Junji Hirooka

This inventor holds 25 USPTO granted patents, primarily in Vehicular Communication. Top assignee: Oki Electric Industry Co., Ltd.. Active years: 1981-1983.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Junji Hirooka. Retrieved from https://idiyas.com/inventor/junji-hirooka

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

Calculating rank

USPTO Granted Patents = 25

% Patents Active = 100.0

Average Co-Inventor Count = 2.1

ph-index = 12

Forward Citations = 254(Granted Patents)

Company Filing History:

25 out of 4,980

Oki Electric Industry Co., Ltd.

patents

Years Active: 1981-1983

Loading Chart...

Areas of Expertise:

Telephone Set

Car Telephone Set

Portable Wireless Telephone

Transceiver

Dialing Pad

Vehicular Communication

Microphone

Remote Dialing

Radio Receiver

25 patents (USPTO):Sort by Forward CitationsExplore Patents

1. D270248 - Telephone set (1983-08-23),

2. D267872 - Car telephone set (1983-02-08),

3. D267318 - Portable wireless telephone set (1982-12-21),

4. D267317 - Telephone set (1982-12-21),

5. D267316 - Car telephone set (1982-12-21),

6. D267249 - Transceiver for a car telephone set (1982-12-14),

7. D266845 - Dialing pad for a car telephone set (1982-11-09),

8. D266506 - Vehicular telephone set of similar article (1982-10-12),

9. D265735 - Dialing pad for a car telephone set (1982-08-10),

10. D265733 - Telephone set (1982-08-10),

11. D265730 - Dialing pad (1982-08-10),

12. D265648 - Dialing pad for a car telephone set (1982-08-03),

13. D265402 - Transceiver for a car telephone set (1982-07-13),

14. D264078 - Portable wireless telephone set (1982-04-27),

15. D264077 - Telephone set (1982-04-27),

Title: The Innovative Mind of Junji Hirooka in Telecommunications

Introduction: Junji Hirooka is a prominent inventor based in Tokyo, Japan, known for his significant contributions to the field of telecommunications. With an impressive portfolio of 25 patents, Hirooka has played a pivotal role in advancing innovative technologies that enhance communication.

Latest Patents: Among his latest inventions are a Telephone Set and a Car Telephone Set, showcasing his commitment to improving communication devices for both personal and automotive use. These patents reflect his dedication to pushing the boundaries of technology in the telecommunications sector.

Career Highlights: Hirooka works at Oki Electric Industry Co., Ltd., a leading company in the development of telecommunications equipment and systems. His tenure at the company has been marked by numerous innovations that have not only benefitted the organization but also contributed to the broader industry.

Collaborations: Throughout his career, Junji Hirooka has collaborated with talented professionals such as Hisao Fukushima and Kimpei Yamauchi. These collaborations have fostered an environment of creativity and innovation, allowing them to combine their expertise and drive forward impactful inventions.

Conclusion: Junji Hirooka's contributions to telecommunications through his 25 patents demonstrate his innovative spirit and dedication to advancing communication technologies. His work at Oki Electric Industry Co., Ltd. and collaborations with esteemed colleagues further solidify his status as a notable inventor in the industry.

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]