Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12292430 | Soil testing device | — | 2025-05-06 |
| 12196738 | Soil testing device | — | 2025-01-14 |
| 12007378 | Soil testing device | — | 2024-06-11 |
| 11742509 | Energy generation from salinity gradients using asymmetrically porous electrodes | Tianwei Ma | 2023-08-29 |
| D974202 | Soil tester | — | 2023-01-03 |
| D961413 | Soil moisture meter | — | 2022-08-23 |
| D959961 | Waterwheel | — | 2022-08-09 |
| 11300020 | Quantitative one-way oil gas lubricant system and method for 4-stroke engine | Zhijun Li | 2022-04-12 |
| 10873276 | Apparatus and method for harvesting ambient energy by circuit reconfiguration | Tianwei Ma, Enze Ma | 2020-12-22 |
| 10848079 | Ambient energy harvesting device with charge-carrying movable electrode | Tianwei Ma, Enze Ma | 2020-11-24 |
| D894763 | Soil tester | — | 2020-09-01 |
| 9796988 | Processes for producing microbial copolyesters from sucrose-containing feedstocks | — | 2017-10-24 |
| 9758440 | Method and device for catalytic methanation of synthesis gas | Guangwen Xu, Jiao Liu, Dianmiao Cui | 2017-09-12 |
| 9446385 | Surface deposition-type honeycomb catalyst for flue gas denitrification and preparation method thereof | Feng Guo, Juan Yang, Yin Wang, Li Dong, Shiqiu Gao +1 more | 2016-09-20 |
| 8528384 | Method of determining surface pore mouth diameter distribution of porous material | Yan Huang | 2013-09-10 |
| 7514525 | Recovery and purification of polyhydroxyalkanoates | — | 2009-04-07 |
| 7141400 | Production of biodegradable thermoplastic materials from organic wastes | — | 2006-11-28 |
| 6475645 | Surface treatment of steel | Paul Alexander Osman, Haibo Yan, Laurence Charles Archibald, Samuel James Harris | 2002-11-05 |
| 5431360 | Airplane passenger seat | — | 1995-07-11 |