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For the Inventor, By the Inventor

Tendo, Japan

Fumio Murayama

USPTO Granted Patents = 14

Average Co-Inventor Count = 2.0

ph-index = 7

Forward Citations = 183(Granted Patents)


Location History:

  • Tendou, JP (1990)
  • Yamagata, JP (1984 - 1994)
  • Yamagata-ken, JP (1998 - 2000)
  • Tendo, JP (1989 - 2004)

Company Filing History:

goldMedal10 out of 2,861 
 
Pioneer Electronic Corporation
 patents
silverMedal2 out of 27 
 
Tohoku Pioneer Electronic Corporation
 patents
bronzeMedal1 out of 30 
 
Pioneer Electronics Corporation
 patents
4. 1 out of 1 
 
Tohoku Pioneer Electronics Corporation
 patent
5. 3 out of 832,680 
Other
 patents
where one patent can have more than one assignee

Years Active: 1984-2004

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14 patents (USPTO):Explore Patents
1. 6817084 - Method for manufacturing a speaker apparatus (2004-11-16),
2. 6665414 - Speaker system and cooling device therefor (2003-12-16),
3. 6343136 - Speaker apparatus and manufacturing method thereof (2002-01-29),
4. 6030561 - Methods for making a loudspeaker vibrating diaphragm (2000-02-29),
5. 5822444 - Loudspeaker (1998-10-13),
6. 5793002 - Loudspeaker vibrating diaphragm and methods for its production (1998-08-11),
7. 5297212 - Loudspeaker system installed on an automobile door and including a (1994-03-22),
8. 5008945 - Water-proof speaker unit (1991-04-16),
9. 4965837 - Environmentally resistant loudspeaker (1990-10-23),
10. 4953220 - Mobile speaker system having an illumination effect (1990-08-28),
11. 4924965 - Speaker system (1990-05-15),
12. 4837835 - Speaker system for motor vehicles with an alarm device (1989-06-06),
13. 4821331 - Coaxial speaker unit (1989-04-11),
14. 4451928 - Multi-speaker system for use in automobiles (1984-05-29),

Title: Fumio Murayama: Innovator in Speaker Technology

Introduction

Fumio Murayama is a notable inventor based in Tendo, Japan. He has made significant contributions to the field of audio technology, particularly in speaker apparatus design. With a total of 14 patents to his name, Murayama's innovations have advanced the efficiency and performance of speaker systems.

Latest Patents

One of Murayama's latest patents is a method for manufacturing a speaker apparatus. This method involves fixing a magnetic circuit to a frame, positioning a coil with respect to a center pole of the magnetic circuit, and connecting a damper to the coil and the frame. Additionally, it includes the use of a jig to ensure the diaphragm is positioned accurately during installation. Another significant patent is for a speaker system and a cooling device designed to effectively dissipate heat generated by a voice coil. This cooling device features a unique design that enhances heat dissipation, ensuring optimal performance of the speaker system.

Career Highlights

Throughout his career, Fumio Murayama has worked with prominent companies, including Pioneer Electronic Corporation. His work has been instrumental in developing innovative audio technologies that have set new standards in the industry.

Collaborations

Murayama has collaborated with talented individuals such as Takeshi Tokusho and Takashi Suzuki. These partnerships have contributed to the successful development of his patented technologies.

Conclusion

Fumio Murayama's contributions to speaker technology through his innovative patents have significantly impacted the audio industry. His work continues to inspire advancements in sound engineering and design.

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