Hirotaka Kizuki

This inventor holds 21 USPTO granted patents, primarily in Semiconductor Devices. Top assignees: Mitsubishi Denki Kabushiki Kaisha, Sharp Kabushiki Kaisha Corporation. Active years: 1994-2007.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hirotaka Kizuki. Retrieved from https://idiyas.com/inventor/hirotaka-kizuki

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

USPTO Granted Patents = 21

% Patents Active = 95.2

Average Co-Inventor Count = 2.2

ph-index = 12

Forward Citations = 998(Granted Patents)

Location History:

Itami, JP (1994 - 2002)
Tokyo, JP (1998 - 2007)

Company Filing History:

21 out of 21,351

Mitsubishi Denki Kabushiki Kaisha

patents

1 out of 25,954

Sharp Kabushiki Kaisha Corporation

patents

where one patent can have more than one assignee

Years Active: 1994-2007

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Areas of Expertise:

High Frequency Switch

GaInNAs Layer

Semiconductor Laser

Quantum Wire Structure

High Electron Mobility Transistor

MOCVD Substrate Holder

Infrared Detector

Graded Collector Barrier

Quantum Wells

Carbon-Doped Semiconductor

Laser Diode Array

Optical Device

21 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 7307490 - High frequency switch device (2007-12-11),

2. 6506618 - Method of forming a GaInNAs layer (2003-01-14),

3. 6358316 - Method for producing semiconductor device, method for producing semiconductor laser device, and method for producing quantum wire structure (2002-03-19),

4. 6096617 - Method of manufacturing a carbon-doped compound semiconductor layer (2000-08-01),

5. 5991322 - Semiconductor optical device (1999-11-23),

6. 5948161 - Method of fabricating a semiconductor device and method of cleaning a (1999-09-07),

7. 5882952 - Semiconductor device including quantum wells or quantum wires and method (1999-03-16),

8. 5835516 - Semiconductor laser device and method of fabricating semiconductor laser (1998-11-10),

9. 5805628 - Semiconductor laser (1998-09-08),

10. 5796127 - High electron mobility transistor (1998-08-18),

11. 5782979 - Substrate holder for MOCVD (1998-07-21),

12. 5714006 - Method of growing compound semiconductor layer (1998-02-03),

13. 5679962 - Semiconductor device and a single electron device (1997-10-21),

14. 5608749 - Semiconductor laser diode and semiconductor laser diode array including (1997-03-04),

15. 5602414 - Infrared detector having active regions and isolating regions formed of (1997-02-11),

Title: Hirotaka Kizuki: A Pioneer in High Frequency Switch Devices and GaInNAs Layer Formation

Introduction

Hirotaka Kizuki, based in Itami, Japan, is an accomplished inventor with a remarkable portfolio of 21 patents. His contributions to the fields of electronics and semiconductor technology have marked him as a significant figure in innovation.

Latest Patents

Among Kizuki's latest innovations is a high frequency switch device that employs multiple Single-Pole Double-Throw (SPDT) switches, enhancing switching capabilities in electronic applications. The device features SPDT(A), SPDT(B), and SPDT(C) switches, where specific ports are grounded through terminating resistors, resulting in improved performance and efficiency.

Another noteworthy patent is related to the method of forming a GaInNAs layer, crucial for advanced semiconductor devices. This process involves the formation of an undoped GaAs layer on a GaAs substrate, followed by the adhesion of thallium, enabling the epitaxial growth of GaInNAs through chemical vapor deposition. These innovations showcase Kizuki's commitment to advancing technology in significant ways.

Career Highlights

Kizuki has held pivotal positions in industry-leading companies, including Mitsubishi Electric Corporation and Sharp Corporation. His work at these prestigious institutions has contributed to the development of cutting-edge technologies and applications in electronics.

Collaborations

Throughout his career, Kizuki has collaborated with notable professionals in his field, including Norio Hayafuji and Nobuaki Kaneno. These collaborations have facilitated the exchange of ideas and innovations, further enhancing the impact of Kizuki's work.

Conclusion

Hirotaka Kizuki stands out as a visionary inventor whose patents and innovations in high frequency switch devices and GaInNAs layer formation are shaping the future of electronics. His contributions not only reflect his expertise but also his dedication to pushing the boundaries 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]