Osaka, Japan

Tomoiku Ohtani

This inventor holds 3 USPTO granted patents and 1 published patent application. Top assignees: Sumitomo Special Metals Co., Ltd., Neomax Co., Ltd.. Active years: 2003-2005.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tomoiku Ohtani. Retrieved from https://idiyas.com/inventor/tomoiku-ohtani

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

Calculating rank
USPTO Granted Patents = 3 

% Patents Active = 100.0

Average Co-Inventor Count = 6.0

ph-index = 2

Forward Citations = 12(Granted Patents)


Location History:

  • Yao, JP (2003)
  • Osaka, JP (2004 - 2005)

Company Filing History:


Years Active: 2003-2005

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3 patents (USPTO):Explore Patents

Title: The Innovative Journey of Tomoiku Ohtani

Introduction

Tomoiku Ohtani, an accomplished inventor based in Osaka, Japan, has significantly contributed to the field of rare-earth magnet production. With a total of three patents to his name, his work demonstrates a deep commitment to innovation and technical advancement in this specialized area of material science.

Latest Patents

Ohtani's latest patents include a "Powder compacting apparatus and method of producing a rare-earth magnet using the same." This invention aims to prevent heating and ignition of rare-earth alloy powder materials while simultaneously reducing their oxygen content, thereby enhancing the magnetic properties of the resultant rare-earth magnets. The apparatus features an airtight container designed to hold the rare-earth alloy powder and an airtight feeder box that moves between a powder-filling and a retracted position. Additionally, it employs an airtight powder supply device to supply the alloy powder from the container directly into the feeder box, effectively shielding it from atmospheric air exposure. Furthermore, Ohtani has developed a method for producing rare-earth sintered magnets, which involves compacting alloy powder to form a green compact, loading it into a specially designed case, and sintering it in a decompressed atmosphere.

Career Highlights

Ohtani has worked with prominent companies such as Sumitomo Special Metals Co., Ltd. and Neomax Co., Ltd., where he has further honed his expertise in material science and patent development. His innovative efforts in these organizations have played a crucial role in advancing the production techniques for rare-earth magnets.

Collaborations

Throughout his career, Tomoiku Ohtani has collaborated with notable coworkers, including Koki Tokuhara and Kunitoshi Kanno. These partnerships have been pivotal in fostering an environment of innovation and excellence within the industry.

Conclusion

In summary, Tomoiku Ohtani stands out as a dedicated inventor whose patents and contributions have made a significant impact on the production of rare-earth magnets. His innovative mindset and collaborative spirit continue to drive advancements in this specialized field, highlighting the importance of such inventions in modern 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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