Jun Oyama

This inventor holds 13 USPTO granted patents. Top assignees: Fuji Electric Co., Ltd., Fujitsu Corporation. Active years: 1988-2007.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Jun Oyama. Retrieved from https://idiyas.com/inventor/jun-oyama

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

USPTO Granted Patents = 13

% Patents Active = 84.6

Average Co-Inventor Count = 2.8

ph-index = 5

Forward Citations = 105(Granted Patents)

Location History:

Kanagawa, JP (1988 - 1993)
Saitama, JP (2000 - 2002)
Tokyo, JP (2003)
Kawasaki, JP (1996 - 2007)

Company Filing History:

10 out of 4,826

Fuji Electric Co., Ltd.

Years Active: 1988-2007

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13 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 7174167 - Code-division-multiple-access mobile communication system accommodating increased number of mobile stations (2007-02-06),

2. 6741859 - Code-division-multiple-access mobile communication system accomodating increased number of mobile stations (2004-05-25),

3. 6621403 - Overload tripping device for circuit breaker (2003-09-16),

4. 6400243 - Contact shoe device for circuit breaker (2002-06-04),

5. 6246301 - High-frequency circuit apparatus (2001-06-12),

6. 6150908 - Circuit breaker with metal melt isolation device (2000-11-21),

7. 5589672 - Circuit breaker with arc quenching device and vent (1996-12-31),

8. 5569894 - Circuit breaker arc quenching device with venting structure including (1996-10-29),

9. 5184100 - Circuit breaker (1993-02-02),

10. 5164560 - Repulsion type circuit breaker control device (1992-11-17),

11. 5023416 - Circuit breaker (1991-06-11),

12. 4884049 - Circuit breaker overcurrent tripping device (1989-11-28),

13. 4780579 - Circuit breaker (1988-10-25),

Title: Innovations of Jun Oyama in Mobile Communication Technology

Introduction

Jun Oyama is a notable inventor based in Kawasaki, Japan, recognized for his contributions to mobile communication technology. With a total of 13 patents to his name, Oyama has made significant advancements in the field, particularly in code-division multiple-access (CDMA) systems.

Latest Patents

One of Oyama's latest patents is a code-division-multiple-access mobile communication system that accommodates an increased number of mobile stations. This innovative system includes base stations that communicate with mobile stations using multiple radio frequencies covering respective cells. The system features a base-station controller that manages the communication between base stations and mobile stations, allowing for seamless transitions between cells through soft and hard hand-off operations. This design enhances the efficiency and reliability of mobile communications.

Career Highlights

Throughout his career, Jun Oyama has worked with prominent companies such as Fuji Electric Co., Ltd. and Fujitsu Corporation. His experience in these organizations has contributed to his expertise in mobile communication technologies and has facilitated his innovative work in the field.

Collaborations

Oyama has collaborated with notable colleagues, including Naoshi Uchida and Koji Asakawa, who have also contributed to advancements in technology.

Conclusion

Jun Oyama's work in mobile communication technology, particularly through his patents, has significantly impacted the industry. His innovative approaches continue to shape the future of mobile communications.

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]