| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Japan | 12 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Springs | |
| #2 | Swimming pools |
| # | Name | Total Patents |
|---|---|---|
| #1 | Kawamata Shigeya | 11 |
| #2 | Ito Masakazu | 1 |
| #3 | Kobayashi Hiromitsu | 1 |
| #4 | Narita Takayuki | 1 |
| Publication | Filing date | Title |
|---|---|---|
| JP2001227574A | Liquid damper | |
| JPH1163095A | Liquid damper | |
| JPH09229121A | Liquid damper | |
| JPH07301023A | Damping structure | |
| JPH05239953A | Through layers vibration control structural body | |
| JPH0478345A | Breakage prevention device for laminated rubber supporter | |
| JPH02146329A | Fluid damper | |
| JPS6415544A | Liquid type mass damper | |
| JPS62206175A | Precast concrete earthquake resistant element | |
| JPS61215823A | Structure resonance preventive device | |
| JPS5833664A | Precast concrete truss earthquake- proof element | |
| JPS5237675A | Buffer material with liquid holes |