Akira Yokoyama

This inventor holds 14 USPTO granted patents. Top assignees: Nihon Medi-Physics Company, Limited, Sumitomo Chemical Company, Limited. Active years: 1981-2004.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Akira Yokoyama. Retrieved from https://idiyas.com/inventor/akira-yokoyama

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

USPTO Granted Patents = 14

% Patents Active = 92.9

Average Co-Inventor Count = 2.6

ph-index = 7

Forward Citations = 133(Granted Patents)

Location History:

Ohtsu, JP (1986)
Otsu, JP (1981 - 1990)
Shiga-ken, JP (1998 - 1999)
Shiga, JP (1991 - 2004)

Company Filing History:

13 out of 142

Nihon Medi-Physics Company, Limited

patents

1 out of 6,964

Sumitomo Chemical Company, Limited

patents

Years Active: 1981-2004

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14 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 6814952 - Diagnostic imaging agent useful for selecting a therapy for cancerous bone metastasis (2004-11-09),

2. 5904915 - Method of diagnosing pathological state of tumor cells using a (1999-05-18),

3. 5843400 - Diagnostic agent for hypoxia or mitochondrial dysfunction comprising (1998-12-01),

4. 5034212 - Method of imaging using a radioactive glucosamine derivative (1991-07-23),

5. 4915931 - Tc-99m mononuclide complex compound (1990-04-10),

6. 4739060 - Radioactive and non-radioactive iodobutyrophenone derivative (1988-04-19),

7. 4645660 - Increasing labeling efficiency by forming diagnostic agent in the (1987-02-24),

8. 4619823 - Radioactive iodine labeled metaraminol and diagnostic agent containing (1986-10-28),

9. 4559221 - P-Glyoxyloylphenylalkanoic acid bis(thiosemicarbazone) derivatives, and (1985-12-17),

10. 4511550 - 1-(p-Substituted or unsubstituted aminoalkyl)phenylpropane-1,2-dione (1985-04-16),

11. 4444743 - Radioactive diagnostic agent and its preparation (1984-04-24),

12. 4425319 - Radioactive diagnostic agent and non-radioactive carrier therefor (1984-01-10),

13. 4338248 - 2-Oxopropionaldehyde bis(thiosemicarbazone) protein derivatives, and (1982-07-06),

14. 4287362 - 2-Oxopropionaldehyde bis(thiosemicarbazone) derivatives (1981-09-01),

Title: Acclaimed Inventor Akira Yokoyama: Pioneering Diagnostic Imaging Agents

Introduction

Akira Yokoyama, an illustrious inventor based in Otsu, Japan, has made significant contributions to the field of medical imaging and diagnostics. With an impressive portfolio of 14 patents, Yokoyama's innovations are at the forefront of enhancing cancer treatment through advanced diagnostic methods.

Latest Patents

Among Yokoyama's notable inventions is a diagnostic imaging agent designed for selecting therapies for cancerous bone metastasis. This agent utilizes Tc(V)-dimercaptosuccinic acid as its effective ingredient, allowing for precise scintigram imaging. This development is particularly useful for identifying osteoclastic and mixed type bone metastases, facilitating the appropriate selection of therapeutic interventions.

Another remarkable patent involves a diagnostic agent for assessing glycometabolic function. This innovative agent is characterized by a glucose derivative formula, making it a valuable tool in cancer diagnosis, particularly through zeroing in on the metabolic activities of tumor cells.

Career Highlights

Throughout his career, Akira Yokoyama has contributed to several prominent organizations. He has gained extensive experience working with Nihon Medi-Physics Company, Limited and Sumitomo Chemical Company, Limited, where he has successfully translated research into practical applications that advance medical technology.

Collaborations

Yokoyama's work has often been collaborative, and he has partnered with esteemed professionals in the field, including Yasushi Arano and Hideo Saji. These collaborations have enhanced the scope and impact of his inventions, contributing to innovative solutions in diagnostic imaging.

Conclusion

Akira Yokoyama’s extensive patent portfolio and commitment to improving cancer diagnostics establish him as a leading figure in medical innovation. His work continues to pave the way for advancements that will ultimately benefit countless patients confronting cancer-related challenges.

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]