BUNKA SHUTTER CO., LTD.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
E06B FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES, OR LIKE ENCLOSURES, IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES 342
 
  
 
E05B LOCKS; ACCESSORIES THEREFOR; HANDCUFFS248
 
  
 
A62C FIRE-FIGHTING 126
 
  
 
E05D HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS, OR WINGS 133
 
  
 
F24F AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING 144

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9810011 Opening/closing deviceNov 06, 13Nov 07, 17[E06B, E05B, E05D]
9670697 Door device with pressure difference mitigating mechanismFeb 07, 13Jun 06, 17[E06B, E05B, A62C, F24F]
6070640 Walk-through type waterproof screen apparatusOct 22, 97Jun 06, 00[E06B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6630235 Bullet-proof glass screen, and bullet-proof glass screen deviceExpiredOct 18, 01Oct 07, 03[C03C, B32B]
6065546 Fire extinguishing and smoke eliminating apparatus and method using water mistExpiredApr 17, 98May 23, 00[A62C]
5072766 Panel shutter assemblyExpiredJan 03, 91Dec 17, 91[E06B]
5065806 Panel shutter assemblyExpiredJan 25, 91Nov 19, 91[E06B]
4838331 Slat opening/closing drive mechanism in shutter equipmentExpiredSep 30, 87Jun 13, 89[E04F]
4595043 Shutter deviceExpiredJun 18, 84Jun 17, 86[E04F]

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