| # | Country | Total Patents | |
|---|---|---|---|
| #1 | China | 14 |
| # | Industry | |
|---|---|---|
| #1 | Materials and metallurgy | |
| #2 | Machine tools | |
| #3 | Mechanical elements | |
| #4 | Surface technology and coating | |
| #5 | Environmental technology |
| # | Name | Total Patents |
|---|---|---|
| #1 | Yu Jinfang | 13 |
| #2 | Jinfang Yu | 1 |
| Publication | Filing date | Title |
|---|---|---|
| CN105906254A | Concrete pipe pile | |
| CN104863967A | Petroleum machinery bearing | |
| CN104846235A | High-wear-resistant generator shaft sleeve | |
| CN104862521A | Shaft sleeve with good lubricity | |
| CN102953995A | Compression pump with rotary rocker arm | |
| CN102828948A | Sliding rod rotation type compression pump | |
| CN1310299A | Double-wheel gear compressor pump | |
| CN1152072A | Rotary engine | |
| CN1084130A | Screw propeller |