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Patent applications and USPTO patent grants for Liu; Xiang Dong.The latest application filed is for "cigarette filter capable of removing harmful substance".
Patent | Date |
---|---|
Apparatus for ultrasonic vibration-assisted machining Grant 7,692,360 - Liu , et al. April 6, 2 | 2010-04-06 |
Cigarette filter capable of removing harmful substance App 20090272392 - Liu; Xiang Dong ;   et al. | 2009-11-05 |
Method For Removing Harmful Substances And Filter For Removing Harmful Substances App 20080173177 - Liu; Xiang Dong ;   et al. | 2008-07-24 |
Apparatus For Ultrasonic Vibration-Assisted Machining App 20070257579 - Liu; Xiang Dong ;   et al. | 2007-11-08 |
Method of concentrating and removing harmful substance using double-stranded dna and adsorbent and apparatus therefor App 20060110816 - Liu; Xiang Dong ;   et al. | 2006-05-25 |
Method for removing noxious substances and filter for removing harmful substances App 20040211728 - Liu, Xiang Dong ;   et al. | 2004-10-28 |
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