| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Japan | 12 |
| # | Industry | |
|---|---|---|
| #1 | Materials and metallurgy | |
| #2 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Pipes | |
| #2 | Building materials |
| # | Name | Total Patents |
|---|---|---|
| #1 | Okuzawa Eiichi | 12 |
| Publication | Filing date | Title |
|---|---|---|
| JPH0938165A | Mat-shaped air massager | |
| JPS62113509A | Molding method by cam driving punch pressure system of carbon for machine | |
| JPS6081296A | Coating member with oron coating film | |
| JPS5289113A | Member having carbon coating for machines | |
| JPS5268096A | Manufacture of carbon for machines | |
| JPS5263915A | Sintered carbon gears | |
| JPS5230286A | Sintered carbon material impregnated with oil | |
| JPS5225982A | Buffer device |