Choi; Kyu Dong
Patent Applications and Registrations
Patent applications and USPTO patent grants for Choi; Kyu Dong.The latest application filed is for "microspeaker enclosure with porous materials in resonance space".
- Choi; Kyu Dong - Gyeongsangnam-do KR
- CHOI; Kyu Dong - Seoul KR
- Choi; Kyu Dong - Changwon-si KR
- Choi; Kyu Dong - Changwon KR
| Patent | Date |
|---|---|
| Microspeaker enclosure with porous materials in resonance space Grant 10,419,848 - Choi , et al. Sept | 2019-09-17 |
| Microspeaker enclosure with porous materials in resonance space Grant 10,419,847 - Choi , et al. Sept | 2019-09-17 |
| Suspension for high power micro speaker and high power micro speaker having the same Grant 9,900,703 - Kim , et al. February 20, 2 | 2018-02-20 |
| Microspeaker Enclosure with Porous Materials in Resonance Space App 20170359649 - Choi; Kyu Dong ; et al. | 2017-12-14 |
| Microspeaker Enclosure with Porous Materials in Resonance Space App 20170353785 - Choi; Kyu Dong ; et al. | 2017-12-07 |
| Length-reducing Syringe Driving Device App 20170049968 - CHOI; Kyu Dong | 2017-02-23 |
| Device And Method For Injecting Drug App 20160331903 - CHOI; Kyu Dong | 2016-11-17 |
| Sound transducer with ventilation structure Grant 9,473,837 - Choi , et al. October 18, 2 | 2016-10-18 |
| Suspension for a sound transducer Grant 9,277,305 - Kwon , et al. March 1, 2 | 2016-03-01 |
| Inner magnet type microspeaker Grant 9,185,494 - Choi , et al. November 10, 2 | 2015-11-10 |
| Vibration module for sound transducer Grant 9,088,840 - Choi , et al. July 21, 2 | 2015-07-21 |
| High-output microspeaker Grant 9,025,808 - Kwon , et al. May 5, 2 | 2015-05-05 |
| Inner Ring Magnet Type Microspeaker App 20140241566 - Choi; Kyu Dong ; et al. | 2014-08-28 |
| High-output Microspeaker App 20140169593 - Kwon; Joong Hak ; et al. | 2014-06-19 |
| Vibration Module For Sound Transducer App 20140119578 - Choi; Kyu Dong ; et al. | 2014-05-01 |
| Sound Transducer With Ventilation Structure App 20140119592 - Choi; Kyu Dong ; et al. | 2014-05-01 |
| Suspension For High Power Micro Speaker And High Power Micro Speaker Having The Same App 20140056463 - Kim; Cheon Myeong ; et al. | 2014-02-27 |
| Suspension For A Sound Transducer App 20140029784 - Kwon; Joong Hak ; et al. | 2014-01-30 |
| Portable Mechanical Insulin Injection Device App 20080021376 - Choi; Kyu-Dong | 2008-01-24 |
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