Patents by Inventor Lu Zhang

Lu Zhang 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: 6888993
    Abstract: A DCF for compensating for the accumulated dispersion of a length of SMF in the C+L band window that includes a core surrounded by a cladding layer of refractive index ?c. The core includes at least three radially adjacent segments; a central core segment having a positive ?1, a moat segment having a negative refractive index ?2, and a ring segment having a positive refractive index ?3, wherein ?1>?3>?c>?2. The DCF exhibits a negative dispersion slope of between ?0.29 and ?0.43 ps/nm2/km at 1575 nm, and a total dispersion less than ?96 and greater than ?108 ps/nm/km at 1575 nm. A transmission link including the combination of a SMF and the present invention DCF is also disclosed.
    Type: Grant
    Filed: November 27, 2002
    Date of Patent: May 3, 2005
    Assignee: Corning Incorporated
    Inventor: Lu Zhang
  • Patent number: 6858350
    Abstract: A pack-bonded, multiphase composite material is provided. The multiphase composite material has at least two layers of a matrix material pack-bonded with at least one layer of a reinforcement material. The reinforcement material is oriented in a pack-bonded direction such that the reinforcement material is uniformly dispersed between the matrix materials. Additionally, the matrix materials and the reinforcement material are chemically dissimilar. The matrix material is selected from the group consisting of lead and lead alloys, and the reinforcement material is a plurality of non-conductive, large length-to-diameter ratio, low-density fibers.
    Type: Grant
    Filed: June 11, 2001
    Date of Patent: February 22, 2005
    Assignee: Delphi Technologies, Inc.
    Inventors: John Hrinevich, Jr., Wellington Y. Kwok, Lu Zhang
  • Publication number: 20050027534
    Abstract: A system and method for inputting Chinese characters using phonetic-based or stroke-based input method in a reduced keyboard is disclosed. By introducing common indices to ideographic characters, the system allows the ideographic characters to be shared among different type of input methods such as phonetic-based input method and stroke-based input method. The system matches input sequences to input method specific indices such as phonetic or stroke indices. These input method specific indices are then converted into indices to ideographic characters, which is then used to retrieve ideographic characters.
    Type: Application
    Filed: March 17, 2004
    Publication date: February 3, 2005
    Inventors: Pim van Meurs, Lu Zhang
  • Publication number: 20050027524
    Abstract: A system and method for inputting Chinese characters using Pinyin without requiring the entry of a delimiter key between Pinyin entries in a reduced keyboard is disclosed. The system searches for all possible single or multiple Pinyin spellings based on the entered Latin alphabets. Once the user has completed the inputting of the Pinyin spellings for desired Chinese phrase or characters, all possible matching phrases or characters are displayed on screen and off-screen due to screen size. The user then scrolls through a list of matching phrases or characters and selects the desired one by clicking.
    Type: Application
    Filed: July 30, 2003
    Publication date: February 3, 2005
    Inventors: Jianchao Wu, Jenny Lai, Lian He, Pim Meurs, Keng Wong, Lu Zhang
  • Publication number: 20040234220
    Abstract: A DCF adapted to compensate for dispersion and slope of a length of SMF in the C-band window that includes a core surrounded by a cladding layer of refractive index &Dgr;c. The core includes at least three radially adjacent segments, a central core segment having a positive &Dgr;1, a moat segment having a negative refractive index &Dgr;2, and a ring segment having a positive refractive index &Dgr;3, wherein &Dgr;1>&Dgr;3>&Dgr;c>&Dgr;2. The DCF exhibits a negative Dispersion Slope (DS), where −0.29 (ps/nm2·km) at 1546 nm, a dispersion (D), where −100<D<−120 (ps.nm·km) at 1546 nm, and a &kgr; value (D/DS) at 1546 nm that is preferably between 250 and 387 nm. The DCF preferably has a cutoff wavelength (&lgr;c) less than 1500 nm, attenuation at 1550 nm of less than 0.6 dB/km, and a bend loss of less than 0.01 dB/m on a 40 mm mandrel at 1550 nm.
    Type: Application
    Filed: June 22, 2004
    Publication date: November 25, 2004
    Inventor: Lu Zhang
  • Patent number: 6807351
    Abstract: The present invention relates to a dispersion compensating optical fiber (“DC fiber”) having a segmented core of at least three segments and having a negative total dispersion and negative dispersion slope in the L-band. The index profile of the segmented core is selected to provide an optical fiber having properties suitable for a high performance communication system operating in the L-band wavelength band, i.e., between about 1570 nm to 1620 nm. The DC fiber according to the invention exhibits total dispersion at 1595 nm of between −70 and −225 ps/km/nm and dispersion slope more negative than −0.7 ps/km/nm2. The DC fiber may be optically connected to a non-zero dispersion shifted fiber in the system to compensate for dispersion and dispersion slope thereof.
    Type: Grant
    Filed: September 9, 2002
    Date of Patent: October 19, 2004
    Assignee: Corning Incorporated
    Inventors: Peter G. Hebgen, Gang Qi, Lu Zhang
  • Patent number: 6768852
    Abstract: A DCF adapted to compensate for dispersion and slope of a length of SMF in the C-band window that includes a core surrounded by a cladding layer of refractive index &Dgr;c. The core includes at least three radially adjacent segments, a central core segment having a positive &Dgr;1, a moat segment having a negative refractive index &Dgr;2, and a ring segment having a positive refractive index &Dgr;3, wherein &Dgr;1>&Dgr;3 >&Dgr;c>&Dgr;2. The DCF exhibits a negative Dispersion Slope (DS), where −0.29 (ps/nm2·km) at 1546 nm, a dispersion (D), where −100<D<−120 (ps.nm·km) at 1546 nm, and a &kgr; value (D/DS) at 1546 nm that is preferably between 250 and 387 nm. The DCF preferably has a cutoff wavelength (&lgr;c) less than 1500 nm, attenuation at 1550 nm of less than 0.6 dB/km, and a bend loss of less than 0.01 dB/m on a 40 mm mandrel at 1550 nm.
    Type: Grant
    Filed: June 28, 2002
    Date of Patent: July 27, 2004
    Assignee: Corning Incorporated
    Inventor: Lu Zhang
  • Patent number: 6749950
    Abstract: Provided for herein is a method of making an expanded metal grid, comprising: compression rolling a metal strip at a reduction ratio from about 1.25 to 1, to about 25 to 1 to produce a rolled strip, heating the rolled strip at a temperature of at least about 125° C., and at most about 325° C. for at least about 30 seconds, to produce a heat treated metal strip having an equiaxial grain structure within; and expanding the heat treated metal strip to produce the expanded metal grid.
    Type: Grant
    Filed: March 28, 2002
    Date of Patent: June 15, 2004
    Assignee: Delphi Technologies, Inc.
    Inventor: Lu Zhang
  • Publication number: 20040101263
    Abstract: A DCF for compensating for the accumulated dispersion of a length of SMF in the C+L band window that includes a core surrounded by a cladding layer of refractive index &Dgr;c. The core includes at least three radially adjacent segments; a central core segment having a positive &Dgr;1, a moat segment having a negative refractive index &Dgr;2, and a ring segment having a positive refractive index &Dgr;3, wherein &Dgr;1>&Dgr;3>&Dgr;c>&Dgr;2. The DCF exhibits a negative dispersion slope of between −0.29 and −0.43 ps/nm2/km at 1575 nm, and a total dispersion less than −96 and greater than −108 ps/nm/km at 1575 nm. A transmission link including the combination of a SMF and the present invention DCF is also disclosed.
    Type: Application
    Filed: November 27, 2002
    Publication date: May 27, 2004
    Inventor: Lu Zhang
  • Patent number: 6699620
    Abstract: A lead alloy coating for a positive grid of a lead acid battery is provided. The lead alloy coating includes a tin content of at least about 0.1%, but not more than about 3%; and a residual lead content. The lead alloy coating optionally includes a calcium content of at least about 0.01%, but not more than about 0.1%, with or without a silver content of at least about 0.01%, but not more than about 0.1%. Alternatively, the lead alloy coating optionally includes a barium content of at least about 0.01%, but not more than about 0.1%, with or without a silver content of at least about 0.01%, but not more than about 0.1%.
    Type: Grant
    Filed: July 19, 2001
    Date of Patent: March 2, 2004
    Assignee: Delphi Technologies, Inc.
    Inventors: Lu Zhang, John Lewis Ayres
  • Publication number: 20030183312
    Abstract: Provided for herein is a method of making an expanded metal grid, comprising: compression rolling a metal strip at a reduction ratio from about 1.25 to 1, to about 25 to 1 to produce a rolled strip, heating the rolled strip at a temperature of at least about 125° C., and at most about 325° C. for at least about 30 seconds, to produce a heat treated metal strip having an equiaxial grain structure within; and expanding the heat treated metal strip to produce the expanded metal grid.
    Type: Application
    Filed: March 28, 2002
    Publication date: October 2, 2003
    Inventor: Lu Zhang
  • Publication number: 20030063881
    Abstract: The present invention relates to a dispersion compensating optical fiber (“DC fiber”) having a segmented core of at least three segments and having a negative total dispersion and negative dispersion slope in the L-band. The index profile of the segmented core is selected to provide an optical fiber having properties suitable for a high performance communication system operating in the L-band wavelength band, i.e., between about 1570 nm to 1620 nm. The DC fiber according to the invention exhibits total dispersion at 1595 nm of between −70 and −225 ps/km/nm and dispersion slope more negative than −0.7 ps/km/nm2. The DC fiber may be optically connected to a non-zero dispersion shifted fiber in the system to compensate for dispersion and dispersion slope thereof.
    Type: Application
    Filed: September 9, 2002
    Publication date: April 3, 2003
    Inventors: Peter G. Hebgen, Gang Qi, Lu Zhang
  • Publication number: 20030059186
    Abstract: The present invention relates to a dispersion compensating optical fiber (“DC fiber”) having a segmented core of at least three segments and having a negative total dispersion and negative dispersion slope in the L-band. The index profile of the segmented core is selected to provide an optical fiber having properties suitable for a high performance communication system operating in the L-band wavelength band, i.e., between about 1570 nm to 1620 nm. The DC fiber according to the invention exhibits total dispersion at 1595 nm of between −95 and −225 ps/km/nm and dispersion slope more negative than −1.0 ps/km/nm2. The DC fiber may be optically connected to a non-zero dispersion shifted fiber in the system to compensate for dispersion and dispersion slope thereof.
    Type: Application
    Filed: September 26, 2001
    Publication date: March 27, 2003
    Inventors: Peter G. Hebgen, Gang Qi, Lu Zhang
  • Publication number: 20030053780
    Abstract: A DCF adapted to compensate for dispersion and slope of a length of SMF in the C-band window that includes a core surrounded by a cladding layer of refractive index &Dgr;c. The core includes at least three radially adjacent segments, a central core segment having a positive &Dgr;1, a moat segment having a negative refractive index &Dgr;2, and a ring segment having a positive refractive index &Dgr;3, wherein &Dgr;1>&Dgr;3 >&Dgr;c>&Dgr;2. The DCF exhibits a negative Dispersion Slope (DS), where −0.29 (ps/nm2·km) at 1546 nm, a dispersion (D), where −100<D<−120 (ps.nm·km) at 1546 nm, and a &kgr; value (D/DS) at 1546 nm that is preferably between 250 and 387 nm. The DCF preferably has a cutoff wavelength (&lgr;c) less than 1500 nm, attenuation at 1550 nm of less than 0.6 dB/km, and a bend loss of less than 0.01 dB/m on a 40 mm mandrel at 1550 nm.
    Type: Application
    Filed: June 28, 2002
    Publication date: March 20, 2003
    Inventor: Lu Zhang
  • Publication number: 20030017399
    Abstract: A lead alloy coating for a positive grid of a lead acid battery is provided. The lead alloy coating includes a tin content of at least about 0.1%, but not more than about 3%; and a residual lead content. The lead alloy coating optionally includes a calcium content of at least about 0.01%, but not more than about 0.1%, with or without a silver content of at least about 0.01%, but not more than about 0.1%. Alternatively, the lead alloy coating optionally includes a barium content of at least about 0.01%, but not more than about 0.1%, with or without a silver content of at least about 0.01%, but not more than about 0.1%.
    Type: Application
    Filed: July 19, 2001
    Publication date: January 23, 2003
    Inventors: Lu Zhang, John Lewis Ayres
  • Publication number: 20030017398
    Abstract: A coated positive grid for a lead acid battery is provided. The coated positive grid includes a strip lead or lead alloy and a coating of lead or lead alloy. The strip has first and second surfaces, and a linear elongated grain structure oriented parallel to the first and second surfaces. The coating is disposed on the first surface. The coating has a random grain structure. The random grain structure and the linear elongated grain structure conduct electrical current between the coated positive grid and an active material of the lead acid battery.
    Type: Application
    Filed: July 19, 2001
    Publication date: January 23, 2003
    Inventors: Lu Zhang, John Lewis Ayres
  • Publication number: 20020187397
    Abstract: A pack-bonded, multiphase composite material is provided. The multiphase composite material has at least two layers of a matrix material pack-bonded with at least one layer of a reinforcement material. The reinforcement material is oriented in a pack-bonded direction such that the reinforcement material is uniformly dispersed between the matrix materials. Additionally, the matrix materials and the reinforcement material are chemically dissimilar. The matrix material is selected from the group consisting of lead and lead alloys, and the reinforcement material is a plurality of non-conductive, large length-to-diameter ratio, low-density fibers.
    Type: Application
    Filed: June 11, 2001
    Publication date: December 12, 2002
    Inventors: John Hrinevich, Wellington Y. Kwok, Lu Zhang