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For the Inventor, By the Inventor

Kawanishi, Japan

Yoshimasa Saito

This inventor holds 17 USPTO granted patents, plus 1 CIPO patent. Top assignees: Fujisawa Pharmaceutical Company, Ltd., Astellas Pharma Gmbh. Active years: 1988-2006.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yoshimasa Saito. Retrieved from https://idiyas.com/inventor/yoshimasa-saito

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

USPTO Granted Patents = 17

% Patents Active = 88.2


Average Co-Inventor Count = 5.3

ph-index = 5

Forward Citations = 80(Granted Patents)


Location History:

  • Osaka, JP (1988 - 2002)
  • Mitaka, JP (2004)
  • Kawanishi, JP (1994 - 2006)

Company Filing History:

goldMedal16 out of 940 
 
Fujisawa Pharmaceutical Company, Ltd.
 patents
silverMedal1 out of 424 
 
Astellas Pharma Gmbh
 patents

Years Active: 1988-2006

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17 patents (USPTO):Explore Patents
1. 7037892 - Hematopoietic stem cell proliferating agents (2006-05-02),
2. 6825018 - Sorbitol dehydrogenase, gene encoding the same and use thereof (2004-11-30),
3. 6495365 - Hematopoietic stem cell proliferating agents (2002-12-17),
4. 6403336 - Process for the production of &agr;-human atrial natriuretic polypeptide (2002-06-11),
5. 6399340 - Vector derivatives of gluconobacter plasmid pF4 (2002-06-04),
6. 6197562 - L-sorbose dehydrogenase and novel L-sorbosone dehydrogenase obtained from gluconobacter oxydans T-100 (2001-03-06),
7. 5888786 - Method for producing 2-keto-L-gulonic acid (1999-03-30),
8. 5861292 - L-sorbose dehydrogenase and novel L-sorbosone dehydrogenase obtained (1999-01-19),
9. 5840533 - Tissue plasminogen activator (1998-11-24),
10. 5834263 - Method for producing 2-keto-L-gulonic acid (1998-11-10),
11. 5804429 - Cephalosporin C acylase (1998-09-08),
12. 5753481 - L-sorbose dehydrogenase and novel L-sorbosone dehydrogenase obtained (1998-05-19),
13. 5648250 - Tissue plasminogen activator (1997-07-15),
14. 5340725 - Expression vector for insulin-like growth factor I and method of (1994-08-23),
15. 5336613 - Cephalosporin C acylase (1994-08-09),

Title: **The Innovative Journey of Yoshimasa Saito**

Introduction

Yoshimasa Saito, an accomplished inventor from Kawanishi, Japan, has made significant contributions to the field of biotechnology, holding a total of 17 patents. His innovations focus primarily on hematopoietic stem cell technology and enzymatic processes vital for producing essential compounds.

Latest Patents

Among his latest patents, Saito has developed a hematopoietic stem cell proliferating agent that comprises IGF-I, along with proteins such as SCF, M-CSF, and G-CSF. This groundbreaking invention enhances the cultivation of hematopoietic stem cells, facilitating their proliferation in both in vivo and in vitro conditions. The application of this agent is particularly crucial for treating cytopenia induced by chemotherapy or radiotherapy, and it holds promise for gene therapy applications.

Another notable patent involves D-sorbitol dehydrogenase (SLDH), for which Saito has identified the encoding gene and outlined a process for producing SLDH via host cell culture. This enzymatic advancement allows for the processing of L-sorbose and 2-keto-L-gulonic acid (2KLGA), a vital precursor in producing L-ascorbic acid, commonly known as Vitamin C.

Career Highlights

Throughout his career, Saito has worked with several prominent pharmaceutical companies, including Fujisawa Pharmaceutical Company and Astellas Pharma. His roles in these organizations underscored his dedication to advancing medical technologies and therapeutic solutions.

Collaborations

Saito has collaborated with esteemed colleagues, including Mineo Niwa and Yoshinori Ishii. Together, they have contributed to pioneering research and advancements in biopharmaceuticals, further enhancing the applications of stem cell biology.

Conclusion

Yoshimasa Saito stands out as an influential inventor whose work is making a lasting impact in the field of biotechnology. His innovative patents, combined with his collaborative efforts, pave the way for new treatments and understanding of hematopoietic processes and enzyme functionalities. As the field continues to evolve, Saito's contributions will undoubtedly play a key role in shaping the future of medical science.

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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