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For the Inventor, By the Inventor

Kyoto, Japan

Toshihiko Takakura

This inventor holds 24 USPTO granted patents, primarily in Image Processing Technology. Top assignee: Rohm Co., Ltd.. Active years: 1996-2007.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Toshihiko Takakura. Retrieved from https://idiyas.com/inventor/toshihiko-takakura

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

USPTO Granted Patents = 24

% Patents Active = 62.5

Average Co-Inventor Count = 2.8

ph-index = 9

Forward Citations = 263(Granted Patents)


Company Filing History:

goldMedal24 out of 6,021 
 
Rohm Co., Ltd.
 patents

Years Active: 1996-2007

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Areas of Expertise:
Optical Printhead
Image Processing Apparatus
Liquid Crystal Shutter
Image Reading Unit
Lens Array Unit
Image Scanner
Thermal Printhead
Integrated Image Head
Image Sensor
Image Read/Write Head
Display Device
Image Forming
24 patents (USPTO):Explore Patents
1. 7173644 - Optical printhead and image forming apparatus (2007-02-06),
2. 7170569 - Liquid crystal shutter and printhead (2007-01-30),
3. 7156569 - Wall-mounting image processing apparatus (2007-01-02),
4. 6952289 - Integrated image reading/writing head, and image processing apparatus incorporating the same (2005-10-04),
5. 6952273 - Image processing apparatus having an image reading unit and a printing unit on one side of a substrate (2005-10-04),
6. 6864999 - Integrated image-reading/writing head and image processing apparatus incorporating the same (2005-03-08),
7. 6825865 - Printhead with liquid crystal shutter (2004-11-30),
8. 6798479 - Liquid crystal display device and process for making the same (2004-09-28),
9. 6707613 - Lens array unit and method of forming image (2004-03-16),
10. 6693748 - Lens array unit, method of manufacturing lens array unit, and optical device using the lens array unit (2004-02-17),
11. 6496285 - Image reading apparatus (2002-12-17),
12. 6473206 - Image scanner (2002-10-29),
13. 6449099 - Lens array and lens array assembly (2002-09-10),
14. 6448995 - Image read/write head, and image processing apparatus incorporating the same (2002-09-10),
15. 6376822 - Image reading apparatus (2002-04-23),

Title: **Toshihiko Takakura: Innovator in Optical Technologies**

Introduction

Toshihiko Takakura, based in Kyoto, Japan, is a prominent inventor renowned for his contributions to optical technology. With a remarkable portfolio of 24 patents, he continues to push the boundaries of innovation in imaging and printing technologies.

Latest Patents

Takakura's latest patents illustrate his expertise in optical systems. One significant invention is the **Optical Printhead and Image Forming Apparatus**. This innovation features a sophisticated optical printhead that comprises a light source, a light guide, and a light collecting sheet. The design is meticulously crafted, with the light guide having a light incident surface facing the light source and a flat light emitting surface extending in the primary scanning direction. The light collecting sheet, which interacts with the light emitting surface of the light guide, incorporates a prism layer composed of multiple parallel ridges, enabling the diffused light rays to emerge as parallel rays.

Another notable invention is the **Liquid Crystal Shutter and Printhead**. This technology revolves around a liquid crystal shutter that consists of two transparent substrates arranged face-to-face. A light shielding film on one substrate restricts incoming light, and transparent electrodes laminated over this film enable precise control. Each component, including the insulating layer, is crafted from inorganic materials, showcasing Takakura's commitment to durability and efficiency.

Career Highlights

Throughout his career, Takakura has been instrumental in advancing optical technology. His extensive experience and innovative spirit have allowed him to make significant contributions to the field, particularly while working at Rohm Co., Ltd. This company is known for its dynamic approach to semiconductor and electronic components.

Collaborations

Takakura’s journey has also been marked by impactful collaborations with fellow innovators in the field. Notable colleagues include Hisayoshi Fujimoto and Norihiro Imamura, with whom he shares a common goal of advancing technology through creative solutions and teamwork.

Conclusion

Toshihiko Takakura exemplifies the innovative spirit that drives progress in optical technologies. With a robust patent portfolio and a commitment to research and development at Rohm Co., Ltd., his work continues to influence the industry. As he explores new frontiers in optical devices, Takakura remains a key figure to watch in the realm of technological advancements.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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