Xingen Lei
21Patents
7h-index
6Co-inventors
58Inventor score
Filing activity: Jun 25, 1998 → Jul 17, 2015
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6974690B2 | Phosphatases with improved phytase activity | Human Necessities | 23 | Expired |
| US6511699B1 | Enzymes with improved phytase activity | Human Necessities | 21 | Expired |
| US6451572B1 | Overexpression of phytase genes in yeast systems | Chemistry; Metallurgy | 20 | Expired |
| US6841370B1 | Site-directed mutagenesis of Escherichia coli phytase | Chemistry; Metallurgy | 20 | Expired |
| US7320876B2 | Phytase-containing animal food and method | Emerging Cross-Sectional Technologies | 16 | Expired |
| US7026150B2 | Overexpression of phytase genes in yeast systems | Chemistry; Metallurgy | 14 | Expired |
| US7833743B2 | Phytase-containing animal food and method | Emerging Cross-Sectional Technologies | 9 | Active |
| US7300781B2 | Site-directed mutagenesis of Escherichia coli phytase | Chemistry; Metallurgy | 7 | Expired |
| US7309505B2 | Using mutations to improve Aspergillus phytases | Chemistry; Metallurgy | 7 | Expired |
| US7829318B2 | Overexpression of phytase genes in yeast systems | Chemistry; Metallurgy | 6 | Active |
| US7736680B2 | Using mutations to improve Aspergillus phytases | Chemistry; Metallurgy | 6 | Active |
| US7312063B2 | Overexpression of phytase genes in yeast systems | Chemistry; Metallurgy | 6 | Expired |
| US7972805B2 | Phytase-containing animal food and method | Emerging Cross-Sectional Technologies | 6 | Active |
| US8192734B2 | Compositions and methods for bone strengthening | Chemistry; Metallurgy | 6 | Active |
| US7919297B2 | Mutants of Aspergillus niger PhyA phytase and Aspergillus fumigatus phytase | Chemistry; Metallurgy | 6 | Active |
| US8540984B2 | Phytases with improved thermal stability | Chemistry; Metallurgy | 5 | Active |
| US9249061B2 | Highly efficient organic fertilizer and components thereof | Emerging Cross-Sectional Technologies | 3 | Active |
| US8455232B2 | Overexpression of phytase genes in yeast systems | Chemistry; Metallurgy | 1 | Active |
| US8551724B2 | Phytase-Containing Animal Food and Method | Emerging Cross-Sectional Technologies | 0 | Active |
| US8993300B2 | Overexpression of phytase genes in yeast systems | Chemistry; Metallurgy | 0 | Active |
| US11077158B2 | Omega-3 fatty acid enrichment of poultry products with defatted microalgae animal feed | Human Necessities | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.