SEIWA ELECTRIC MFG. 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 1204
 
  
 
H01B CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING, OR DIELECTRIC PROPERTIES 173
 
  
 
H01L SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR 1361
 
  
 
H05K PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS 1155

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9261665 Locking devise for optical drop cableAug 09, 13Feb 16, 16[G02B]
5296718 Light emitting semiconductor device having multilayer structureFeb 18, 92Mar 22, 94[H01L]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2012/0125,169 SEMICONDUCTOR LIGHT-EMITTING DEVICE MEASUREMENT APPARATUSAbandonedNov 18, 11May 24, 12[B26D, B23K]
2011/0284,883 SEMICONDUCTOR LIGHT-EMITTING ELEMENT, LIGHT-EMITTING DEVICE, LUMINAIRE, DISPLAY UNIT, TRAFFIC SIGNAL LAMP UNIT, AND TRAFFIC INFORMATION DISPLAY UNITAbandonedMay 24, 11Nov 24, 11[H01L]
7265486 Light emitting diode including a cover covering a light emitting diode elementExpiredJul 29, 04Sep 04, 07[H05B]
2006/0056,945 PARTS TRANSFERRING APPARATUSAbandonedAug 05, 05Mar 16, 06[B65G]
7005086 Fluorescent substance, light-emitting diode and method for producing fluorescent substanceExpiredNov 06, 03Feb 28, 06[C09K]

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