KABUSHIKIKAISHA DAIICHIKOSHO

Patent Owner

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
A63H TOYS, e.g. TOPS, DOLLS, HOOPS, BUILDING BLOCKS131
 
  
 
G09B EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS 142
 
  
 
G10H ELECTROPHONIC MUSICAL INSTRUMENTS 130
 
  
 
H04R LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS 1106

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6681019 POLARITY DETERMINING CIRCUIT FOR LOUDSPEAKERS, AN AUDIO CIRCUIT HAVING A FUNCTION OF DETERMINING POLARITIES OF LOUDSPEAKERS, AND AN AUDIO CIRCUIT HAVING FUNCTIONS OF DETERMINING POLARITIES OF LOUDSPEAKERS AND SWITCHING THE POLARITIESSep 21, 99Jan 20, 04[H04R]
6352432 Karaoke apparatusMar 23, 98Mar 05, 02[G09B, G10H, A63H]

Expired/Abandoned/Withdrawn Patents

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Top Inventors for This Owner

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