Okayama, Japan

Masahiko Sisido

This inventor holds 3 USPTO granted patents. Top assignees: Okayama University, Protein Express Co., Ltd., Other. Active years: 2008-2011.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masahiko Sisido. Retrieved from https://idiyas.com/inventor/masahiko-sisido

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

Calculating rank

% Patents Active = 33.3

Average Co-Inventor Count = 2.0

ph-index = 1

Forward Citations = 2(Granted Patents)


Company Filing History:

goldMedal2 out of 138 
 
Okayama University
 patents
silverMedal1 out of 2 
 
Protein Express Co., Ltd.
 patents
bronzeMedal1 out of 834,601 
Other
 patents
where one patent can have more than one assignee

Years Active: 2008-2011

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3 patents (USPTO):Explore Patents

Title: Innovations of Masahiko Sisido in Fluorescent Amino Acid Derivatives

Introduction

Masahiko Sisido is a prominent inventor based in Okayama, Japan. He has made significant contributions to the field of fluorescent amino acid derivatives, holding a total of three patents. His work focuses on developing substances that exhibit unique fluorescent properties, which have potential applications in various scientific fields.

Latest Patents

One of his latest patents is centered around fluorescent amino acid derivatives that can be excited under visible light. This invention aims to provide a fluorescent substance with higher photostability and a long fluorescence lifetime. The innovative approach involves creating a condensed polycyclic aromatic compound by modifying a compound with an acridone structure through substitution with an amino acid and further condensation with a benzene ring. The result is a fluorescent substance consisting of an amino acid-substituted benzoacridone derivative that is excitable under visible light.

Another notable patent by Sisido is focused on a fluorescent amino acid derivative that can be synthesized through simple steps. This derivative is particularly responsive to blue laser light and boasts improved light stability. The invention utilizes an acridone derivative substituted with an amino acid, incorporating an electrophilic substituent group between the two. This method diverges from conventional strategies by using a fluorescent acridone derivative as a starting material, allowing for a more efficient synthesis process.

Career Highlights

Masahiko Sisido has worked with reputable institutions, including Okayama University and Protein Express Co., Ltd. His research and innovations have garnered attention in the scientific community, contributing to advancements in the understanding and application of fluorescent substances.

Collaborations

Throughout his career, Sisido has collaborated with notable colleagues, including Masumi Taki and Takahiro Hohsaka. These partnerships have facilitated the exchange of ideas and expertise, further enhancing the impact of his work.

Conclusion

Masahiko Sisido's contributions to the field of fluorescent amino acid derivatives highlight his innovative spirit and dedication to scientific advancement. His patents reflect a commitment to developing new materials with practical applications, showcasing the importance of research in this area.

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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