NIPPON TELEGRAPH AND TELEPHONE CORPORATION

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology MATTERS Rank in Class
 
 
G02B OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS 282 35
 
 
H04L TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION 147 104
 
 
H04B TRANSMISSION 145 78
 
 
G06F ELECTRIC DIGITAL DATA PROCESSING 121 275
 
 
H04N PICTORIAL COMMUNICATION, e.g. TELEVISION 116 99
 
 
H04J MULTIPLEX COMMUNICATION 104 44
 
 
H01L SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR 88 227
 
 
G10L SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION 58 38
 
 
G06K RECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS 54 121
 
 
H01S DEVICES USING STIMULATED EMISSION 49 46
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Top Patents (by citation)

Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2015/0131,991 OPTICAL NETWORK SYSTEM, OPTICAL SWITCH NODE, MASTER NODE, AND NODE Jun 13, 13 May 14, 15 [H04J, H04Q]
2015/0103,673 FRAME TRANSMISSION APPARATUS AND METHOD FOR CHECKING NORMALITY Jun 13, 14 Apr 16, 15 [H04L]
2015/0098,566 CRYPTOGRAPHIC SYSTEM, CRYPTOGRAPHIC METHOD, CRYPTOGRAPHIC PROGRAM, AND DECRYPTION DEVICE Jul 17, 13 Apr 09, 15 [H04L]
2015/0088,529 ENCODING METHOD, ENCODER, PROGRAM AND RECORDING MEDIUM May 29, 13 Mar 26, 15 [G10L]
2015/0074,177 USER EXPERIENCED QUALITY ESTIMATION APPARATUS, TERMINAL BOTTLENECK DETERMINATION APPARATUS, SIMILAR OPERATION EXTRACTION APPARATUS, METHOD AND PROGRAM Mar 29, 13 Mar 12, 15 [H04L]
2015/0049,997 OPTICAL FIBER RIBBON AND OPTICAL FIBER CABLE HOUSING THE OPTICAL FIBER RIBBON Aug 28, 14 Feb 19, 15 [G02B]
2015/0046,172 ENCODING METHOD, DECODING METHOD, ENCODER, DECODER, PROGRAM AND RECORDING MEDIUM May 22, 13 Feb 12, 15 [G10L]
2015/0035,625 INDUCTOR Sep 14, 11 Feb 05, 15 [H03H, H01F]
2015/0036,210 OPTICAL AMPLIFIER DEVICE Jan 20, 12 Feb 05, 15 [H01S]
2015/0030,327 WAVELENGTH SELECTION SWITCH SYSTEM AND METHOD FOR CONTROLLING WAVELENGTH SELECTION SWITCH Feb 05, 13 Jan 29, 15 [H04Q]

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9,031,338 Image encoding method and apparatus, image decoding method and apparatus, and programs therefor Sep 21, 11 May 12, 15 [H04N, G06T, G06K]
9,031,339 Image encoding method, image decoding method, image encoding device, image decoding device, image encoding program, and image decoding program Mar 13, 12 May 12, 15 [H04N, G06T, G06K]
9,025,970 Optical signal cutoff detection circuit and optical receiver Feb 14, 11 May 05, 15 [H04B]
9,020,307 Optical waveguide device and module Nov 26, 10 Apr 28, 15 [G02B]
9,020,361 Optical signal transmitter, and bias voltage control method Sep 07, 10 Apr 28, 15 [G02F, H04B]
9,004,781 Method for reinforcing a splice part and reinforcing structure Mar 10, 10 Apr 14, 15 [G02B]
9,006,854 Avalanche photodiode Sep 01, 11 Apr 14, 15 [H01L]
9,008,173 Image encoding and decoding apparatuses, image encoding and decoding methods, programs thereof, and recording media recorded with the programs Oct 14, 08 Apr 14, 15 [H04N]
9,008,742 Constituent concentration measuring apparatus and constituent concentration measuring apparatus controlling method Nov 05, 12 Apr 14, 15 [A61B, G01N]
9,001,897 Video quality estimation apparatus, video quality estimation method, and program Mar 25, 10 Apr 07, 15 [H04N, G06T]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2013/0058,584 IMAGE ENCODING AND DECODING FOR MULTI-VIEWPOINT IMAGES ABAN Sep 12, 12 Mar 07, 13 [G06K]
2012/0172,735 BLOOD PRESSURE MEASURING APPARATUS AND BLOOD PRESSURE MEASURING METHOD ABAN Mar 16, 12 Jul 05, 12 [A61B]
2012/0123,788 CODING METHOD, DECODING METHOD, AND DEVICE AND PROGRAM USING THE METHODS ABAN Jun 22, 10 May 17, 12 [H04B, G10L]
2011/0304,897 Optical Semiconductor Module and Method for Assembling the Same ABAN 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 ABAN 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 Withdrawn Apr 02, 09 Aug 30, 11 [H04B]
2011/0170,832 OPTICAL TRANSCEIVER MODULE AND METHOD OF MANUFACTURING THE OPTICAL TRANSCEIVER MODULE ABAN Jan 04, 11 Jul 14, 11 [B23P, G02B]
2011/0141,458 Coated Optical Fiber Identifying Apparatus and Coated Optical Fiber Identifying Method ABAN Jun 30, 09 Jun 16, 11 [G01N]
2011/0132,786 PACKING CONFIGURATION OF CABLE ABAN Aug 06, 09 Jun 09, 11 [B65D]
2011/0128,848 CAPACITY VARIABLE LINK APPARATUS AND CAPACITY VARIABLE LINK SETTING METHOD ABAN Feb 08, 11 Jun 02, 11 [H04L]
2011/0116,745 OPTICAL CONNECTOR, AND ASSEMBLING METHOD OF OPTICAL CONNECTOR ABAN Jan 24, 11 May 19, 11 [G02B]
2011/0108,579 PUMP RETENTION COLLAR AND METHODS FOR USING THE SAME ABAN May 19, 09 May 12, 11 [G01F, B65D]
7,912,087 Capacity variable link apparatus and capacity variable link setting method Expired Jan 21, 03 Mar 22, 11 [G01R, H04J]
7,907,895 Electric field sensor device, transceiver, positional information obtaining system and information input system Expired Jun 29, 04 Mar 15, 11 [H04B]
7,894,700 Holding member for optical distribution frame and optical distribution frame Expired Jul 09, 09 Feb 22, 11 [G02B]
2011/0026,585 VIDEO QUALITY OBJECTIVE ASSESSMENT METHOD, VIDEO QUALITY OBJECTIVE ASSESSMENT APPARATUS, AND PROGRAM ABAN Mar 23, 09 Feb 03, 11 [H04N]
2011/0013,694 VIDEO QUALITY OBJECTIVE ASSESSMENT METHOD, VIDEO QUALITY OBJECTIVE ASSESSMENT APPARATUS, AND PROGRAM ABAN Mar 23, 09 Jan 20, 11 [H04N, G06K]
7,859,666 Electric field sensor Expired Jul 28, 04 Dec 28, 10 [G01R]
2010/0285,612 FLOW RATE MEASUREMENT APPARATUS, ANTIGEN CONCENTRATION MEASUREMENT APPARATUS, FLOW CELL, FLOW RATE MEASUREMENT METHOD, AND ANTIGEN CONCENTRATION MEASURING METHOD ABAN 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 ABAN Jun 11, 10 Sep 30, 10 [H04Q]

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