an entire surface edge of an article. The photon detector array is configured to receive scattered photons from the entire surface edge of the article, and includes a number of photon detectors. The scattered photons are photons emitted from the photon emitter that are scattered from features of the surface edge of the article.
    Type: Application
    Filed: October 29, 2015
    Publication date: March 10, 2016
    Inventors: David M. Tung, Joachim W. Ahner
  • Patent number: 9274064
    Abstract: Provided herein is an apparatus, including a mapping means for generating a map of locations of surface features of an article based on photon-detector signals corresponding to photons scattered from the surface features of the article, and a surface feature manager. The surface manager is configured to locate a predetermined surface feature of the surface features of the article based, at least in part, on the map of the surface features locations, irradiate photons of a first power onto the location of the predetermined surface feature to analyze the predetermined surface feature, and irradiate photons of a second power onto the location of the predetermined surface feature to remove the predetermined surface feature.
    Type: Grant
    Filed: February 28, 2014
    Date of Patent: March 1, 2016
    Assignee: Seagate Technology LLC
    Inventors: Joachim Walter Ahner, David M. Tung
  • Patent number: 9217715
    Abstract: Provided herein are apparatuses and methods related thereto, wherein at least one apparatus includes: a photon emitting means configured to emit photons, wherein the photons are scattered from magnetic features of an article; a photon detector array configured to receive scattered photons; and a processing means configured to differentiate the magnetic features from the scattered photons.
    Type: Grant
    Filed: February 28, 2014
    Date of Patent: December 22, 2015
    Assignee: Seagate Technology LLC
    Inventors: Joachim Walter Ahner, David M. Tung, Stephen Keith McLaurin
  • Patent number: 9217714
    Abstract: Provided herein is an apparatus, including a photon emitter configured for emitting photons onto a surface of an article; a first reflective surface and a second reflective surface configured to reflect the photons onto the surface of the article; and a processing means configured for processing signals from a photon detector array corresponding to photons scattered from surface features of the article.
    Type: Grant
    Filed: September 17, 2013
    Date of Patent: December 22, 2015
    Assignee: Seagate Technology LLC
    Inventors: Joachim W. Ahner, David M. Tung, Stephen Keith McLaurin, Travis W. Grodt
  • Patent number: 9201019
    Abstract: Provided herein is an apparatus, including a photon emitting means for emitting photons onto surface edges of an article, a photon detecting means for detecting photons scattered from particles on the surface edges of the article, and a mapping means for mapping a particle or a defect of the surface of the article.
    Type: Grant
    Filed: December 3, 2013
    Date of Patent: December 1, 2015
    Assignee: Seagate Technology LLC
    Inventors: David M. Tung, Joachim W. Ahner
  • Publication number: 20150285743
    Abstract: Provided herein is an apparatus including an imaging lens assembly configured to collect reflected light from a surface of an article; an image sensor configured to receive reflected light from the imaging lens assembly, wherein the imaging lens assembly and the image sensor are each arranged at different angles for focusing on substantially an entire surface of an article; and a processing means configured to process signals from the image sensor corresponding to polarized reflected light and subsequently generate one or more features maps.
    Type: Application
    Filed: May 16, 2014
    Publication date: October 8, 2015
    Applicant: SEAGATE TECHNOLOGY LLC
    Inventors: David M. Tung, Joachim Walter Ahner
  • Publication number: 20140354994
    Abstract: Provided herein is an apparatus, including at least two photon emitters, each with a preselected polarization orientation, and configured to emit polarized photons onto a surface of an article, and a processing means configured to process photon-detector-array signals corresponding to photons scattered from surface features of the article, and generate one or more surface features maps for the article from the photon-detector-array signals corresponding to the photons scattered from the surface features of the article.
    Type: Application
    Filed: February 28, 2014
    Publication date: December 4, 2014
    Applicant: SEAGATE TECHNOLOGY LLC
    Inventors: Joachim Walter Ahner, David M. Tung
  • Publication number: 20140354982
    Abstract: Provided herein are apparatuses and methods related thereto, wherein at least one apparatus includes: a photon emitting means configured to emit photons, wherein the photons are scattered from magnetic features of an article; a photon detector array configured to receive scattered photons; and a processing means configured to differentiate the magnetic features from the scattered photons.
    Type: Application
    Filed: February 28, 2014
    Publication date: December 4, 2014
    Applicant: SEAGATE TECHNOLOGY LLC
    Inventors: Joachim Walter Ahner, David M. Tung, Stephen Keith McLaurin
  • Publication number: 20140354981
    Abstract: Provided herein is an apparatus, including a mapping means for generating a map of locations of surface features of an article based on photon-detector signals corresponding to photons scattered from the surface features of the article, and a surface feature manager. The surface manager is configured to locate a predetermined surface feature of the surface features of the article based, at least in part, on the map of the surface features locations, irradiate photons of a first power onto the location of the predetermined surface feature to analyze the predetermined surface feature, and irradiate photons of a second power onto the location of the predetermined surface feature to remove the predetermined surface feature.
    Type: Application
    Filed: February 28, 2014
    Publication date: December 4, 2014
    Applicant: SEAGATE TECHNOLOGY LLC
    Inventors: Joachim Walter Ahner, David M. Tung
  • Publication number: 20140354984
    Abstract: Provided herein is an apparatus, including a photon emitting means configured to emit photons onto a surface of an article at a number of azimuthal angles; and a processing means configured to process photon-detector-array signals corresponding to photons scattered from surface features of the article and generate one or more surface features maps for the article from the photon-detector-array signals corresponding to the photons scattered from the surface features of the article.
    Type: Application
    Filed: December 3, 2013
    Publication date: December 4, 2014
    Applicant: Seagate Technology LLC
    Inventors: David M. Tung, Joachim W. Ahner
  • Publication number: 20140354980
    Abstract: Provided herein is an apparatus, including a photon emitting means for emitting photons onto surface edges of an article, a photon detecting means for detecting photons scattered from particles on the surface edges of the article, and a mapping means for mapping a particle or a defect of the surface of the article.
    Type: Application
    Filed: December 3, 2013
    Publication date: December 4, 2014
    Applicant: Seagate Technology LLC
    Inventors: David M. Tung, Joachim W. Ahner
  • Publication number: 20140160481
    Abstract: Provided herein is an apparatus, including a photon emitter configured for emitting photons onto a surface of an article; a first reflective surface and a second reflective surface configured to reflect the photons onto the surface of the article; and a processing means configured for processing signals from a photon detector array corresponding to photons scattered from surface features of the article.
    Type: Application
    Filed: September 17, 2013
    Publication date: June 12, 2014
    Applicant: Seagate Technology LLC
    Inventors: Joachim W. Ahner, David M. Tung, Stephen Keith McLaurin, Travis W. Grodt