| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Republic of Korea | 6 | |
| #2 | United States | 2 | |
| #3 | WIPO (World Intellectual Property Organization) | 2 | |
| #4 | China | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Engines, pumps and turbines | |
| #3 | Electrical machinery and energy | |
| #4 | Machines | |
| #5 | Transport |
| # | Technology | |
|---|---|---|
| #1 | Lubricating | |
| #2 | Pipes | |
| #3 | Venting or aerating devices | |
| #4 | Lubricating of machines | |
| #5 | Vehicle brake control systems | |
| #6 | Electric switches | |
| #7 | Cylinders for combustion engines | |
| #8 | Shaping of plastics |
| # | Name | Total Patents |
|---|---|---|
| #1 | Kim Chang Sun | 8 |
| #2 | Kim Changsun | 2 |
| #3 | Kim Chang-Sun | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2021060842A1 | Lubricant pump device and method of operating the same | |
| KR102148794B1 | Pump device for lubrication oil and method for operating the same | |
| KR101928880B1 | Pump device for lubrication oil | |
| KR101165945B1 | Oil pressure switch | |
| KR101173616B1 | One-touch nipple | |
| KR101158837B1 | Oil pump | |
| KR20100060195A | Metering valve |