| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 6 | |
| #2 | Canada | 4 | |
| #3 | WIPO (World Intellectual Property Organization) | 3 |
| # | Industry | |
|---|---|---|
| #1 | Furniture and games | |
| #2 | Machines | |
| #3 | Civil engineering | |
| #4 | Mechanical elements | |
| #5 | Consumer goods |
| # | Technology | |
|---|---|---|
| #1 | Office furniture | |
| #2 | Ladders | |
| #3 | Certain plastics | |
| #4 | Chairs and beds | |
| #5 | Shaping of plastics | |
| #6 | Fillers | |
| #7 | Nails | |
| #8 | Household appliances | |
| #9 | Indexing scheme relating to hinges | |
| #10 | Hand carried bags |
| # | Name | Total Patents |
|---|---|---|
| #1 | Leng Luhao | 13 |
| Publication | Filing date | Title |
|---|---|---|
| US2020263497A1 | Folding ladder and top tray thereof | |
| US2020263473A1 | Storage cabinet | |
| US2020260896A1 | Mailbox for storing packages | |
| WO2017190615A1 | Telescopic ladder | |
| US2017260809A1 | Stretchable ladder | |
| WO2017045579A1 | Hollow desk panel | |
| US2016135589A1 | Lifting desk | |
| CA2951187A1 | A bunk bed frame | |
| CA2878573A1 | A folding sofa bed |