Issued Patents All Time
Showing 26–40 of 40 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5739517 | Apparatus and a method for checking an object to be checked for authenticity | Masumi Yoda, Minoru Komiya | 1998-04-14 |
| 5621515 | Identification system using regions of predetermined properties interspersed among regions of other properties | Kazuhiro Kitada | 1997-04-15 |
| 5601931 | Object to be checked for authenticity and a method for manufacturing the same | Itsuo Takeuchi, Masumi Yoda, Minoru Komiya, Tsugutaka Sugahara | 1997-02-11 |
| 5602381 | Objects to be checked for authenticity, and method and apparatus for checking whether or not objects are authentic | Itsuo Takeuchi, Masumi Yoda, Tatsuya Kurihara, Minoru Komiya | 1997-02-11 |
| 5594229 | Method and apparatus for checking the authenticity of a checking object by detecting magnetic flux reversals | Tatsuya Kurihara | 1997-01-14 |
| 5583333 | Checking objects including bistable magnetic devices, to be checked for authenticity | Tatsuya Kurihara | 1996-12-10 |
| 5497227 | System for determining the authenticity of an object | Itsuo Takeuchi, Mutumi Sasaki | 1996-03-05 |
| 5473147 | Method and an apparatus for checking objects to be checked for authenticity | Masumi Yoda, Itsuo Takeuchi, Tatsuya Kurihara | 1995-12-05 |
| 5451759 | Using high-permeability magnetic elements randomly scattered in the objects | Itsuo Takeuchi, Tatsuya Kurihara | 1995-09-19 |
| 5442433 | Identification system for an article having individually attached patches | Hidemi Haga, Tsugutaka Sugahara | 1995-08-15 |
| 5438403 | Article identification system | Hidemi Haga | 1995-08-01 |
| 5347111 | Authenticity identifying structure for an article | — | 1994-09-13 |
| 5300764 | Transparent optical identification label with infrared directivity | Itsuo Takeuchi | 1994-04-05 |
| 5126988 | Optical head structure | Hiroaki Nishiguma | 1992-06-30 |
| 4457622 | Screw inspection device | Michio Kato, Hayao Takahashi | 1984-07-03 |