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For the Inventor, By the Inventor

Hamamatsu, Japan

Hiroshi Oishi

This inventor holds 16 USPTO granted patents, primarily in Marine Propulsion Systems. Top assignees: Sanshin Kogyo Kabushiki Kaisha, Sanshin Industries Co., Ltd., Yamaha Motor Company Ltd. Active years: 1989-2002.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hiroshi Oishi. Retrieved from https://idiyas.com/inventor/hiroshi-oishi-8p8mlmak

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

Calculating rank
USPTO Granted Patents = 16

% Patents Active = 100.0

Average Co-Inventor Count = 1.5

ph-index = 8

Forward Citations = 148(Granted Patents)


Location History:

  • Hamamatsu, JP (1989 - 2001)
  • Shizuoka, JP (2002)

Company Filing History:

goldMedal14 out of 1,061 
 
Sanshin Kogyo Kabushiki Kaisha
 patents
silverMedal1 out of 17 
 
Sanshin Industries Co., Ltd.
 patents
bronzeMedal1 out of 47 
 
Yamaha Motor Company Ltd
 patents

Years Active: 1989-2002

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Areas of Expertise:
Engine Layout
Cooling System
Lubricating System
Throttle Control
Crankcase Ventilation
Exhaust Manifold
Cowling Structure
Ignition Timing
Clutch Design
Liquid Cooling
Bearing Arrangement
Outboard Motor
16 patents (USPTO):Explore Patents
1. 6394057 - Arrangement of components for engine (2002-05-28),
2. 6286476 - Engine lubricating system (2001-09-11),
3. 6276327 - Engine layout for outboard motor (2001-08-21),
4. 6082343 - Crankcase ventilation system (2000-07-04),
5. 6076495 - Bearing arrangement for vertical engine (2000-06-20),
6. 5997371 - Choke control for outboard motor engine (1999-12-07),
7. 5950425 - Exhaust manifold cooling (1999-09-14),
8. 5876256 - Engine cooling system (1999-03-02),
9. 5823835 - Outboard motor throttle control (1998-10-20),
10. 5769038 - Liquid cooling system for engine (1998-06-23),
11. 5328395 - Cowling structure for marine propulsion engine (1994-07-12),
12. 5302147 - Cowling assembly for a marine propulsion engine (1994-04-12),
13. 5263884 - Latch for a cowling of an outboard engine (1993-11-23),
14. 4986239 - Ignition timing controller for internal combustion engine (1991-01-22),
15. 4925416 - Clutch for marine propulsion (1990-05-15),

Title: Innovations of Hiroshi Oishi

Introduction

Hiroshi Oishi is a notable inventor based in Hamamatsu, Japan. He has made significant contributions to the field of engineering, particularly in engine design and lubrication systems. With a total of 16 patents to his name, Oishi's work reflects a commitment to innovation and improvement in automotive technology.

Latest Patents

Oishi's latest patents include an arrangement of components for an engine and a lubricating system for a vertically oriented crankshaft. The arrangement of components for an engine features an improved construction that includes an exhaust system with an exhaust manifold extending along a cylinder body. This design allows for part of the air induction system to overlap with the exhaust manifold, optimizing engine performance. Additionally, the cooling system incorporates at least two coolant passages, with a mechanism to control coolant flow based on temperature. The lubricating system patent describes a setup where the crankshaft rotates within a crankcase chamber, with strategically placed support members and oil flow passages to ensure effective lubrication of the bearings.

Career Highlights

Throughout his career, Hiroshi Oishi has worked with prominent companies such as Sanshin Kogyo and Sanshin Industries. His experience in these organizations has allowed him to refine his skills and contribute to various innovative projects in engine technology.

Collaborations

Oishi has collaborated with notable coworkers, including Masanori Takahashi and Yoshihito Fukuoka. Their combined expertise has likely fostered a creative environment that encourages the development of groundbreaking inventions.

Conclusion

Hiroshi Oishi's contributions to engine design and lubrication systems demonstrate his innovative spirit and dedication to advancing automotive technology. His patents reflect a deep understanding of engineering principles and a commitment to improving performance and efficiency in engines.

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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