Choi; Kyu Don

Patent Applications and Registrations

Patent applications and USPTO patent grants for Choi; Kyu Don.The latest application filed is for "speaker driver and operation method thereof".

Company Profile

0.4.8

Choi; Kyu Don - Hanam-si KR
CHOI; Kyu Don - Seoul KR
Choi; Kyu-don - Yongin-si KR
Choi; Kyu-don - Gyeonggi-do KR
Choi; Kyu-Don - Kyoungki-do KR

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Speaker driver and operation method thereof Grant 11,284,192 - Park , et al. March 22, 2	2022-03-22
Speaker Driver And Operation Method Thereof App 20210337309 - Park; Ki Tae ; et al.	2021-10-28
Method For Authenticating Electronic Transaction, Server, And Terminal App 20130061051 - KIM; Sung Tae ; et al.	2013-03-07
RF filter and digital broadcast receiving tuner and RF signal processing device using RF filter Grant 7,983,639 - Choi , et al. July 19, 2	2011-07-19
Adjustable Inductor And Wideband Voltage Controlled Oscillator App 20090174493 - Jeon; Sang-yoon ; et al.	2009-07-09
Active Balun App 20080224795 - CHOI; Kyu-don ; et al.	2008-09-18
Rf Filter And Digital Broadcast Receiving Tuner And Rf Signal Processing Device Using Rf Filter App 20080182535 - CHOI; Kyu-don ; et al.	2008-07-31
Transmitter using vertical BJT Grant 7,274,317 - Eo , et al. September 25, 2	2007-09-25
Transmitter using vertical BJT App 20060279444 - Eo; Yun-seong ; et al.	2006-12-14
Method for dynamically lightening backlights of mobile communications terminal Grant 6,930,671 - Choi August 16, 2	2005-08-16
Method for dynamically lightening backlights of mobile communications terminal App 20030112216 - Choi, Kyu-Don	2003-06-19

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