This inventor holds 6 USPTO granted patents and 1 published patent application. Top assignees: Astellas Pharma Gmbh, Tokyo Medical and Dental University, Yamanouchi Pharmaceutical Company Ltd.. Active years: 2003-2025.
Location History:
- Tokyo, JP (2010)
- Shizuoka, JP (2003 - 2012)
- Shizuoka-ken, JP (2012)
Company Filing History:
5 out of 424 
1 out of 135 
1 out of 329 Years Active: 2003-2025
Title: Keiichi Yoshihara: Innovator in Hemostasis and Pharmaceutical Composition
Introduction
Keiichi Yoshihara is a notable inventor based in Shizuoka, Japan. He has made significant contributions to the fields of hemostasis and pharmaceutical compositions. With a total of 6 patents to his name, his work has had a considerable impact on medical practices.
Latest Patents
One of Yoshihara's latest inventions is a thrombin-carrying hemostatic sheet. This innovative product is designed for effective hemostasis during surgeries, particularly spine surgeries. It is convenient to use without any preparation and is bioabsorbable, allowing it to be embedded in the body. The hemostatic sheet consists of a gelatin sponge that carries an effective amount of thrombin, with a density ranging from 30 to 55 mg/cm and a shape maintaining angle in wet conditions between 55 to 120°.
Another significant patent is a sustained-release pharmaceutical composition. This composition includes tamsulosin or a pharmaceutically acceptable salt and a carrier for sustained release. According to the Japanese Pharmacopoeia Dissolution Test Method 2, the tamsulosin release after 7 hours is approximately 20 to 85%.
Career Highlights
Throughout his career, Keiichi Yoshihara has worked with prominent companies in the pharmaceutical industry, including Astellas Pharma GmbH and Yamanouchi Pharmaceutical Company Ltd. His experience in these organizations has contributed to his expertise in developing innovative medical solutions.
Collaborations
Yoshihara has collaborated with notable colleagues such as Kazuhiro Sako and Toyohiro Sawada. These partnerships have likely enhanced his research and development efforts, leading to successful innovations.
Conclusion
Keiichi Yoshihara's contributions to medical technology through his patents demonstrate his commitment to improving healthcare solutions. His work in hemostasis and pharmaceutical compositions continues to influence the medical field positively.