SEI OPTIFRONTIER CO., LTD.

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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 36169
 
  
 
0805 OTHER TOOLS AND IMPLEMENTS428
 
  
 
1509 MACHINE TOOLS, ABRADING AND FOUNDING MACHINERY425
 
  
 
H01R ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS 2131
 
  
 
H04B TRANSMISSION 2208
 
  
 
0301 TRUNKS, SUITCASES, BRIEFCASES, HANDBAGS, KEYHOLDERS, CASES SPECIALLY DESIGNED FOR THEIR CONTENTS, WALLETS AND SIMILAR ARTICLES241
 
  
 
1303 EQUIPMENT FOR DISTRIBUTION OR CONTROL OF ELECTRIC POWER269
 
  
 
A45C PURSES; LUGGAGE; HAND CARRIED BAGS 122
 
  
 
B23K SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM 192
 
  
 
B26D CUTTING; DETAILS COMMON TO MACHINES FOR SEVERING, e.g. BY CUTTING, PERFORATING, PUNCHING, STAMPING-OUT 136

Top Patents (by citation)

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Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2017/0289,653 OPTICAL SWITCHING UNIT AND OPTICAL SWITCHING DEVICEMar 09, 17Oct 05, 17[H04Q, G02B]
2017/0235,050 OPTICAL FIBER CUTTING APPARATUSFeb 06, 17Aug 17, 17[G02B]

Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9921376 Optical fiber with connectorDec 03, 15Mar 20, 18[G02B]
9897756 Fusion-splicing method and fusion splicerFeb 25, 16Feb 20, 18[G02B]
9804344 Optical fiber with connectorDec 03, 15Oct 31, 17[G02B]
D792493 Electrode bar for use in an optical fiber fusion splicerJan 22, 15Jul 18, 17[1509]
9678274 Optical fiber cutterAug 03, 12Jun 13, 17[B26D, G02B]
9583911 Optical amplifierFeb 26, 16Feb 28, 17[H04B, H01S]
9488781 Optical fiber holder and optical fiber fusion-connecting deviceDec 14, 11Nov 08, 16[G02B]
9395492 Optical fiber cutterMar 15, 12Jul 19, 16[B26D, G02B]
D759138 Optical fiber fusion splicerAug 12, 15Jun 14, 16[1509]
9360633 Method for assembling optical connectorDec 14, 11Jun 07, 16[H01R, G02B]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2016/0116,683 CATHETER FOR OPTICAL COHERENCE TOMOGRAPH, AND CATHETER PRODUCTION METHODAbandonedMay 29, 14Apr 28, 16[G02B, A61B]
2013/0284,377 OPTICAL FIBER FUSION-CONNECTING DEVICEAbandonedDec 21, 11Oct 31, 13[G02B]

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