Duan; Shizhong
Patent Applications and Registrations
Patent applications and USPTO patent grants for Duan; Shizhong.The latest application filed is for "sheet stabilizer with suction nozzle having center protrusion".
- Duan; Shizhong - Vancouver CA
- Duan; Shizhong - Coquitlam CA
| Patent | Date |
|---|---|
| Track barcode systems for railroad management Grant 9,045,151 - Duan June 2, 2 | 2015-06-02 |
| Sheet stabilizer with suction nozzle having center protrusion Grant 9,045,306 - Duan June 2, 2 | 2015-06-02 |
| Sheet Stabilizer With Suction Nozzle Having Center Protrusion App 20150097070 - Duan; Shizhong | 2015-04-09 |
| Track Barcode Systems for Railroad Management App 20140367462 - Duan; Shizhong | 2014-12-18 |
| Sheet Stabilizer with Suction Nozzle having Center Protrusion App 20090134565 - Duan; Shizhong | 2009-05-28 |
| Steam distributor for steam showers Grant 7,452,447 - Duan , et al. November 18, 2 | 2008-11-18 |
| Steam water spray systems Grant 6,962,296 - Hamel , et al. November 8, 2 | 2005-11-08 |
| Spraying nozzle for rewet showers Grant 6,869,031 - Duan March 22, 2 | 2005-03-22 |
| Steam distributor for steam showers App 20040168784 - Duan, Shizhong ; et al. | 2004-09-02 |
| Steam water spray systems App 20040074981 - Hamel, Robert G. ; et al. | 2004-04-22 |
| Method of wetting webs of paper or other hygroscopic material Grant 6,699,365 - Duan March 2, 2 | 2004-03-02 |
| Spraying nozzle for rewet showers App 20040016828 - Duan, Shizhong | 2004-01-29 |
| Spraying nozzle for rewet showers App 20030094254 - Duan, Shizhong | 2003-05-22 |
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