Patents Assigned to AT&T Corp.
  • METHOD FOR PRODUCING SODIUM TUNGSTATE, METHOD FOR COLLECTING TUNGSTEN, APPARATUS FOR PRODUCING SODIUM TUNGSTATE, AND METHOD FOR PRODUCING SODIUM TUNGSTATE AQUEOUS SOLUTION
    Publication number: 20140119998
    Abstract: Provided are a method for producing sodium tungstate by supplying an oxidant made of sodium nitrate or sodium nitrite to bring a tungsten containing material and the oxidant into contact with each other in an atmosphere containing oxygen to thereby continuously produce a reaction product; a method for collecting tungsten using the method; and an apparatus for producing sodium tungstate. Also provided are a method for producing a sodium tungstate aqueous solution in which a reductant is introduced into a melt containing the above-described reaction product which is then dissolved in water; and a method for collecting tungsten using the method.
    Type: Application
    Filed: December 23, 2013
    Publication date: May 1, 2014
    Applicants: A.L.M.T. Corp., Sumitomo Electric Industries, Ltd., Sumitomo Electric Hardmetal Corp.
    Inventors: Yoshiharu Yamamoto, Kazuo Sasaya, Takayuki Fudo, Akira Nakano, Syunsuke Yamanaka, Takahisa Iguchi, Fumiatsu Sato, Akihiko Ikegaya
  • METHOD FOR PRODUCING SODIUM TUNGSTATE, METHOD FOR COLLECTING TUNGSTEN, APPARATUS FOR PRODUCING SODIUM TUNGSTATE, AND METHOD FOR PRODUCING SODIUM TUNGSTATE AQUEOUS SOLUTION
    Publication number: 20140112847
    Abstract: Provided are a method for producing sodium tungstate by supplying an oxidant made of sodium nitrate or sodium nitrite to bring a tungsten containing material and the oxidant into contact with each other in an atmosphere containing oxygen to thereby continuously produce a reaction product; a method for collecting tungsten using the method; and an apparatus for producing sodium tungstate. Also provided are a method for producing a sodium tungstate aqueous solution in which a reductant is introduced into a melt containing the above-described reaction product which is then dissolved in water; and a method for collecting tungsten using the method.
    Type: Application
    Filed: December 23, 2013
    Publication date: April 24, 2014
    Applicants: A.L.M.T. Corp., Sumitomo Electric Industries, Ltd., Sumitomo Electric Hardmetal Corp.
    Inventors: Yoshiharu Yamamoto, Kazuo Sasaya, Takayuki Fudo, Akira Nakano, Syunsuke Yamanaka, Takahisa Iguchi, Fumiatsu Sato, Akihiko Ikegaya
  • Electrodeposited wire tool and manufacturing method thereof
    Patent number: 8677986
    Abstract: An electrodeposited wire tool has a core wire extending in a longitudinal direction, a plating layer provided on an outer peripheral surface of the core wire, superabrasive grains held by the plating layer and coating layers covering the outer peripheral surfaces of the superabrasive grains. The coating layers are constituted of electroless Ni—P platings. The coating layers are heat-treated, and the electroless Ni—P platings are partially or entirely crystallized.
    Type: Grant
    Filed: April 8, 2009
    Date of Patent: March 25, 2014
    Assignee: A.L.M.T. Corp.
    Inventors: Katsuo Kazahaya, Yasushi Matsumoto, Toshio Fukunishi, Munehiro Tsujimoto, Hideki Ogawa, Masaaki Yamanaka, Kenji Fukushima
  • Method for producing sodium tungstate, method for collecting tungsten, apparatus for producing sodium tungstate, and method for producing sodium tungstate aqueous solution
    Patent number: 8632747
    Abstract: Provided are a method for producing sodium tungstate by supplying an oxidant made of sodium nitrate or sodium nitrite to bring a tungsten containing material and the oxidant into contact with each other in an atmosphere containing oxygen to thereby continuously produce a reaction product; a method for collecting tungsten using the method; and an apparatus for producing sodium tungstate. Also provided are a method for producing a sodium tungstate aqueous solution in which a reductant is introduced into a melt containing the above-described reaction product which is then dissolved in water; and a method for collecting tungsten using the method.
    Type: Grant
    Filed: March 5, 2010
    Date of Patent: January 21, 2014
    Assignees: A.L.M.T. Corp., Sumitomo Electric Hardmetal Corp., Sumitomo Electric Industries, Ltd.
    Inventors: Yoshiharu Yamamoto, Kazuo Sasaya, Takayuki Fudo, Akira Nakano, Syunsuke Yamanaka, Takahisa Iguchi, Fumiatsu Sato, Akihiko Ikegaya
  • MOLYBDENUM MATERIAL
    Publication number: 20140014235
    Abstract: Provided is an industrially advantageous molybdenum material which is capable of causing secondary recrystallization to occur at a temperature lower than conventional and which, after the secondary recrystallization, can have a structure that comprises giant crystal grains with less grain boundaries and thus is excellent in creep resistance. The molybdenum material has, in at least a part thereof, a portion having a region where the peak intensities of the (110) and (220) diffraction planes are each less than the peak intensity of the (211) diffraction plane, as measured by X-ray diffraction, in a region at a depth of one-fifth of the entire thickness in a plate thickness direction from a surface.
    Type: Application
    Filed: January 11, 2012
    Publication date: January 16, 2014
    Applicant: A.L.M.T. CORP.
    Inventors: Takanori Kadokura, Tomohiro Takida
  • Arrangement for Synchronizing Access Points in WLAN Using Direct-Sequence Spread Spectrum Signaling
    Publication number: 20140016674
    Abstract: An arrangement for providing synchronization between a number of overlapping area access points within a wireless LAN utilizes an Ethernet cable connection to transmit synchronization signals from a centralized hub/switch to each of the access points connected to the cable. The synchronization signal takes the form of a direct sequence spread spectrum (DS-SS) signal. At each access point, a filter is used to recover the synchronization signal, allowing for the group of access points to share a common beacon signal and allowing frequency re-use among the access points.
    Type: Application
    Filed: September 19, 2013
    Publication date: January 16, 2014
    Applicant: AT&T Intellectual Property II, L.P. (formerly known as AT&T Corp.)
    Inventors: Saeed S. Ghassemzadeh, Robert Raymond Miller, John F. Murray
  • Method and apparatus for providing information associated with embedded hyperlinked images
    Patent number: 8625754
    Abstract: A method and apparatus for allowing a network provider to embed hyperlinks within streaming video contents that will enable users to click on an embedded hyperlinked image to obtain more information related to the streaming video contents are disclosed. For example, someone watching a tennis match can click on the hyperlinked image corresponding to one of the players and receive a frame of data about his or her recent performance, or someone watching the news can click on a hyperlinked image of a segment of a world map and receive a frame of data about current events occurring in a particular region.
    Type: Grant
    Filed: October 24, 2005
    Date of Patent: January 7, 2014
    Assignee: AT&T Intellectual Property II, L.P. via a transfer from AT&T Corp.
    Inventors: Marian Croak, Hossein Eslambolchi
  • COMPOSITE MEMBER INCLUDING SUBSTRATE MADE OF COMPOSITE MATERIAL
    Publication number: 20130328184
    Abstract: A composite member has a substrate made of a composite material having SiC combined with magnesium or a magnesium alloy, and has a warpage degree of not less than 0.01×10?3 and not more than 10×10?3, the warpage degree being defined as lmax/Dmax, where lmax being a difference between a maximum value and a minimum value of surface displacement of one surface of composite member measured along a longest side thereof, and Dmax being a length of the longest side. Thereby, a composite member capable of efficiently dissipating heat to an installation object, a heat-dissipating member using the composite member, and a semiconductor device having the heat-dissipating member are provided.
    Type: Application
    Filed: February 20, 2012
    Publication date: December 12, 2013
    Applicants: A.L.M.T. CORP., SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Isao Iwayama, Taichiro Nishikawa, Toshiya Ikeda, Shigeki Koyama
  • Semiconductor element mounting member, method of producing the same, and semiconductor device
    Patent number: 8575625
    Abstract: A semiconductor element mounting member is arranged to infiltrate a matrix metal into a porous body that is formed by sintering diamond particles being in direct contact with each other and that has an infiltration auxiliary layer selectively formed only on the exposed surface of each diamond particle. A production method includes a step at which a mixture of diamond particles, a powder of a chemical element out of which the infiltration auxiliary layer is made, and an ammonium chloride powder is compressed and molded, is then heated to 900° C. or more, and is formed into the porous body. A semiconductor device has a semiconductor element mounted on an element mounting surface of the semiconductor element mounting member with a connecting layer therebetween.
    Type: Grant
    Filed: August 1, 2012
    Date of Patent: November 5, 2013
    Assignee: A.L.M.T. Corp.
    Inventors: Kouichi Takashima, Yoshifumi Aoi, Eiji Kamijo
  • METHOD AND APPARATUS FOR DATA TRANSMISSION USING MULTIPLE TRANSMIT ANTENNAS
    Publication number: 20130243126
    Abstract: A method and apparatus for increasing the data rate and providing antenna diversity using multiple transmit antennas is disclosed. A set of bits of a digital signal are used to generate a codeword. Codewords are provided according to a channel code. Delay elements may be provided in antenna output channels, or with suitable code construction delay may be omitted. n signals represent n symbols of a codeword are transmitted with n different transmit antennas. At the receiver MSLE or other decoding is used to decode the noisy received sequence. The parallel transmission and channel coding enables an increase the data rate over previous techniques, and recovery even under fading conditions. The channel coding may be concatenated with error correction codes under appropriate conditions.
    Type: Application
    Filed: February 25, 2013
    Publication date: September 19, 2013
    Applicant: AT&T Corp.
    Inventors: Arthur Robert Calderbank, Ayman F. Naguib, Nambirajan Seshadri, Vahid Tarokh
  • Automatic Mute Detection
    Publication number: 20130235994
    Abstract: A system and methodology for managing a mute function muting a connection to a conference call is disclosed. The system is implemented when the mute function is activated on a line connected to a conference call through a telecommunications network. The method includes receiving a sound, determining whether the sound meets predetermined criteria and if the sound meets predetermined criteria then performing a mute status operation.
    Type: Application
    Filed: April 23, 2013
    Publication date: September 12, 2013
    Applicant: AT&T Intellectual Property II, L.P., via transfer from AT&T Corp.
    Inventor: AT&T Intellectual Property II, L.P., via transfer from AT&T Corp.
  • INTEGRATION OF HOME ENTERTAINMENT DEVICES WITH A SOFTWARE CLIENT FOR TELEPHONY
    Publication number: 20130222527
    Abstract: A communication system including a communication network, an entertainment device connected to the communication network, and an application server connected to the communication network. The entertainment device has a software client adapted to provide real time two-way communication between the entertainment device and a telephony device connected to the communication network. The application server is adapted to communicate with the software client and facilitate the real time two-way communication between the entertainment device and the telephony device.
    Type: Application
    Filed: April 8, 2013
    Publication date: August 29, 2013
    Applicant: AT&T CORP.
    Inventor: AT&T CORP.
  • METHOD AND APPARATUS FOR STAGGERING INTERNET PROTOCOL TELECONFERENCING CALLS
    Publication number: 20130223291
    Abstract: A method and apparatus for enabling providers of PSTN toll free services to stagger simultaneous transmission of call setup signaling messages into an IP based teleconference bridge, supported by a VoIP network, by suspending a subset of calls and placing them on hold while placing other calls to be connected to the conference bridge are disclosed. The PSTN network can stagger calls by limiting the number of call setup signaling messages to be sent to the VoIP network within a predefined period of time interval and spread all the calls over multiple of such predefined periods. Prerecorded announcements or music can be played while the calls that have been placed on hold are in queue.
    Type: Application
    Filed: April 1, 2013
    Publication date: August 29, 2013
    Applicant: AT&T Corp.
    Inventor: AT&T Corp.
  • METHOD OF PROVIDING VOICE OVER IP AT PREDEFINED QOS LEVELS
    Publication number: 20130208614
    Abstract: The present invention is a technique for provisioning and assessment of voice quality in Internet Protocol (IP) voice applications. A predetermined quality of service (QoS) is received from a user in the form of an acceptable packet loss. The technique measures current packet loss and delay in the network and in the terminal, and determines and optimum play-out delay for the use by a play-out adaptation routine. An actual QoS is reported back to the user. To enhance packet delay and loss measurement, a QoS engine component is placed on the terminal side of the packetizer, therefore including packetizer losses in any measurement of the network.
    Type: Application
    Filed: March 18, 2013
    Publication date: August 15, 2013
    Applicant: AT&T Corp.
    Inventor: AT&T Corp.
  • METHOD AND APPARATUS FOR INTERNET PROTOCOL TELEVISION MEDIA CONTENT SHARING
    Publication number: 20130191871
    Abstract: A method and apparatus for enabling IP service subscribers to share media contents with other IP service subscribers or Internet users in either a secured or open fashion are disclosed. In one embodiment, the present invention enables the sharing of home movies, pictures, and other media contents, where media could be stored media or media created in real-time. Namely, the present method allows IP service subscribers to effectively create their own TV station, e.g., complete with stored or live content programming and content scheduling. In turn, the method allows a viewing subscriber to select and view a shared media program created by another subscriber.
    Type: Application
    Filed: March 12, 2013
    Publication date: July 25, 2013
    Applicant: AT&T Corp.
    Inventor: AT&T Corp.
  • METHOD AND APPARATUS FOR PROVIDING AN AUDIBLE CALLING PARTY IDENTIFICATION FOR A CALL WAITING SERVICE
    Publication number: 20130155910
    Abstract: The present invention enables users of packet-switched network services, e.g., VoIP network services, to hear a very gentle whispering tone that quietly conveys the identity of the calling party when they are engaged in conversation and to receive a call-waiting signal. The tone is audible only to the called party but does not mute the ongoing conversation path. This enables subscribed users to hear their ongoing conversation while receiving the whispering tone.
    Type: Application
    Filed: February 18, 2013
    Publication date: June 20, 2013
    Applicant: AT&T Corp.
    Inventor: AT&T Corp.
  • Multiple Media Fail-Over To Alternate Media
    Publication number: 20130128745
    Abstract: The present invention is a system and method for failing over from a current network access medium to an alternative network access medium. A customer premises equipment (CPE) box has ports for connections to a network through several network access media, such as high speed cable connections, DSL connections and dial-up connections. QoS parameters for each of the connections are monitored from a bandwidth manager remote from the CPE box. When it is determined that a fail-over would be beneficial, a message is sent from the bandwidth manager to the CPE box containing a command to fail-over and an identity of the alternate network access media.
    Type: Application
    Filed: January 21, 2013
    Publication date: May 23, 2013
    Applicant: AT&T Intellectual Property II, L.P., vis transfer from AT&T Corp.
    Inventor: AT&T Intellectual Property II, L.P., via transfer from AT&T Corp.
  • System And Method For Monitoring Network Traffic
    Publication number: 20130133074
    Abstract: Described is a method of assigning a network address to a trap, the network address being a dark address of a virtual private network. The network traffic destined for the network address is monitored and a classification of the network traffic is determined. After the classification, a predetermined response is executed based on the classification of the traffic.
    Type: Application
    Filed: January 14, 2013
    Publication date: May 23, 2013
    Applicant: AT&T Intellectual Property II, L.P., via transfer from AT&T Corp.
    Inventor: AT&T Intellectual Property II, L.P., via transfer from AT&T Corp.
  • NETWORK SECURITY DEVICE AND METHOD
    Publication number: 20130125207
    Abstract: The invention describes a method for hardening a security mechanism against physical intrusion and substitution attacks. A user establishes a connection between a network peripheral device and a network via a security mechanism. The security mechanism includes read only memory (ROM) that contains code that initiates operation of the mechanism and performs authentication functions. A persistent memory contains configuration information. A volatile memory stores user and device identification information that remains valid only for a given session and is erased thereafter to prevent a future security breach. A tamper-evident enclosure surrounds the memory elements, which if breached, becomes readily apparent to the user.
    Type: Application
    Filed: December 11, 2012
    Publication date: May 16, 2013
    Applicant: AT&T Corp.
    Inventor: AT&T Corp.
  • INTERFERENCE SUPPRESSING OFDM SYSTEM FOR WIRELESS COMMUNICATIONS
    Publication number: 20130107911
    Abstract: An IS-OFDM system for point-to-point wireless communications that suppresses narrow-band interference comprises an IS-OFDM transmitter and an IS-OFDM receiver, wherein a transmitted signal comprises a plurality of subcarriers, and further wherein each subcarrier contains more than one and potentially all symbols transmitted in a given frame. The IS-OFDM transmitted signal is at a data rate that is equal to the data rate of the input data stream via the use of P/S converters.
    Type: Application
    Filed: December 11, 2012
    Publication date: May 2, 2013
    Applicant: AT&T Corp.
    Inventor: AT&T Corp.