Company Filing History:
6 out of 55 
1 out of 6,892 Years Active: 2002-2007
Title: Innovations of Eiichi Iishi in Pharmaceutical Chemistry
Introduction
Eiichi Iishi is a notable inventor based in Osaka, Japan, recognized for his contributions to pharmaceutical chemistry. He holds a total of seven patents, primarily focusing on the development of anhydrous mirtazapine crystals, which have significant applications in the field of antidepressants.
Latest Patents
Iishi's latest patents include the creation of low-hygroscopic anhydrous mirtazapine crystals. These crystals exhibit a hygroscopic degree of not more than 0.6% by weight when stored in air with a relative humidity of 75% at 25°C under atmospheric pressure for 500 hours. Additionally, he has developed a process for preparing these anhydrous mirtazapine crystals, which involves drying crystals of mirtazapine hydrate. His work also includes a crystal of mirtazapine hydrate represented by a specific formula, and a process for preparing these crystals through crystallization using a water-soluble organic solvent and water.
Career Highlights
Throughout his career, Eiichi Iishi has worked with prominent companies such as Sumika Fine Chemicals Co., Ltd. and Sumitomo Chemical Company, Limited. His expertise in the field has led to significant advancements in the preparation and application of pharmaceutical compounds.
Collaborations
Iishi has collaborated with notable coworkers, including Yoshiyuki Imamiya and Chiharu Maeda, contributing to the innovative research and development in his field.
Conclusion
Eiichi Iishi's work in developing anhydrous mirtazapine crystals represents a significant advancement in pharmaceutical chemistry. His contributions continue to impact the field of antidepressants positively.
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.