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For the Inventor, By the Inventor

Shizuoka-ken, Japan

Hiroshi Ohsawa

USPTO Granted Patents = 15

 

Average Co-Inventor Count = 1.3

ph-index = 5

Forward Citations = 70(Granted Patents)


Location History:

  • Hamamatsu, JP (2008 - 2011)
  • Shizuoka-ken, JP (1999 - 2013)
  • Shizuoka, JP (1993 - 2014)

Company Filing History:

goldMedal13 out of 1,421 
 
Suzuki Motor Corporation
 patents
silverMedal2 out of 507 
 
Clariant Finance (Bvi) Limited
 patents

Years Active: 1993-2014

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15 patents (USPTO):Explore Patents
1. 8863706 - Four-stroke cycle engine (2014-10-21),
2. 8601989 - Variable valve gear for internal combustion engine (2013-12-10),
3. 8047176 - Balancer apparatus for an engine (2011-11-01),
4. 7905212 - Balancer apparatus of engine (2011-03-15),
5. 7434560 - Balancing device for an engine (2008-10-14),
6. 6915768 - Variable operating valve apparatus for an internal combustion engine (2005-07-12),
7. 6718934 - Balancer structure for a V-type engine (2004-04-13),
8. 6706863 - Organic pigment with high transparency and hydrophobicity (2004-03-16),
9. 6607048 - Motor assisting apparatus for vehicle (2003-08-19),
10. 6424126 - Propulsion system of a vehicle having two flywheels with different moments of inertia (2002-07-23),
11. 6384120 - Synthetic resin film for agricultural use excellent in antifog and antimist properties (2002-05-07),
12. 6373155 - Propulsion unit of vehicle (2002-04-16),
13. 6311495 - Composite power unit (2001-11-06),
14. 5957104 - Cylinder head structure of an internal combustion engine (1999-09-28),
15. 5216986 - V-engine construction (1993-06-08),

Title: Hiroshi Ohsawa: Innovator in Engine Technology

Introduction

Hiroshi Ohsawa is a notable inventor based in Shizuoka-ken, Japan. He has made significant contributions to the field of engine technology, holding a total of 15 patents. His innovative designs focus on improving the efficiency and functionality of internal combustion engines.

Latest Patents

Among his latest patents is a groundbreaking four-stroke cycle engine. This invention features output pistons for opening intake valves, an intake cam coaxial with a crankshaft to actuate an input piston, and a hydraulic control valve. The design includes output passageways connecting the output pistons to the hydraulic control valve, as well as an input passageway connecting an input hydraulic chamber to the hydraulic control valve. The hydraulic control valve operates in two states, enabling pressure-transmission communication between the input and output passageways during the reciprocating motion of the input piston. Another significant patent is the variable valve gear for internal combustion engines. This invention includes control shafts with bodies and control arm parts that are rotatably provided on the outer peripheral surface of a drive camshaft. The design allows for enhanced control and efficiency in engine operation.

Career Highlights

Hiroshi Ohsawa has worked with prominent companies such as Suzuki Motor Corporation and Clariant Finance. His experience in these organizations has contributed to his expertise in engine technology and innovation.

Collaborations

Throughout his career, Ohsawa has collaborated with talented individuals, including Michinori Shimizu and Kazuhiko Morimoto. These partnerships have fostered a creative environment that has led to the development of his innovative patents.

Conclusion

Hiroshi Ohsawa's contributions to engine technology through his patents and collaborations highlight his role as a significant inventor in the field. His work continues to influence advancements in internal combustion engines, showcasing the importance of innovation in engineering.

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