| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Japan | 18 |
| # | Industry | |
|---|---|---|
| #1 | Environmental technology | |
| #2 | Furniture and games |
| # | Technology | |
|---|---|---|
| #1 | Climate change adaptation technologies | |
| #2 | Sanitary equipment |
| # | Name | Total Patents |
|---|---|---|
| #1 | Sumiya Katsuyoshi | 17 |
| #2 | Sumiya Katsuji | 1 |
| Publication | Filing date | Title |
|---|---|---|
| JP2001161615A | Cleaning tool | |
| JP2001163108A | Container | |
| JP2001149265A | Portable toilet | |
| JP2000333878A | Handle for toilet bowl | |
| JP2000335293A | Mat for automobile | |
| JP2000325260A | Water stopper for toilet bowl | |
| JP2000335303A | Container rest | |
| JP2000326726A | Sunshade tool | |
| JP2000184991A | Brush with handle | |
| JP2000152821A | Swing cleaner | |
| JP2000159056A | Seat belt auxiliary tool | |
| JP2000152903A | Cleaner and manufacture thereof | |
| JP2000152906A | Bathroom brush | |
| JP2000153985A | Hook | |
| JP2000070106A | Mat | |
| JP2000051053A | Stairs mat | |
| JPH11348633A | Mounting table and suspending fixture | |
| JPH11192188A | Portable stool made of synthetic resin |