Yoshikawa RF Systems Co., Ltd.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
G08B SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS 193

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
7834753 Data carrier and data carrier systemOct 29, 07Nov 16, 10[G08B, G05B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
8109445 Data carrier and data carrier systemExpiredAug 30, 07Feb 07, 12[G06K]
2010/0013,605 DATA CARRIER AND DATA CARRIER SYSTEMAbandonedAug 30, 07Jan 21, 10[H04Q]
2009/0314,830 DATA CARRIER AND DATA CARRIER SYSTEMAbandonedAug 30, 07Dec 24, 09[G06F, G06K]
7142163 Loop antenna deviceExpiredAug 30, 04Nov 28, 06[H01Q]
6118367 Data carrier systemExpiredNov 20, 97Sep 12, 00[H04Q]
5789991 FSK modulating and demodulating apparatus wherein each binary data is represented by same number of cycles of modulated signalExpiredDec 20, 96Aug 04, 98[H04L, H03D, H03C]

Top Inventors for This Owner

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