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For the Inventor, By the Inventor

Nishinomiya, Japan

Iwao Nakatsuka

USPTO Granted Patents = 13

Average Co-Inventor Count = 4.8

ph-index = 5

Forward Citations = 77(Granted Patents)


Location History:

  • Nishinomiya, JA (1976 - 1977)
  • Osaka, JA (1977)
  • Kobe, JP (1987 - 2003)

Company Filing History:

goldMedal13 out of 6,896 
 
Sumitomo Chemical Company, Limited
 patents

Years Active: 1976-2003

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13 patents (USPTO):Explore Patents
1. 6620593 - Method for safety evaluation of chemical compound using recombinant yeast expressing human cytochrome P450 (2003-09-16),
2. 5821062 - Oligonucleotide for use in checking presence or absence of mutation in (1998-10-13),
3. 5216147 - Radioactive benzodiazepine derivatives (1993-06-01),
4. 4945162 - Novel radioactive propyl 2-iodospiroperidol and processes for the (1990-07-31),
5. 4885152 - Radioactive benzodiazepine derivatives (1989-12-05),
6. 4687852 - Radioactive iodospiroperidol (1987-08-18),
7. 4008237 - 2,3,5,8-Tetrahydro-5-alkoxy-8-oxofuro(2,3-g)quinoline-7-carboxylic acid (1977-02-15),
8. 4008220 - Penicillins (1977-02-15),
9. 4005075 - Penicillins and their preparation (1977-01-25),
10. 4003887 - Novel penicillins and their preparation (1977-01-18),
11. 3992371 - Penicillins substituted with heterocyclic and substituted phenyl groups (1976-11-16),
12. 3954733 - Naphthyridine-3-carboxamido-benzylpenicillins and salts thereof (1976-05-04),
13. 3945995 - D-.alpha.-(4-hydroxypyridine-3-carbonamido)-p-hydroxyphenylacetamidopenic (1976-03-23),

Title: The Innovations of Iwao Nakatsuka: A Pioneer in Chemical Safety Evaluation

Introduction

Iwao Nakatsuka, an accomplished inventor based in Nishinomiya, Japan, has made noteworthy contributions to the field of chemical safety through his innovative approaches. With 13 patents to his name, Nakatsuka's work exemplifies the intersection of biotechnology and safety assessment, particularly through the use of recombinant yeast technology.

Latest Patents

One of Nakatsuka's most significant recent patents is a method for the safety evaluation of chemical compounds. This method involves reacting a chemical compound with recombinant yeast cells that produce human cytochrome P450 molecular species, such as P450 1A2, P450 2C9, P450 2E1, and P450 3A4, alongside yeast NADPH-P450 reductase. The procedure includes analyzing the resulting metabolites to ascertain whether a test compound could become carcinogenic or mutagenic during metabolism in the human liver. This innovative method enhances the assessment of potential risks associated with chemical compounds, ensuring safety in various applications.

Career Highlights

Iwao Nakatsuka has built a robust career with significant achievements in the chemical industry. He is currently employed at Sumitomo Chemical Company, Limited, where he continues to leverage his expertise in safety evaluation methods and biotechnology. His innovative thinking has led to breakthroughs that have implications in pharmaceutical development and chemical safety protocols.

Collaborations

Throughout his career, Nakatsuka has collaborated with esteemed colleagues, including Takenari Nakagome and Hisao Tobiki. These partnerships have facilitated the exchange of ideas and strengthened the development of innovative methodologies in his field, further emphasizing the importance of collaboration in the realm of scientific research.

Conclusion

Iwao Nakatsuka stands out as a significant figure in the field of chemical safety evaluation. With his numerous patents and innovative methodologies, he has contributed to advancing the understanding of how chemical compounds interact within the human body. His ongoing work at Sumitomo Chemical Company, Limited, along with fruitful collaborations, showcases his dedication to ensuring a safer future through innovation.

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