WOOSUNG TECH. CO., LTD.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B62B HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES 127
 
  
 
F21K LIGHT SOURCES NOT OTHERWISE PROVIDED FOR139
 
  
 
F21S NON-PORTABLE LIGHTING DEVICES OR SYSTEMS THEREOF 155
 
  
 
F21V FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR 1109
 
  
 
H05B ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR 1110

Top Patents (by citation)

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Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2018/0066,807 LED FLUORESCENT LAMP USING FAR-INFRARED RADIATION WITHOUT HEAT SINKMay 19, 16Mar 08, 18[F21V, F21K, F21S]

Recent Patents

Patent # Title Filing Date Issue Date Intl Class
8881852 Pushable frame with generators that convert kinetic energy into electric energySep 20, 10Nov 11, 14[A61H, B62B]
8648542 Ballast circuit for LED lampNov 03, 11Feb 11, 14[H05B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2013/0161,135 Apparatus for brake of walking support machineAbandonedDec 23, 11Jun 27, 13[A61H, B60T]
2011/0084,534 HEADREST FOLDING STRUCTURE FOR A VEHICLEAbandonedOct 13, 09Apr 14, 11[A47C, B60N]
7441633 Apparatus for automatic brake of walking support machineExpiredNov 21, 07Oct 28, 08[B62M]

Top Inventors for This Owner

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