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For the Inventor, By the Inventor

Kokubunji, Japan

Takao Kuroda

This inventor holds 20 USPTO granted patents, primarily in Semiconductor Devices. Top assignee: Hitachi, Ltd.. Active years: 1981-2003.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Takao Kuroda. Retrieved from https://idiyas.com/inventor/takao-kuroda-7w26x8ym

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

Calculating rank
USPTO Granted Patents = 20

% Patents Active = 100.0

Average Co-Inventor Count = 4.3

ph-index = 10

Forward Citations = 466(Granted Patents)


Location History:

  • Koganei, JP (1988 - 1989)
  • Tokyo, JP (1990)
  • Kokubunji, JP (1981 - 1998)
  • Tokorozawa, JP (2003)

Company Filing History:

goldMedal20 out of 42,752 
 
Hitachi, Ltd.
 patents

Years Active: 1981-2003

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Areas of Expertise:
Optical Processing
Semiconductor Laser
Heterojunction FET
Molecular Beam Epitaxy
Electron Gas Tunneling
InP Growth
Doubly-Doped Channel
Buried Heterojunction
Phase-Locked Laser
Rotary Substrate Holder
Semiconductor Member
Transistor Device
20 patents (USPTO):Explore Patents
1. 6639925 - Optical information processing equipment and semiconductor light emitting device suitable therefor (2003-10-28),
2. 6542526 - Optical information processor and semiconductor light emitting device suitable for the same (2003-04-01),
3. 5837565 - Semiconductor device (1998-11-17),
4. 5831296 - Semiconductor device (1998-11-03),
5. 4905057 - Semiconductor devices (1990-02-27),
6. 4835581 - Electron gas hole gas tunneling transistor device (1989-05-30),
7. 4819036 - Semiconductor device (1989-04-04),
8. 4814838 - Semiconductor device and method of manufacturing the same (1989-03-21),
9. 4766092 - Method of growing heteroepitaxial InP on Si using Sn substrate (1988-08-23),
10. 4673959 - Heterojunction FET with doubly-doped channel (1987-06-16),
11. 4672406 - Semiconductor member and semiconductor device employing the same (1987-06-09),
12. 4630279 - Buried heterojunction laser (1986-12-16),
13. 4580522 - Rotary substrate holder of molecular beam epitaxy apparatus (1986-04-08),
14. 4563764 - Semiconductor laser device (1986-01-07),
15. 4509173 - Phase-locked semiconductor laser device (1985-04-02),

Title: Innovative Contributions of Takao Kuroda in Optical Information Processing

Introduction: Takao Kuroda, a prominent inventor based in Kokubunji, Japan, has made significant strides in the fields of optical information processing and semiconductor technology. With a remarkable portfolio of 20 patents, Kuroda has laid the groundwork for advancements that cater to high-definition recording and reliable optical systems.

Latest Patents: Among Kuroda's latest contributions is the patent for an optical information processing equipment and a semiconductor light emitting device designed to enhance operational efficiency. His innovations focus on creating an information processor that offers high reliability and recording density, suitable for applications such as high-definition television. Notably, this technology incorporates a barrier layer in a quantum-well active layer of a semiconductor device, which is doped with high-density n-type impurities. Furthermore, by adjusting the face orientation of the quantum-well active layer, Kuroda’s device achieves a reduced threshold current density, demonstrating exemplary performance in gallium nitride-based compound semiconductor laser devices.

Career Highlights: Kuroda has built an impressive career at Hitachi, Ltd., where he has been instrumental in pioneering new technologies. His consistent dedication to research and development has placed him at the forefront of the semiconductor industry. His ability to innovate continues to inspire new advancements across various applications.

Collaborations: Throughout his career, Kuroda has collaborated with esteemed colleagues such as Takashi Kajimura and Jun-ichi Umeda. Their combined expertise and innovative spirit have fostered a collaborative environment that enhances the development of cutting-edge technology in their field.

Conclusion: Takao Kuroda represents the spirit of innovation within the realm of optical information processing and semiconductor technology. His patents not only reflect his technical expertise but also signify a significant advancement in the reliability and efficiency of optical devices. As innovations in this field continue to evolve, Kuroda's contributions will undoubtedly play a crucial role in shaping the future of technology.

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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