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Shoichi Takasuka

USPTO Granted Patents = 11

Average Co-Inventor Count = 4.7

ph-index = 4

Forward Citations = 73(Granted Patents)

Company Filing History:

11 out of 27,375

Matsushita Electric Industrial Co., Ltd.

Years Active: 2002-2006

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11 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 7139235 - Optical element with diffraction grating, semiconductor device, and optical information recording device employing the same (2006-11-21),

2. 7064898 - Optoelectronic device (2006-06-20),

3. 7035196 - Optical head device and optical recording and reproducing apparatus having lasers aligned in a tangential direction (2006-04-25),

4. 6947213 - Diffractive optical element that polarizes light and an optical pickup using the same (2005-09-20),

5. 6747939 - Semiconductor laser device and optical pickup device using the same (2004-06-08),

6. 6735024 - Optical pickup with improved optical properties (2004-05-11),

7. 6728035 - Optical device with diffraction grating having plural grating regions (2004-04-27),

8. 6728034 - Diffractive optical element that polarizes light and an optical pickup using the same (2004-04-27),

9. 6597642 - Photodetector unit, and optical pickup, optical reproduction apparatus, and optical recording apparatus equipped with the same (2003-07-22),

10. 6501601 - Optical device with diffraction grating having plural grating regions (2002-12-31),

11. 6473248 - Method for manufacturing an optical pickup (2002-10-29),

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