Koichi Matsuda
65Patents
23h-index
70Co-inventors
91Inventor score
Filing activity: Oct 5, 1984 → Apr 5, 2012
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5571749A | Method and apparatus for forming deposited film | Emerging Cross-Sectional Technologies | 162 | Expired |
| US6253167A | Client apparatus, image display controlling method, shared virtual space providing apparatus and method, and program providing medium | Human Necessities | 123 | Expired |
| US6493001B1 | Method, apparatus and medium for describing a virtual shared space using virtual reality modeling language | Physics | 111 | Expired |
| US6268872A | Client apparatus, image display controlling method, shared virtual space providing apparatus and method, and program providing medium | Electricity | 102 | Expired |
| US6346956B2 | Three-dimensional virtual reality space display processing apparatus, a three-dimensional virtual reality space display processing method, and an information providing medium | Physics | 83 | Expired |
| US5252142A | Pin junction photovoltaic element having an I-type semiconductor layer with a plurality of regions having different graded band gaps | Emerging Cross-Sectional Technologies | 76 | Expired |
| US6405249B1 | Information processing apparatus and method, information processing system and program providing medium | Electricity | 67 | Expired |
| US6704784B2 | Information processing apparatus and method, information processing system and program providing medium | Electricity | 66 | Expired |
| US6072117A | Photovoltaic device provided with an opaque substrate having a specific irregular surface structure | Emerging Cross-Sectional Technologies | 65 | Expired |
| US5259891A | Integrated type solar battery | Emerging Cross-Sectional Technologies | 57 | Expired |
| US6577328B2 | Program providing medium and shared virtual space providing apparatus and method | Human Necessities | 48 | Expired |
| US5401330A | Photovoltaic element | Emerging Cross-Sectional Technologies | 38 | Expired |
| US5279679A | Multi-layered photovoltaic element having at least three unit cells | Emerging Cross-Sectional Technologies | 36 | Expired |
| US6331672A | Photovoltaic cell and method for manufacturing the same | Emerging Cross-Sectional Technologies | 31 | Expired |
| US6292198A | Information processing apparatus, information processing method and information providing medium | Physics | 30 | Expired |
| US7007065B2 | Information processing apparatus and method, and storage medium | Electricity | 27 | Expired |
| US5007971A | Pin heterojunction photovoltaic elements with polycrystal BP(H,F) semiconductor film | Emerging Cross-Sectional Technologies | 26 | Expired |
| US5006180A | Pin heterojunction photovoltaic elements with polycrystal GaP (H,F) semiconductor film | Emerging Cross-Sectional Technologies | 26 | Expired |
| US7685518B2 | Information processing apparatus, method and medium using a virtual reality space | Physics | 26 | Expired |
| US6496207B1 | Collision detection apparatus and method for avatars in a three-dimensional virtual space | Human Necessities | 25 | Expired |
| US6609147B1 | Information processing apparatus, information processing method, and information providing medium | Human Necessities | 25 | Expired |
| US5024706A | Pin heterojunction photovoltaic elements with polycrystal AlP(H,F) semiconductor film | Emerging Cross-Sectional Technologies | 24 | Expired |
| US5002618A | Pin heterojunction photovoltaic elements with polycrystal BAs(H,F) semiconductor film | Emerging Cross-Sectional Technologies | 24 | Expired |
| US4635890A | Lock mechanism for adjustable seat | Performing Operations; Transporting | 22 | Expired |
| US6184456A | Photovoltaic device | Emerging Cross-Sectional Technologies | 22 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.