Company Filing History:

11 out of 677

Eisai Company, Limited

patents

1 out of 527

Eisai R&d Management Co., Ltd.

patents

Years Active: 1990-2007

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12 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 7211589 - Atisane compounds and use thereof (2007-05-01),

2. 6281214 - Biphenyl derivatives (2001-08-28),

3. 5919778 - Cyclic amide derivatives (1999-07-06),

4. 5849912 - Biphenyl derivatives (1998-12-15),

5. 5654308 - Bicyclic amide derivatives, compositions and methods of treatment (1997-08-05),

6. 5620976 - Benzoxazine derivatives (1997-04-15),

7. 5523307 - Cyclic amine and pharmacological composition (1996-06-04),

8. 5521182 - 1,2,3,4 tetrahydropteridinone cyclic amide derivatives (1996-05-28),

9. 5504088 - 2H-3,4-tetrahydroquinazoline-2-one and (1996-04-02),

10. 5292735 - Cyclic amide derivatives (1994-03-08),

11. 5196439 - Piperidine compounds useful to treat cerebrovascular diseases (1993-03-23),

12. 4921863 - Cyclic amine derivatives (1990-05-01),

Title: Masahiro Yonaga: Innovator in Pharmaceutical Compounds

Introduction

Masahiro Yonaga is a prominent inventor based in Ibaraki, Japan. He has made significant contributions to the field of pharmaceuticals, holding a total of 12 patents. His work focuses on developing novel compounds that address critical health issues.

Latest Patents

Among his latest patents is a groundbreaking invention related to Atisane compounds. This invention provides a novel compound that exhibits an excellent suppressing effect on cell injury caused by radicals and neurotoxicity induced by excitatory neurotransmitters such as glutamate. Specifically, it presents a compound represented by a specific formula, including a salt or hydrate thereof. The compound features a bivalent organic group with 2 to 3 carbon atoms, which may have substituents, and a carboxyl group. Another notable patent involves biphenyl derivatives, which are represented by a specific formula or a pharmacologically acceptable salt thereof.

Career Highlights

Masahiro Yonaga has worked with notable companies in the pharmaceutical industry, including Eisai Company, Limited and Eisai R&D Management Co., Ltd. His experience in these organizations has allowed him to contribute to significant advancements in drug development.

Collaborations

Throughout his career, Masahiro has collaborated with esteemed colleagues such as Hachiro Sugimoto and Norio Karibe. These partnerships have fostered innovation and enhanced the impact of his work in the pharmaceutical sector.

Conclusion

Masahiro Yonaga's contributions to the field of pharmaceuticals through his innovative patents and collaborations highlight his role as a key inventor. His work continues to influence advancements in medical science and improve health outcomes.

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Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.