NIPPON TELEGRAPH AND TELEPHONE CORPORATION

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Technologies

Intl Class Technology # of Patents/ App Rank in Class
 
 
G02B OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS 285 34
 
 
H04L TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION 139 91
 
 
H04B TRANSMISSION 137 74
 
 
G06F ELECTRIC DIGITAL DATA PROCESSING 118 266
 
 
H04N PICTORIAL COMMUNICATION, e.g. TELEVISION 107 99
 
 
H04J MULTIPLEX COMMUNICATION 99 42
 
 
H01L SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR 90 219
 
 
G06K RECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS 52 113
 
 
G10L SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION 52 41
 
 
H01S DEVICES USING STIMULATED EMISSION 49 47
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Top Patents (by citation)

Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2014/0219,654 OPTICAL NETWORK SYSTEM Oct 12, 12 Aug 07, 14 [H04Q, H04B]
2014/0211,814 COMMUNICATION SYSTEM, TRANSMITTER APPARATUS AND RECEIVER APPARATUS Sep 25, 12 Jul 31, 14 [H04J]
2014/0204,890 WIRELESS COMMUNICATION METHOD AND ACCESS POINT APPARATUS Sep 18, 12 Jul 24, 14 [H04B]
2014/0205,291 OPTICAL SWITCH Sep 14, 12 Jul 24, 14 [H04Q]
2014/0193,114 OPTICAL MODULE Jan 07, 14 Jul 10, 14 [G02B]
2014/0183,677 OPTICAL SEMICONDUCTOR DEVICE Mar 04, 14 Jul 03, 14 [H01L]
2014/0185,504 COMMUNICATION SYSTEM, COMMUNICATION METHOD, AND CHILD STATION OF COMMUNICATION SYSTEM Jun 22, 12 Jul 03, 14 [H04W]
2014/0186,040 LIGHT MERGING/BRANCHING DEVICE, BIDIRECTIONAL LIGHT PROPAGATION DEVICE, AND LIGHT TRANSMISSION/RECEPTION SYSTEM Sep 27, 12 Jul 03, 14 [H04B]
2014/0178,068 SPACE SWITCH DEVICE Aug 02, 12 Jun 26, 14 [H04J, H04Q]
2014/0153,077 OPTICAL MODULATION DEVICE AND BIAS VOLTAGE CONTROL METHOD Aug 21, 12 Jun 05, 14 [G02F]

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
8,800,323 Method of sealing air holes in an optical fiber Mar 05, 08 Aug 12, 14 [C03B]
8,798,024 Control station device, transmitting station device, communication method, and communication system Dec 03, 09 Aug 05, 14 [H04K, H04J, H04B]
8,792,359 Communication system, transmitting device, receiving device, transmission method, and communication method Dec 16, 09 Jul 29, 14 [H04J]
8,793,124 Speech processing method and apparatus for deciding emphasized portions of speech, and program therefor Apr 05, 06 Jul 29, 14 [G10L]
8,787,203 Virtual network control method and system based on fluctuations Jan 27, 11 Jul 22, 14 [H04L]
8,787,710 Wideband interferometer type polarization light beam combiner and splitter Jun 02, 10 Jul 22, 14 [G02B]
8,787,769 Chromatic dispersion value calculating apparatus, optical signal receiving apparatus, optical signal transmitting apparatus, and chromatic dispersion value calculation method Jul 14, 10 Jul 22, 14 [H04B]
8,781,029 Frequency offset estimation apparatus, reception apparatus, frequency offset estimation method, and reception method Jun 17, 11 Jul 15, 14 [H04L, H03K]
8,773,749 Variable focusing lens and microscope Jun 11, 10 Jul 08, 14 [G02F]
8,774,089 Wireless terminal call method and wireless access system capable of greatly reducing standby power consumption of wireless terminals in a call standby state without increasing call delay time Mar 24, 09 Jul 08, 14 [H04W]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Filing Date Issue/Pub Date Intl Class
2013/0058,584 IMAGE ENCODING AND DECODING FOR MULTI-VIEWPOINT IMAGES Sep 12, 12 Mar 07, 13 [G06K]
2012/0172,735 BLOOD PRESSURE MEASURING APPARATUS AND BLOOD PRESSURE MEASURING METHOD Mar 16, 12 Jul 05, 12 [A61B]
2012/0123,788 CODING METHOD, DECODING METHOD, AND DEVICE AND PROGRAM USING THE METHODS Jun 22, 10 May 17, 12 [H04B, G10L]
2011/0304,897 Optical Semiconductor Module and Method for Assembling the Same Oct 09, 09 Dec 15, 11 [G02B, G02F, H01L]
2011/0273,443 SYSTEM AND A METHOD FOR THREE-DIMENSIONAL MODELING OF A THREE-DIMENSIONAL SCENE FEATURES Aug 12, 09 Nov 10, 11 [G06T]
8,009,994 Optical node device, network control device, maintenance-staff device, optical network, and 3R relay implementation node decision method Apr 02, 09 Aug 30, 11 [H04B]
2011/0170,832 OPTICAL TRANSCEIVER MODULE AND METHOD OF MANUFACTURING THE OPTICAL TRANSCEIVER MODULE Jan 04, 11 Jul 14, 11 [B23P, G02B]
2011/0141,458 Coated Optical Fiber Identifying Apparatus and Coated Optical Fiber Identifying Method Jun 30, 09 Jun 16, 11 [G01N]
2011/0116,745 OPTICAL CONNECTOR, AND ASSEMBLING METHOD OF OPTICAL CONNECTOR Jan 24, 11 May 19, 11 [G02B]
2011/0108,579 PUMP RETENTION COLLAR AND METHODS FOR USING THE SAME May 19, 09 May 12, 11 [G01F, B65D]
2011/0026,585 VIDEO QUALITY OBJECTIVE ASSESSMENT METHOD, VIDEO QUALITY OBJECTIVE ASSESSMENT APPARATUS, AND PROGRAM Mar 23, 09 Feb 03, 11 [H04N]
2011/0013,694 VIDEO QUALITY OBJECTIVE ASSESSMENT METHOD, VIDEO QUALITY OBJECTIVE ASSESSMENT APPARATUS, AND PROGRAM Mar 23, 09 Jan 20, 11 [H04N, G06K]
2010/0285,612 FLOW RATE MEASUREMENT APPARATUS, ANTIGEN CONCENTRATION MEASUREMENT APPARATUS, FLOW CELL, FLOW RATE MEASUREMENT METHOD, AND ANTIGEN CONCENTRATION MEASURING METHOD Jan 15, 09 Nov 11, 10 [G01N]
2010/0245,051 Communication Method for Noncontact RF ID System, Noncontact RF ID System, and Transmitter and Receiver Jun 11, 10 Sep 30, 10 [H04Q]
2010/0247,039 OPTICAL CONNECTOR AND METHOD OF ASSEMBLING THE SAME May 09, 08 Sep 30, 10 [G02B, H05K]
2010/0233,033 FLOW CELL AND METHOD FOR MANUFACTURING THE SAME Jun 26, 07 Sep 16, 10 [B44C, B01L, B81B, B32B, B05D, G01N]
2010/0217,990 COMMUNICATION METHOD, RELAY SERVER DEVICE, PROGRAM, AND RECORDING MEDIUM May 28, 08 Aug 26, 10 [H04L, G06F]
2010/0187,276 OPTICAL FIBER CUTTING DEVICE, OPTICAL FIBER CUTTING METHOD, AND OPTICAL FIBER CUTTING BLADE MEMBER Oct 24, 08 Jul 29, 10 [G02B, B26F, C03B]
7,749,626 Fuel cell power generating system with two fuel cells of different types and method of controlling the same Nov 12, 03 Jul 06, 10 [H01M]
2010/0169,425 Electronic Mail Delivery System And Electronic Mail Delivery Program Mar 29, 07 Jul 01, 10 [G06F]

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