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 146 96
 
 
H04B TRANSMISSION 141 73
 
 
G06F ELECTRIC DIGITAL DATA PROCESSING 121 267
 
 
H04N PICTORIAL COMMUNICATION, e.g. TELEVISION 115 101
 
 
H04J MULTIPLEX COMMUNICATION 105 44
 
 
H01L SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR 90 224
 
 
G10L SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION 55 40
 
 
G06K RECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS 52 120
 
 
H01S DEVICES USING STIMULATED EMISSION 49 49
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Top Patents (by citation)

Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2015/0010,061 VIDEO ENCODING METHOD, DEVICE AND PROGRAM Jan 22, 13 Jan 08, 15 [H04N]
2015/0010,147 CRYPTOGRAPHIC SYSTEM, CRYPTOGRAPHIC METHOD, AND CRYPTOGRAPHIC PROGRAM Mar 01, 13 Jan 08, 15 [H04L]
2015/0003,822 SELF-DIAGNOSTIC METHOD FOR PON PROTECTION SYSTEM, AND PON PROTECTION SYSTEM Nov 15, 12 Jan 01, 15 [H04Q, H04B]
2014/0375,473 SENSOR TERMINAL AND SENSOR NETWORK SYSTEM Feb 08, 13 Dec 25, 14 [G01D]
2014/0376,355 WIRELESS APPARATUS AND TRAINING SIGNAL TRANSMISSION METHOD Jan 23, 13 Dec 25, 14 [H04J, H04L, H04W]
2014/0376,535 WIRELESS SIGNAL TRANSMITTING METHOD AND WIRELESS APPARATUS Feb 04, 13 Dec 25, 14 [H04W, H04B]
2014/0376,553 FRAME SEARCH PROCESSING APPARATUS AND METHOD Feb 12, 13 Dec 25, 14 [H04L]
2014/0376,861 ARRAYED WAVEGUIDE GRATING, OPTICAL MODULE PROVIDED WITH SAID ARRAYED WAVEGUIDE GRATING, AND OPTICAL COMMUNICATIONS SYSTEM Dec 28, 12 Dec 25, 14 [G02B]
2014/0369,494 SIGNATURE VERIFICATION SYSTEM, SIGNATURE DEVICE, VERIFICATION DEVICE, AND SIGNATURE VERIFICATION METHOD Jan 18, 13 Dec 18, 14 [H04L]
2014/0369,644 LIGHT-RECEIVING PACKAGE FOR FLAT-PLATE MOUNTING, AND OPTICAL MODULE Dec 04, 12 Dec 18, 14 [G02B, H01L]

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
8,938,068 Functional encryption applied system, information output apparatus, information processing apparatus, encryption protocol execution method, information output method, information processing method, program and recording medium Jul 30, 10 Jan 20, 15 [H04L]
8,938,623 Cryptographic processing system, key generation device, encryption device, decryption device, cryptographic processing method, and cryptographic processing program Dec 06, 11 Jan 20, 15 [H04L, G06F]
8,934,782 Transmission method, reception method, transmitter apparatus, and receiver device Feb 03, 11 Jan 13, 15 [H04J, G02F, H04B]
8,928,868 Optical fiber line characteristic analysis apparatus and analysis method thereof May 31, 12 Jan 06, 15 [G01N, G01M]
8,929,542 Cryptographic processing system, key generation device, key delegation device, encryption device, decryption device, cryptographic processing method, and cryptographic processing program Dec 20, 10 Jan 06, 15 [H04L]
8,929,737 Optical line terminal and optical network unit Feb 19, 10 Jan 06, 15 [H04L, H04J, H04Q, H04B]
8,929,750 Signal generating circuit, optical signal transmitting apparatus, signal receiving circuit, method for establishing optical signal synchronization, and optical signal synchronization system May 18, 10 Jan 06, 15 [H04L, H04B]
8,916,389 Sensor element for SPR measurement Jun 26, 07 Dec 23, 14 [G01N]
8,916,946 Optical semiconductor device Mar 04, 14 Dec 23, 14 [H01L]
8,917,642 Station, station control method, and station control program Dec 18, 08 Dec 23, 14 [H04L, H04W, G06F, G08C]

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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]
2011/0132,786 PACKING CONFIGURATION OF CABLE Aug 06, 09 Jun 09, 11 [B65D]
2011/0128,848 CAPACITY VARIABLE LINK APPARATUS AND CAPACITY VARIABLE LINK SETTING METHOD Feb 08, 11 Jun 02, 11 [H04L]
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]
7,787,736 Semiconductor optoelectronic waveguide Jul 15, 08 Aug 31, 10 [G02B]
2010/0217,990 COMMUNICATION METHOD, RELAY SERVER DEVICE, PROGRAM, AND RECORDING MEDIUM May 28, 08 Aug 26, 10 [H04L, G06F]

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