Mai; Qi Ning
Patent Applications and Registrations
Patent applications and USPTO patent grants for Mai; Qi Ning.The latest application filed is for "method and apparatus for reducing deposits in petroleum pipes".
- Mai; Qi Ning - Shanghai CN
| Patent | Date |
|---|---|
| Method and apparatus for reducing deposits in petroleum pipes Grant 8,163,099 - Mai April 24, 2 | 2012-04-24 |
| Method And Apparatus For Reducing Deposits In Petroleum Pipes App 20120067376 - Mai; Qi Ning | 2012-03-22 |
| Method and apparatus for reducing deposits in fluid conduits Grant 8,066,817 - Mai November 29, 2 | 2011-11-29 |
| Method And Apparatus For Reducing Deposits In Fluid Conduits App 20110108057 - Mai; Qi Ning | 2011-05-12 |
| Methods for reducing deposits in petroleum pipes Grant 7,892,360 - Mai February 22, 2 | 2011-02-22 |
| Method And Apparatus For Reducing Deposits In Petroleum Pipes App 20100242989 - Mai; Qi Ning | 2010-09-30 |
| Method and apparatus for reducing deposits in petroleum pipes Grant 7,730,899 - Mai June 8, 2 | 2010-06-08 |
| Method And Apparatus For Reducing Deposits In Petroleum Pipes App 20080295861 - Mai; Qi Ning | 2008-12-04 |
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