| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 8 | |
| #2 | Canada | 3 | |
| #3 | Australia | 1 | |
| #4 | WIPO (World Intellectual Property Organization) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Consumer goods | |
| #2 | Furniture and games | |
| #3 | Machine tools | |
| #4 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Protective garments | |
| #2 | Physical training equipment | |
| #3 | Hand-held cutting tools | |
| #4 | Finishing work on buildings | |
| #5 | Chairs and beds |
| # | Name | Total Patents |
|---|---|---|
| #1 | Richards Lee E | 13 |
| Publication | Filing date | Title |
|---|---|---|
| US2018263307A1 | Knee Pad Device | |
| US2016121494A1 | Adjustable wall trimming device | |
| US2014182040A1 | Knee pad support frame | |
| US8561311B1 | Apparatus for measuring and cutting treads | |
| US2008168589A1 | Knee pad | |
| US4876745A | Knee pads | |
| US4772071A | Knee pads |