Zheng; Dao-Hong
Patent Applications and Registrations
Patent applications and USPTO patent grants for Zheng; Dao-Hong.The latest application filed is for "gas control device and method of supplying gas".
- Zheng; Dao-Hong - Shanghai CN
- Zheng; Dao-Hong - London GB
- Zheng; Dao-Hong - Manor Park GB
| Patent | Date |
|---|---|
| Sub-atmospheric gas delivery method and apparatus Grant 7,013,916 - Pearlstein , et al. March 21, 2 | 2006-03-21 |
| Gas control device and method of supplying gas Grant 6,648,021 - Zheng , et al. November 18, 2 | 2003-11-18 |
| Gas purification unit Grant 6,572,688 - Irven , et al. June 3, 2 | 2003-06-03 |
| Gas control device and method of supplying gas App 20020124883 - Zheng, Dao-Hong ; et al. | 2002-09-12 |
| Gas purification unit App 20020112608 - Irven, John ; et al. | 2002-08-22 |
| Gas control device and method of supplying gas App 20020096211 - Zheng, Dao-Hong ; et al. | 2002-07-25 |
| Gas control device and method of supplying gas App 20020023677 - Zheng, Dao-Hong ; et al. | 2002-02-28 |
| Gas control device and method of supplying gas App 20010039961 - Zheng, Dao-Hong ; et al. | 2001-11-15 |
| Gas control device and method of supplying gas Grant 6,314,986 - Zheng , et al. November 13, 2 | 2001-11-13 |
| Gas control device and method of supplying gas App 20010029979 - Zheng, Dao-Hong ; et al. | 2001-10-18 |
| Control vent system for ultra-high purity delivery system for liquefied compressed gases Grant 6,085,548 - Chowdhury , et al. July 11, 2 | 2000-07-11 |
| Apparatus for supplying high purity fluid Grant 5,409,526 - Zheng , et al. April 25, 1 | 1995-04-25 |
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.
| 