| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 8 | |
| #2 | China | 4 |
| # | Industry | |
|---|---|---|
| #1 | Furniture and games | |
| #2 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Physical training equipment | |
| #2 | Unspecified technologies | |
| #3 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Lien Louis | 10 |
| #2 | Wu Annie | 3 |
| #3 | Harms Robert E | 1 |
| #4 | Byrd Rick | 1 |
| #5 | Segovia Eugene | 1 |
| #6 | Tanko Robert | 1 |
| #7 | Louis Lien | 1 |
| #8 | Zhong-Qi Lian | 1 |
| #9 | Phan Katy | 1 |
| Publication | Filing date | Title |
|---|---|---|
| CN103566527A | Barbell and manufacturing method thereof | |
| CN102649011A | Adjustable dumbbells | |
| CN101963180A | Lock nut with a double locking mechanism | |
| US2011021327A1 | Locknut secured dumbbell assembly | |
| US2006211547A1 | Weight plate for interlocking and weight adjustment | |
| US2007135271A1 | Weight plate | |
| US6746380B2 | Weight plate |