Yasuhiro Kajihara

This inventor holds 25 USPTO granted patents and 10 published patent applications, plus 14 CIPO patents and 17 EPO patents, primarily in Peptide Production. Top assignees: Glytech, Inc., Otsuka Chemical Co., Ltd., Japan Tobacco Inc.. Active years: 1995-2024.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yasuhiro Kajihara. Retrieved from https://idiyas.com/inventor/yasuhiro-kajihara

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

Calculating rank

USPTO Granted Patents = 25 (Patent Applications = 10)

% Patents Active = 84.0

CIPO Patents = 14 (Patent Applications = 2)

EPO Patents = 17 (Patent Applications = 8)

Average Co-Inventor Count = 2.8

ph-index = 3

Forward Citations = 19(Granted Patents)

Location History:

Kanagawa, JP (1995)
Yokohama-shi, Kanagawa JP (2006 - 2007)
Yokohama, JP (1997 - 2013)
Tokushima, JP (2014)
Toyonaka, JP (2013 - 2018)
Kyoto, JP (2019)
Osaka, JP (2015 - 2022)

Company Filing History:

Otsuka Chemical Co., Ltd.

Otsuka Chemical Holdings Co., Ltd.

6. 4 out of 834,601

Other

patents

where one patent can have more than one assignee

Years Active: 1995-2024

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Areas of Expertise:

Peptide Thioester

Amino-Acid Polymer

Glycosylated Polypeptide

Sialylated Sugar Chains

Glycopeptide

D-Form Amino Acid

Sugar Chain Derivatives

Asparagine Linked Oligosaccharides

Medical Drug

Sialic Acid Derivative

Sugar Compounds

Glycopeptides

25 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 12103947 - Methods for producing peptide thioester and peptide (2024-10-01),

2. 11214592 - Production method for amino-acid polymer (2022-01-04),

3. 10913763 - Method for producing sugar having sulfate group and/or phosphate group (2021-02-09),

4. 10358470 - Glycosylated polypeptide and pharmaceutical composition containing same (2019-07-23),

5. 10053499 - Polypeptide having sialylated sugar chains attached thereto (2018-08-21),

6. 10047042 - Method for producing D-form or L-form amino acid derivative having thiol group (2018-08-14),

7. 9127041 - Process for production of peptide thioester (2015-09-08),

8. 9073978 - Method for producing glycopeptide having sialyl sugar chain, sialyl sugar chain-added amino acid derivative to be used in same, and glycopeptide (2015-07-07),

9. 8809258 - Method for producing peptide (2014-08-19),

10. 8765669 - Glycosylated GLP-1 peptide (2014-07-01),

11. 8642725 - Process for production of peptide thioester (2014-02-04),

12. 8507429 - Sugar chain added GLP-1 peptide (2013-08-13),

13. 8399656 - Process for preparing glycopeptides having asparagine-linked oligosaccharides, and the glycopeptides (2013-03-19),

14. 8158763 - Sugar chain asparagine derivatives, sugar chain asparagine, sugar chain and processes for producing these (2012-04-17),

15. 8063202 - Process for preparing glycopeptides having asparagine-linked oligosaccharides, and the glycopeptides (2011-11-22),

Title: Innovations in Peptide Chemistry: The Contributions of Yasuhiro Kajihara

Introduction: Yasuhiro Kajihara, located in Yokohama, Japan, is a prominent innovator in the field of peptide chemistry, holding an impressive portfolio of 25 patents. His work focuses on developing novel methods for producing peptide thioesters and amino acid polymers, which have significant implications in various biotechnological applications.

Latest Patents: Kajihara's recent patents showcase his commitment to enhancing peptide synthesis methods. One of his notable inventions is a novel approach for producing peptide thioesters, emphasizing high efficiency and versatility. This method includes a unique sequence of steps that allows for the transfer of components within a peptide structure, leading to the synthesis of various peptide thioesters.

Additionally, he has developed a method for manufacturing amino acid polymers more simply and efficiently than conventional techniques. This innovative approach employs thioacid amino acids, enabling the creation of amino acid polymers linked by peptide bonds through an oxidation reaction, particularly using thioacid amino acids without protective groups.

Career Highlights: Over his career, Yasuhiro has worked with several leading companies, notably Glytech, Inc. and Otsuka Chemical Co., Ltd. His expertise in peptide chemistry has made significant strides within these organizations, contributing to advancements in biotechnology and pharmaceuticals.

Collaborations: Throughout his career, Kajihara has collaborated with talented peers, including Kazuhiro Fukae and Izumi Sakamoto. Their joint efforts in research further enhance the innovative spirit within the field of peptide synthesis.

Conclusion: Yasuhiro Kajihara's contributions to peptide chemistry through his inventive methodologies and active collaboration with industry professionals demonstrate his vital role as an innovator. His patents have opened new avenues for research and development in peptide-related applications, underscoring his importance in the scientific community.

Profile summary based on public USPTO records.