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For the Inventor, By the Inventor

Hamamatsu, Japan

Junichi Hasegawa

This inventor holds 6 USPTO granted patents. Top assignee: Sanshin Kogyo Kabushiki Kaisha. Active years: 1989-2001.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Junichi Hasegawa. Retrieved from https://idiyas.com/inventor/junichi-hasegawa-e49gu3eu

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

USPTO Granted Patents = 6

% Patents Active = 100.0

Average Co-Inventor Count = 2.9

ph-index = 5

Forward Citations = 51(Granted Patents)


Location History:

  • Hamamatsu, JP (1989 - 1997)
  • Shizuoka, JP (2001)

Company Filing History:

goldMedal6 out of 1,061 
 
Sanshin Kogyo Kabushiki Kaisha
 patents

Years Active: 1989-2001

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6 patents (USPTO):Explore Patents
1. 6283809 - Outboard motor exhaust system (2001-09-04),
2. 5595515 - Outboard motor exhaust system (1997-01-21),
3. 5438962 - Water cooled engine (1995-08-08),
4. 5150673 - Fuel supplying device for marine propulsion engine (1992-09-29),
5. 4917053 - Fuel supplying system for plural-cylinder internal combustion engine (1990-04-17),
6. 4872858 - Outboard jet propulsion device (1989-10-10),

Title: Innovations by Junichi Hasegawa

Introduction

Junichi Hasegawa is a notable inventor based in Hamamatsu, Japan. He has made significant contributions to the field of outboard motor technology, holding a total of 6 patents. His work focuses on improving the efficiency and cost-effectiveness of exhaust systems in outboard motors.

Latest Patents

Hasegawa's latest patents include an innovative outboard motor exhaust system designed to enhance performance while reducing costs. One of his patents describes an exhaust system that features an improved construction for providing an expansion chamber of an idle exhaust discharge. This system includes an engine surrounded by a protective cowling, which consists of top and bottom cowling members. The expansion chamber is defined by the bottom surface of the bottom cowling member and a separable member. Another patent outlines a simplified above-the-water exhaust gas discharge formed by an inverted U-shaped tube. This design allows for a detachable connection to the outer casing of the driveshaft housing, eliminating the need for special passages for exhaust gas flow.

Career Highlights

Hasegawa is currently employed at Sanshin Kogyo Kabushiki Kaisha, where he continues to innovate in the field of outboard motors. His work has been instrumental in advancing the technology used in marine engines, contributing to both performance and environmental sustainability.

Collaborations

Some of Hasegawa's notable coworkers include Masaki Okazaki and Yoshibumi Iwata. Their collaborative efforts have further enhanced the development of innovative solutions in the outboard motor industry.

Conclusion

Junichi Hasegawa's contributions to outboard motor technology exemplify the impact of innovation in engineering. His patents reflect a commitment to improving efficiency and reducing costs in marine 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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