Location History:
- Takarazuka, JP (1988)
- Hyogo, JP (1992)
- Kobe, JP (1993 - 1994)
Company Filing History:
5 out of 174 
1 out of 191 Years Active: 1988-1994
Title: Innovations of Yoshiyuki Kai
Introduction
Yoshiyuki Kai is a notable inventor based in Kobe, Japan. He has made significant contributions to the field of biotechnology, particularly in the development of polyethylene glycol derivatives. With a total of 5 patents to his name, his work has had a substantial impact on protein modification and therapeutic applications.
Latest Patents
Yoshiyuki Kai's latest patents include innovative processes for preparing high purity polyethylene glycol derivatives. One of his patents focuses on the use of these derivatives as protein modifiers for interferons, t-PA, EGF, and various hormones. The modified proteins exhibit minimized antigenicity, prolonged plasma half-life, and improved tissue transfer. Another patent details a polyethylene glycol derivative capable of modifying guanidino groups in peptides, resulting in peptides that are extremely stable and exhibit prolonged physiological activity.
Career Highlights
Throughout his career, Yoshiyuki Kai has worked with prominent companies in the pharmaceutical industry, including Sumitomo Pharmaceuticals Company Limited and Seikagaku Corporation. His expertise in the field has allowed him to contribute to advancements in drug development and therapeutic solutions.
Collaborations
Yoshiyuki has collaborated with esteemed colleagues such as Keiichi Ono and Hiroo Maeda. These partnerships have further enhanced his research and innovation efforts in biotechnology.
Conclusion
Yoshiyuki Kai's contributions to the field of biotechnology through his patents and collaborations highlight his role as a significant inventor. His work continues to influence the development of therapeutic proteins and their applications in medicine.
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.