| # | Country | Total Patents | |
|---|---|---|---|
| #1 | China | 75 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Packaging and shipping | |
| #3 | Foods and drinks | |
| #4 | Chemical engineering | |
| #5 | Engines, pumps and turbines |
| # | Technology | |
|---|---|---|
| #1 | Gearing | |
| #2 | Elevators and escalators | |
| #3 | Lubricating | |
| #4 | Cleaning | |
| #5 | Rotary-pistons | |
| #6 | Safety devices | |
| #7 | Winches | |
| #8 | Cranes | |
| #9 | Dough making machines |
| # | Name | Total Patents |
|---|---|---|
| #1 | Ren Zhijiang | 73 |
| #2 | Wu Qi | 1 |
| #3 | Hua Donghao | 1 |
| Publication | Filing date | Title |
|---|---|---|
| CN107879223A | The levelling gear of monorail staircase | |
| CN107879224A | adjustable type track | |
| CN106122439A | Outer shroud oilgear | |
| CN106195213A | Heat radiation gear | |
| CN106122432A | Noise-reducing gear | |
| CN106122441A | Multi-layer gear | |
| CN106122438A | Manual rotation type gear | |
| CN106122442A | Frosted type gear | |
| CN106122440A | Add solid gear | |
| CN106151454A | Reinforcement type gear | |
| CN106122434A | Lubricating type gear | |
| CN106122433A | Anti-skidding gear | |
| CN106122437A | Separate type gear | |
| CN106122431A | Reinforced gear | |
| CN106122436A | Antidetonation gear | |
| CN106151455A | Separable gear | |
| CN106122435A | Anti-slip type helical gear | |
| CN105240292A | Treading lifting type electric fan | |
| CN105231914A | Press type shelling device | |
| CN105239625A | Efficient excavator bucket |