GEM WELTRONICS TWN CORPORATION

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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 7355
 
  
 
F21V FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR 2108
 
  
 
H05K PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS 2154
 
  
 
B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM1156
 
  
 
B60Q ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL 163
 
  
 
F21K LIGHT SOURCES NOT OTHERWISE PROVIDED FOR139
 
  
 
G02B OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS 1204
 
  
 
H01J ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS 1127
 
  
 
H05B ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR 1110
 
  
 
2604 LUMINOUS SOURCES, ELECTRICAL OR NOT135

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9121579 Method for manufacturing integrally formed multi-layer light-emitting deviceApr 27, 12Sep 01, 15[F21V, F21Y, F21K, H05K]
8871534 Method for fabricating led light tubeSep 06, 13Oct 28, 14[H01L]
8789976 Integrated multi-layered illuminating unit and integrated multi-layered illuminating assembling unitJul 06, 12Jul 29, 14[F21V]
8772819 Multi-layer array type LED deviceJan 19, 12Jul 08, 14[H01L]
8714797 Integrally formed multi-layer light-emitting deviceMar 09, 12May 06, 14[B60Q]
8575645 Thin multi-layer LED array engineNov 22, 11Nov 05, 13[H01L]
8496771 Method of filling and sealing a fluorescent layer in a slot space defined by two optical lenses and a partition ringJan 26, 11Jul 30, 13[B32B]
D685115 LED bulbSep 26, 12Jun 25, 13[2604]
8445936 Integrally formed high-efficient multi-layer light-emitting deviceJun 13, 12May 21, 13[H01L]
8338851 Multi-layer LED array engineMar 17, 10Dec 25, 12[H01L]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2015/0070,881 LED LIGHT TUBE OF MODULE TYPEAbandonedSep 06, 13Mar 12, 15[F21V, F21K]
2014/0321,109 LIGHT EMITTING DIODE (LED) LIGHT TUBEAbandonedApr 27, 13Oct 30, 14[F21V, F21K]
2014/0313,711 LIGHT EMITTING DIODE (LED) LIGHT TUBEAbandonedApr 17, 13Oct 23, 14[F21V]
2014/0301,069 LIGHT EMITTING DIODE LIGHT TUBEAbandonedApr 08, 13Oct 09, 14[F21V, F21K]
2013/0223,061 MULTI-LAYER ARRAY TYPE LED DEVICE HAVING A MULTI-LAYER HEAT DISSIPATION STRUCTUREAbandonedFeb 29, 12Aug 29, 13[F21V]
2012/0057,343 ILLUMINATING APPARATUS HAVING HEAT DISSIPATION BASE AND MULTILAYER ARRAY-TYPE LED MODULEAbandonedSep 07, 10Mar 08, 12[F21V]

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