Cheng; Ka Wai Eric
Patent Applications and Registrations
Patent applications and USPTO patent grants for Cheng; Ka Wai Eric.The latest application filed is for "living body detection method and apparatus".
- Cheng; Ka Wai Eric - Hong Kong HK
- CHENG; Ka Wai Eric - Kowloon Hong Kong
- Cheng; Ka Wai Eric - Hung Hom HK
- Cheng; Ka Wai Eric - Hong Kong SAR CN
| Patent | Date |
|---|---|
| Living body detection method and apparatus Grant 11,264,987 - Cheng , et al. March 1, 2 | 2022-03-01 |
| Living Body Detection Method And Apparatus App 20210409022 - Cheng; Ka Wai Eric ; et al. | 2021-12-30 |
| Method and apparatus for load monitoring Grant 11,211,795 - Cheng , et al. December 28, 2 | 2021-12-28 |
| Power Transmission Apparatus And Methods App 20200373048 - Cheng; Ka Wai Eric | 2020-11-26 |
| Living body detection method and apparatus Grant 10,819,340 - Cheng , et al. October 27, 2 | 2020-10-27 |
| Inductive power transfer using diverted magnetic field Grant 10,693,321 - Cheng , et al. | 2020-06-23 |
| Method And Apparatus For Load Monitoring App 20200195008 - Cheng; Ka Wai Eric ; et al. | 2020-06-18 |
| Power supply control Grant 10,680,530 - Cheng , et al. | 2020-06-09 |
| Living Body Detection Method And Apparatus App 20190363712 - CHENG; Ka Wai Eric ; et al. | 2019-11-28 |
| Voltage balancing circuit Grant 10,418,825 - Cheng , et al. Sept | 2019-09-17 |
| Power Supply Control App 20190190395 - Cheng; Ka Wai Eric ; et al. | 2019-06-20 |
| Inductive Power Transfer Using Diverted Magnetic Field App 20190157906 - CHENG; Ka Wai Eric ; et al. | 2019-05-23 |
| Power supply control Grant 10,211,623 - Cheng , et al. Feb | 2019-02-19 |
| Power Supply Control App 20180152015 - CHENG; Ka Wai Eric ; et al. | 2018-05-31 |
| Voltage Balancing Circuit App 20170310128 - Cheng; Ka Wai Eric ; et al. | 2017-10-26 |
| Active suspension system and method Grant 8,833,780 - Cheng , et al. September 16, 2 | 2014-09-16 |
| In-wheel switched reluctance motor drive Grant 8,544,580 - Cheng , et al. October 1, 2 | 2013-10-01 |
| Active Suspension System And Method App 20130161921 - Cheng; Ka Wai Eric ; et al. | 2013-06-27 |
| Battery Operated Devices App 20120262067 - Tam; Siu Chung ; et al. | 2012-10-18 |
| Polymer-bonded magnetic materials Grant 8,277,678 - Cheng , et al. October 2, 2 | 2012-10-02 |
| Energy-saving controller for three-phase induction motors Grant 8,217,618 - Cheng , et al. July 10, 2 | 2012-07-10 |
| Solar Powered Vehicle Air-conditioning System App 20120096885 - MAK; Shui Hung ; et al. | 2012-04-26 |
| Automobile Hybrid Air Conditioning System App 20120055175 - Ting; Wai Lam ; et al. | 2012-03-08 |
| HID ballast with integrated voltage multiplier and lamp temperature compensation Grant 8,080,949 - Cheng , et al. December 20, 2 | 2011-12-20 |
| In-wheel Switched Reluctance Motor Drive App 20110284300 - Cheng; Ka Wai Eric ; et al. | 2011-11-24 |
| Converter Circuit App 20110018480 - Cheng; Ka Wai Eric ; et al. | 2011-01-27 |
| Electronic circuit board Grant 7,675,401 - Cheng , et al. March 9, 2 | 2010-03-09 |
| Core having magnetic properties Grant 7,381,483 - Cheng , et al. June 3, 2 | 2008-06-03 |
| Electronic circuit board App 20050263321 - Cheng, Ka Wai Eric ; et al. | 2005-12-01 |
| Core and composition having magnetic properties App 20050151123 - Cheng, Ka Wai Eric ; et al. | 2005-07-14 |
| DC to DC converter Grant 6,853,569 - Cheng , et al. February 8, 2 | 2005-02-08 |
| DC to DC converter App 20040141345 - Cheng, Ka Wai Eric ; et al. | 2004-07-22 |
| Electronic circuit board App 20040065471 - Tang, Chak Yin ; et al. | 2004-04-08 |
| Composite magnetic material App 20030235705 - Cheng, Ka Wai Eric ; et al. | 2003-12-25 |
uspto.report is an independent third-party trademark research tool that is not affiliated, endorsed, or sponsored by the United States Patent and Trademark Office (USPTO) or any other governmental organization. The information provided by uspto.report is based on publicly available data at the time of writing and is intended for informational purposes only.
While we strive to provide accurate and up-to-date information, we do not guarantee the accuracy, completeness, reliability, or suitability of the information displayed on this site. The use of this site is at your own risk. Any reliance you place on such information is therefore strictly at your own risk.
All official trademark data, including owner information, should be verified by visiting the official USPTO website at www.uspto.gov. This site is not intended to replace professional legal advice and should not be used as a substitute for consulting with a legal professional who is knowledgeable about trademark law.
| 