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For the Inventor, By the Inventor

Yokohama, Japan

Masaru Ubasawa

This inventor holds 9 USPTO granted patents. Top assignees: Mitsubishi Chemical Corporation, Mitsubishi Kasei Corporation. Active years: 1992-2001.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masaru Ubasawa. Retrieved from https://idiyas.com/inventor/masaru-ubasawa

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

USPTO Granted Patents = 9

% Patents Active = 100.0

Average Co-Inventor Count = 4.4

ph-index = 7

Forward Citations = 177(Granted Patents)


Location History:

  • Yokohama, JP (1992 - 1997)
  • Kanagawa-ken, JP (2000)
  • Kanagawa, JP (1998 - 2001)

Company Filing History:

goldMedal5 out of 2,423 
 
Mitsubishi Chemical Corporation
 patents
silverMedal4 out of 499 
 
Mitsubishi Kasei Corporation
 patents

Years Active: 1992-2001

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9 patents (USPTO):Explore Patents
1. 6197775 - Phosphonate nucleotide derivatives (2001-03-06),
2. 6194398 - Phosphonate nucleotide compound (2001-02-27),
3. 6037335 - Phosphonate-nucleotide ester derivatives (2000-03-14),
4. 5840716 - Phosphonate nucleotide compounds (1998-11-24),
5. 5604209 - Synergistic antiviral compositions (1997-02-18),
6. 5461060 - Pyrimidine derivatives and anti-viral agent containing the same as (1995-10-24),
7. 5318972 - Pyrimidine nucleoside derivative and antiviral agent containing the (1994-06-07),
8. 5206255 - Heterocyclic compound (1993-04-27),
9. 5112835 - 6-substituted acyclopyrimidine nucleoside derivatives and antiviral (1992-05-12),

Title: The Innovations of Masaru Ubasawa

Introduction

Masaru Ubasawa is a notable inventor based in Yokohama, Japan. He has made significant contributions to the field of chemistry, particularly in the development of antiviral compounds. With a total of 9 patents to his name, Ubasawa's work has had a considerable impact on the scientific community.

Latest Patents

Among his latest patents are the phosphonate nucleotide derivatives, which are compounds represented by a specific general formula that exhibit antiviral activity. Additionally, he has developed phosphonate nucleotide compounds, also represented by a defined formula, which further contribute to his innovative portfolio.

Career Highlights

Throughout his career, Ubasawa has worked with prominent companies such as Mitsubishi Chemical Corporation and Mitsubishi Kasei Corporation. His experience in these organizations has allowed him to refine his skills and contribute to groundbreaking research in his field.

Collaborations

Masaru Ubasawa has collaborated with esteemed colleagues, including Hideaki Takashima and Kouichi Sekiya. These partnerships have fostered a collaborative environment that has led to the advancement of various projects and innovations.

Conclusion

Masaru Ubasawa's contributions to the field of chemistry and his innovative patents highlight his role as a significant inventor. His work continues to influence the development of antiviral compounds and showcases the importance of collaboration in scientific research.

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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