Kanagawa, Japan

Hiraku Ohnuma

This inventor holds 1 USPTO granted patent. Top assignee: Baldwin-Japan Ltd.. Active years: 1987.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hiraku Ohnuma. Retrieved from https://idiyas.com/inventor/hiraku-ohnuma

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


% Patents Active = 100.0

Average Co-Inventor Count = 3.0

ph-index = 1

Forward Citations = 2(Granted Patents)


Company Filing History:


Years Active: 1987

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1 patent (USPTO):Explore Patents

Title: Hiraku Ohnuma - Innovator in Filter Device Technology

Introduction

Hiraku Ohnuma is a notable inventor based in Kanagawa, Japan. He has made significant contributions to the field of filtration technology, particularly in applications related to offset printing. His innovative approach has led to the development of a unique filter device that enhances the cleaning process of dampening water used in offset presses.

Latest Patents

Hiraku Ohnuma holds a patent for a filter device designed to clean dampening water utilized in offset printing. The device features a tank divided into three sections: a stirring tank section, a floating tank section, and a discharging tank section. The design includes a passage that connects the floating tank section and the discharging tank section, which can be selectively closed by a shut-off device controlled by a timer. This innovative mechanism allows for efficient removal of contaminants from the water, ensuring that only clean water is recirculated back to the offset press.

Career Highlights

Ohnuma's career is marked by his dedication to improving industrial processes through innovative inventions. His work at Baldwin-Japan Ltd. has positioned him as a key player in the development of advanced filtration systems. His patent reflects his commitment to enhancing the efficiency and effectiveness of offset printing operations.

Collaborations

Hiraku Ohnuma has collaborated with notable colleagues, including Akira Hara and Toshisaburo Takagi. These partnerships have fostered a creative environment that encourages the exchange of ideas and the development of cutting-edge technologies.

Conclusion

Hiraku Ohnuma's contributions to filter device technology exemplify the impact of innovation in industrial applications. His patented device not only improves the quality of dampening water used in offset printing but also showcases the importance of effective collaboration in the field of invention.

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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