Steven Ryutaro Takayama
57Patents
21h-index
81Co-inventors
91Inventor score
Filing activity: Apr 24, 1998 → Mar 1, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| USD858481S1 | Headphones | General | 102 | Active |
| USD872049S1 | Headphones | General | 78 | Active |
| USD427985S | Telephone base unit | General | 75 | Expired |
| USD706743S1 | Speaker housing | General | 68 | Active |
| USD871368S1 | Headphones | General | 65 | Active |
| US6647652B1 | Display board system | Physics | 64 | Expired |
| USD857655S1 | Headphones | General | 63 | Active |
| USD723514S1 | Speaker | General | 54 | Active |
| USD851062S1 | Headphones | General | 48 | Active |
| USD486806S1 | Wireless communications device | General | 43 | Expired |
| US7325343B2 | Display board system | Physics | 43 | Expired |
| USD472227S1 | Telephone base unit | General | 39 | Expired |
| US6272779A | Display board system | Physics | 36 | Expired |
| USD434918S | Chair | General | 36 | Expired |
| US6263602A | Display board system | Physics | 36 | Expired |
| US6445793B1 | Adjustable telephone system and method | Electricity | 32 | Expired |
| USD486807S1 | Wireless communications device | General | 30 | Expired |
| US6619753B2 | Car seat having buckle with visual feedback | Emerging Cross-Sectional Technologies | 28 | Expired |
| USD788070S1 | Speaker housing | General | 27 | Active |
| US6941691B2 | Display board system | Physics | 22 | Expired |
| USD913990S1 | Headphones | General | 22 | Active |
| USD420538S | Chair | General | 21 | Expired |
| USD428000S | Telephone extension module | General | 21 | Expired |
| USD778875S1 | Speaker | General | 20 | Active |
| US7137581B2 | Methods and apparatus for an improved rotary grater | Human Necessities | 19 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.