Nobeokashi, Japan

Isao Hirashita

This inventor holds 1 USPTO granted patent. Top assignee: Asahi Kasei Kogyo Kabushiki Kaisha. Active years: 1976.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Isao Hirashita. Retrieved from https://idiyas.com/inventor/isao-hirashita

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

Calculating rank

% Patents Active = 100.0

Average Co-Inventor Count = 6.0

ph-index = 1

Forward Citations = 6(Granted Patents)


Company Filing History:


Years Active: 1976

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1 patent (USPTO):Explore Patents

Title: Isao Hirashita: Innovator in Gas Purification Technology

Introduction

Isao Hirashita is a notable inventor based in Nobeokashi, Japan. He has made significant contributions to the field of environmental technology, particularly in the purification of hydrogen sulfide-containing gases. His innovative approach addresses critical environmental pollution issues.

Latest Patents

Hirashita holds a patent for a method designed to purify hydrogen sulfide-containing gas. This method involves a two-step process. In the first step, the gases are absorbed in an aqueous solution of sodium hydroxide and/or sodium sulfide. The second step introduces sulfuric acid and sulfur dioxide gas into the resulting solution to deposit sulfur. This process not only purifies the gas but also allows for the recovery of sulfur using a specialized apparatus.

Career Highlights

Hirashita is associated with Asahi Kasei Kogyo Kabushiki Kaisha, a leading company in the chemical industry. His work has been instrumental in developing technologies that mitigate environmental impacts caused by industrial waste gases. His innovative methods have the potential to enhance sustainability in various industrial processes.

Collaborations

Hirashita has collaborated with notable colleagues, including Koichi Murayama and Tokuzo Asakusa. These partnerships have fostered a collaborative environment that encourages innovation and the sharing of ideas.

Conclusion

Isao Hirashita's contributions to gas purification technology exemplify the importance of innovation in addressing environmental challenges. His patented methods not only provide solutions for pollution but also promote the recovery of valuable resources. His work continues to inspire advancements in environmental 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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