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Trademarks = 1

Forward Citations = 133

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9 inventors (with patents filed for the assignee):

Beng Huat Chua (7 out of 8 patents)

Chee Oei Chan (7 out of 28 patents)

Kah Yong Lee (4 out of 36 patents)

4. Chee Kong Siew (4 out of 7 patents)

5. Chong Lim Neoh (2 out of 5 patents)

6. Chua Beng Huat (1 out of 1 patent)

7. Chan Chee Oei (1 out of 3 patents)

8. Siew Chee Kong (1 out of 1 patent)

9. Bena Huat Chua (1 out of 1 patent)

12 patents: Sort by Forward Citations

1. 7680202 - Digital wireless audio communication system employing time diversity (2010-03-16),

2. 7555031 - Digital wireless audio receiver system employing time diversity (2009-06-30),

3. 7551681 - Digital wireless audio transmitter system employing time diversity (2009-06-23),

4. 7289560 - Digital modulation and demodulation technique for reliable wireless (both RF and IR) and wired high bandwidth data transmission (2007-10-30),

5. 7236549 - Digital switching wireless receiver diversity and buffer diversity for enhanced reception in a wireless digital audio communication system (2007-06-26),

6. 6741659 - Wireless infrared digital audio transmitting system (2004-05-25),

7. 6728585 - Personal on-demand audio entertainment device that is untethered and allows wireless download of content (2004-04-27),

8. 6671325 - Wireless infrared digital audio system (2003-12-30),

9. 6668204 - Biaural (2channel listening device that is equalized in-stu to compensate for differences between left and right earphone transducers and the ears themselves (2003-12-23),

10. 6614849 - Wireless infrared digital audio receiving system (2003-09-02),

11. 6614024 - Infra-red wireless receiver with novel shielding and IR front end signal enhancement (2003-09-02),

12. 6510182 - Wireless infrared digital audio system (2003-01-21),

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USPTO Data Jan 1 1976 - Dec 23 2025

12 Patents

#170 in Singapore

#171 in Singapore

#46,701 in the World

Singapore, Singapore

Freesystems Pte Ltd