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 287 40
 
 
H04L TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION 191 111
 
 
H04B TRANSMISSION 165 70
 
 
G06F ELECTRIC DIGITAL DATA PROCESSING 129 288
 
 
H04N PICTORIAL COMMUNICATION, e.g. TELEVISION 129 105
 
 
H04J MULTIPLEX COMMUNICATION 118 44
 
 
H01L SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR 87 252
 
 
G10L SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION 60 40
 
 
G02F DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS 51 71
 
 
G06K RECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS 51 137
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Top Patents (by citation)

Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2016/0268,757 OPTICAL FIBER FOR AMPLIFICATION AND OPTICAL FIBER AMPLIFIER USING THE SAME Mar 07, 16 Sep 15, 16 [H01S]
2016/0269,105 OPTICAL COMMUNICATION SYSTEM AND OPTICAL COMMUNICATION ABNORMALITY-RECOVERY METHOD Oct 21, 14 Sep 15, 16 [H04L, H04J, H04Q, H04B]
2016/0261,246 Transimpedance Amplifier Circuit Sep 26, 14 Sep 08, 16 [H03G, H03F, H04B]
2016/0261,339 MULTI-LANE TRANSMISSION DEVICE AND MULTI-LANE TRANSMISSION METHOD May 17, 16 Sep 08, 16 [H04J, H04Q, H04B]
2016/0254,914 KEY DEVICE, KEY CLOUD SYSTEM, DECRYPTION METHOD, AND PROGRAM Oct 07, 14 Sep 01, 16 [H04L]
2016/0254,981 MONITORING DEVICE INFORMATION ANALYZING DEVICE AND METHOD, AND NON-TRANSITORY STORAGE MEDIUM STORING PROGRAM Feb 12, 16 Sep 01, 16 [H04L]
2016/0255,370 MOVING IMAGE ENCODING METHOD, MOVING IMAGE DECODING METHOD, MOVING IMAGE ENCODING APPARATUS, MOVING IMAGE DECODING APPARATUS, MOVING IMAGE ENCODING PROGRAM, AND MOVING IMAGE DECODING PROGRAM Oct 15, 14 Sep 01, 16 [H04N]
2016/0248,448 SPARSE GRAPH CREATION DEVICE AND SPARSE GRAPH CREATION METHOD Oct 08, 14 Aug 25, 16 [G06F, H03M]
2016/0248,539 PROTECTION METHOD AND OPTICAL COMMUNICATION SYSTEM Oct 22, 14 Aug 25, 16 [H04J, H04Q]
2016/0241,352 OPTICAL TRANSMISSION SYSTEM Sep 11, 14 Aug 18, 16 [H04J, H04B]

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9,445,089 Video encoding device, video encoding method and video encoding program Mar 06, 12 Sep 13, 16 [H04N]
9,438,365 Client signal mapping circuit and mapping method Aug 27, 15 Sep 06, 16 [H04J, H04L, H04Q]
9,438,912 Video encoding/decoding methods, video encoding/decoding apparatuses, and programs therefor Mar 07, 12 Sep 06, 16 [H04N, G06T]
9,428,769 Liposome, proteoliposome, biochip, and method for producing liposome and proteoliposome Nov 26, 08 Aug 30, 16 [C12N, C40B, A61K]
9,432,188 Secret sharing system, data distribution apparatus, distributed data transform apparatus, secret sharing method and program Jul 04, 13 Aug 30, 16 [H04L, G06F]
9,413,531 Cryptographic system, cryptographic method, cryptographic program, and decryption device Jul 17, 13 Aug 09, 16 [H04L]
9,407,371 Optical multiplexer/demultiplexer Sep 13, 13 Aug 02, 16 [G02B, H04J, H04B]
9,407,438 Cryptographic system, cryptographic method, and cryptographic program Mar 01, 13 Aug 02, 16 [H04L]
9,401,875 Packet transfer processing method and packet transfer processing device May 31, 13 Jul 26, 16 [H04L]
9,402,087 Picture encoding method, picture decoding method, picture encoding apparatus, picture decoding apparatus, picture encoding program, and picture decoding program Aug 16, 05 Jul 26, 16 [H04N]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
9,247,324 Wavelength selection switch system and method for controlling wavelength selection switch Withdrawn Feb 05, 13 Jan 26, 16 [G02B, H04J, H04Q]
2014/0363,337 CHIP FOR OPTICAL ANALYSIS ABAN Aug 25, 14 Dec 11, 14 [G01N]
2014/0133,546 VIDEO ENCODING DEVICE, VIDEO DECODING DEVICE, VIDEO ENCODING METHOD, VIDEO DECODING METHOD, VIDEO ENCODING PROGRAM, AND VIDEO DECODING PROGRAM ABAN Jun 12, 12 May 15, 14 [H04N]
2014/0010,229 DATA COMMUNICATION SYSTEM, DATA COMMUNICATION TERMINAL, DATA COMMUNICATIN METHOD, AND COMPUTER PROGRAM ABAN Dec 27, 11 Jan 09, 14 [H04L]
2013/0218,764 ELECTRONIC SETTLEMENT METHOD, SYSTEM, SERVER, AND PROGRAM THEREOF ABAN Mar 18, 13 Aug 22, 13 [G06Q]
2013/0136,187 VIDEO ENCODING METHOD, VIDEO DECODING METHOD, VIDEO ENCODING APPARATUS, VIDEO DECODING APPARATUS, AND PROGRAM THEREOF ABAN Aug 05, 11 May 30, 13 [H04N]
2013/0101,028 ENCODING METHOD, DECODING METHOD, DEVICE, PROGRAM, AND RECORDING MEDIUM ABAN Jul 04, 11 Apr 25, 13 [H04N]
2013/0058,584 IMAGE ENCODING AND DECODING FOR MULTI-VIEWPOINT IMAGES ABAN Sep 12, 12 Mar 07, 13 [G06K]
2012/0320,985 MOTION VECTOR PREDICTIVE ENCODING METHOD, MOTION VECTOR PREDICTIVE DECODING METHOD, MOVING PICTURE ENCODING APPARATUS, MOVING PICTURE DECODING APPARATUS, AND PROGRAMS THEREOF ABAN Feb 04, 11 Dec 20, 12 [H04N]
2012/0294,372 MOTION VECTOR PREDICTIVE ENCODING METHOD, MOTION VECTOR PREDICTIVE DECODING METHOD, MOVING PICTURE ENCODING APPARATUS, MOVING PICTURE DECODING APPARATUS, AND PROGRAMS THEREOF ABAN Feb 08, 11 Nov 22, 12 [H04N]
2012/0288,242 OPTICAL MODULE ABAN May 09, 12 Nov 15, 12 [G02B]
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]
8,157,454 Releasable locking mechanism for optical connector Expired Feb 01, 08 Apr 17, 12 [G02B]
8,134,920 Device and method for correcting a path trouble in a communication network Expired Feb 20, 04 Mar 13, 12 [G01R, H04L]
2012/0053,949 ENCODING DEVICE, DECODING DEVICE, ENCODING METHOD, DECODING METHOD AND PROGRAM THEREFOR ABAN May 28, 10 Mar 01, 12 [G10L]
8,126,712 Information communication terminal, information communication system, information communication method, and storage medium for storing an information communication program thereof for recognizing speech information Expired Feb 08, 06 Feb 28, 12 [G10L]
8,120,930 Rush current reduction circuit and electric appliance Expired Oct 19, 06 Feb 21, 12 [H02M]
2012/0033,923 HOLEY SINGLE-MODE OPTICAL FIBER AND OPTICAL TRANSMISSION SYSTEM USING SAME ABAN Oct 14, 11 Feb 09, 12 [G02B]
2011/0304,897 Optical Semiconductor Module and Method for Assembling the Same ABAN Oct 09, 09 Dec 15, 11 [G02B, G02F, H01L]

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