CITIZEN HOLDINGS CO., LTD.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
 
 
H01L SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR 106223
 
 
 
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 8246
 
 
 
G04B MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME-PIECES USING THE POSITION OF THE SUN, MOON, OR STARS 747
 
 
 
B41J TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS 5748
 
 
 
G04C ELECTROMECHANICAL CLOCKS OR WATCHES 433
 
 
 
1002 WATCHES AND WRIST WATCHES385
 
 
 
B23B TURNING; BORING 3320
 
 
 
G02B OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS 33153
 
 
 
G09G ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION 33107
 
 
 
F21V FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR 3165

Top Patents (by citation)

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Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2016/0116,140 LIGHT-EMITTING APPARATUS AND METHOD OF MANUFACTURING THE SAMEOct 22, 15Apr 28, 16[F21K, F21V, H01L]
2016/0109,853 WATCHJun 19, 14Apr 21, 16[G04B]
2016/0113,077 LED DRIVE CIRCUITOct 09, 15Apr 21, 16[H05B]
2016/0104,587 PUSH SWITCHOct 07, 15Apr 14, 16[H01H]
2016/0085,014 PLANAR LIGHT UNITApr 28, 15Mar 24, 16[F21V]
2016/0070,049 PLANAR LIGHTING DEVICESep 09, 15Mar 10, 16[F21V]
2016/0070,211 IMAGE FORMING APPARATUS AND IMAGE FORMING METHODJan 07, 15Mar 10, 16[B41J]
2016/0071,665 PUSH SWITCH AND SWITCH MODULEApr 25, 14Mar 10, 16[H01H]
2016/0052,070 CHAMFER MACHINING METHODApr 25, 14Feb 25, 16[B24B, B23C]
2016/0053,360 HARD DECORATIVE MEMBER HAVING GRAY-TONE LAYERMar 19, 14Feb 25, 16[C23C]

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
D754549 Wrist watch caseMar 25, 14Apr 26, 16[1002]
D754550 Wrist watch caseMar 25, 14Apr 26, 16[1002]
9,317,017 Satellite radio-controlled wristwatchJul 10, 13Apr 19, 16[G04R]
9,310,203 Physical quantity sensorMar 30, 11Apr 12, 16[G01P, G01C]
9,310,777 Radio-controlled wristwatchAug 01, 12Apr 12, 16[G04R, G01S, G04G]
9,304,358 Liquid crystal device and method of manufacturing liquid crystal deviceMar 10, 11Apr 05, 16[G02F]
9,296,047 Fixing device for workpiece in machine tool and machine tool having the fixing deviceNov 14, 11Mar 29, 16[B23B]
9,297,945 Light source device and projection deviceJun 17, 14Mar 29, 16[G02B, F21V]
9,289,139 Blood pressure monitorSep 09, 11Mar 22, 16[A61B]
9,289,871 Workpiece recovery unitFeb 22, 12Mar 22, 16[B23Q]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
9,195,114 Optical deviceWithdrawnMay 22, 12Nov 24, 15[G02B, G02F]
9,175,620 Internal combustion engine fitted with combustion pressure detection deviceWithdrawnMar 15, 13Nov 03, 15[F02B, F02D, G01L]
2013/0256,201 WORKPIECE SEPARATION APPARATUSABANDec 13, 11Oct 03, 13[B03B]
2013/0094,800 OPTICAL DEVICE AND METHOD FOR MANUFACTURING THE OPTICAL DEVICEABANOct 04, 12Apr 18, 13[G02B, B23K]
2012/0256,550 LED DRIVING CIRCUITABANNov 24, 10Oct 11, 12[H05B]
2012/0128,024 TEMPERATURE MEASURING DEVICEABANNov 22, 11May 24, 12[G01K]
8,145,348 Tool selection method for machine tool, control device, and numerically controlled latheExpiredSep 11, 08Mar 27, 12[G06F, G06K]
8,130,332 Liquid crystal optical modulation element, liquid crystal optical modulation device and method for driving liquid crystal optical modulation elementWithdrawnNov 12, 07Mar 06, 12[G02F]
2011/0267,570 ELECTRO-OPTICAL DEVICEABANFeb 26, 09Nov 03, 11[G02F]
8,049,840 Double-sided display apparatusExpiredAug 17, 05Nov 01, 11[G02F]
2011/0261,394 PRINTER STANDABANJan 14, 11Oct 27, 11[G06F, H05K]
7,924,301 Image forming apparatus for disk-shaped mediaExpiredMar 28, 07Apr 12, 11[B41J]
7,884,789 Display apparatusExpiredAug 11, 05Feb 08, 11[G09G]
7,875,870 Recording medium type identification device with optical sensorsExpiredMar 31, 08Jan 25, 11[H05K, G01N, G06K]
7,834,957 Display device employing light control member and display device manufacturing methodExpiredApr 30, 07Nov 16, 10[G02F]
2010/0255,338 DECORATIVE PARTABANSep 18, 08Oct 07, 10[B32B]
2010/0247,215 NEAR-END OF ROLL DETECTING APPARATUS FOR DETECTING NEAR-END OF ROLL OF RECORDING MEDIUM, AND PRINTERABANMar 12, 10Sep 30, 10[B41J, B65H]
7,801,315 Method and device for driving a directional speakerExpiredDec 17, 04Sep 21, 10[H04B]
2010/0157,587 LIGHT-EMITTING UNIT AND ELECTRONIC DEVICE USING THE SAMEABANDec 22, 09Jun 24, 10[F21V]
7,733,440 Liquid crystal display deviceExpiredMay 31, 07Jun 08, 10[G02F]

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