Itsuo Takeuchi
32Patents
12h-index
35Co-inventors
81Inventor score
Filing activity: Nov 22, 1983 → Oct 2, 2013
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5602381A | Objects to be checked for authenticity, and method and apparatus for checking whether or not objects are authentic | Physics | 112 | Expired |
| US5300764A | Transparent optical identification label with infrared directivity | Performing Operations; Transporting | 98 | Expired |
| US5497227A | System for determining the authenticity of an object | Physics | 89 | Expired |
| US6301047A | System for optically identifying an object | Performing Operations; Transporting | 57 | Expired |
| US6061122A | Optical identification system using cholesteric liquid crystals | Physics | 53 | Expired |
| US5756220A | Object to be checked for authenticity and a method for manufacturing the same | Emerging Cross-Sectional Technologies | 51 | Expired |
| US6628439B2 | Genuineness detecting system and method for using genuineness detecting film | Physics | 50 | Expired |
| US5451759A | Using high-permeability magnetic elements randomly scattered in the objects | Physics | 43 | Expired |
| US5601931A | Object to be checked for authenticity and a method for manufacturing the same | Emerging Cross-Sectional Technologies | 42 | Expired |
| US5473147A | Method and an apparatus for checking objects to be checked for authenticity | Physics | 24 | Expired |
| US7201821B2 | Identifying medium and identifying method for object | Emerging Cross-Sectional Technologies | 13 | Expired |
| US6740431B2 | Medium for identifying matter to be identified and method for production thereof | Emerging Cross-Sectional Technologies | 13 | Expired |
| US8915437B2 | Identification medium, method for reading data therefrom, apparatus for identification, and method and apparatus for production thereof | Physics | 10 | Active |
| US8297522B2 | Multilayer reflector, authentication card, bar code label, authentication system, and authentication region forming system | Physics | 9 | Active |
| US7391546B2 | Discrimination medium and discrimination method using the same | Physics | 6 | Expired |
| US5707753A | Pulse generating element and a method and an apparatus for manufacturing the same | Emerging Cross-Sectional Technologies | 4 | Expired |
| US7388627B2 | Discrimination medium and article to be discriminated | Emerging Cross-Sectional Technologies | 4 | Expired |
| US7879415B2 | Discrimination medium and discrimination method therefor | Physics | 4 | Active |
| US7943392B2 | Discrimination medium, discrimination method, article to be discriminated, and discrimination apparatus | Performing Operations; Transporting | 3 | Expired |
| US8168080B2 | Identifying medium, identifying medium manufacturing method, article, and identifying medium identifying method | Chemistry; Metallurgy | 2 | Active |
| US8970953B2 | Identification medium and identification method therefor | Physics | 2 | Active |
| US9298036B2 | Identification medium | Physics | 1 | Active |
| US8322753B2 | Identification medium, identification method, and identification apparatus | Physics | 1 | Active |
| US4547372A | Method for brewing Sake | Chemistry; Metallurgy | 1 | Expired |
| US8652592B2 | Discrimination medium and discrimination method for discriminating the same | Emerging Cross-Sectional Technologies | 1 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.