This inventor holds 40 USPTO granted patents and 9 published patent applications and 10 EPO patents, primarily in Organosilicon Compounds. Top assignees: Shin-Etsu Chemical Co., Ltd., Canon Kabushiki Kaisha, Yamakawa Yakuhin Kogyo Kabushiki Kaisha. Active years: 1989-2026.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Urawa, JP (1989)
- Gunma-ken, JP (1998 - 2000)
- Usui-gun, JP (2001)
- Gumma, JP (2009)
- Gunma, JP (1992 - 2014)
- Annaka, JP (1990 - 2023)
Company Filing History:


Years Active: 1989-2026
Areas of Expertise:
Title: The Innovative Contributions of Masanao Kamei
Introduction
Masanao Kamei, a distinguished inventor residing in Annaka, Japan, has made significant strides in the field of material science and cosmetics, holding a total of 39 patents. His innovative approaches have led to the development of advanced techniques and products that address the challenges in evaluating hydrophobicity and enhancing cosmetic formulations.
Latest Patents
Among Masanao Kamei's recent inventions are groundbreaking patents that focus on analyzing and improving the hydrophobic properties of materials. One notable patent is the "Method for analyzing degree of hydrophobicity of powder," which introduces a novel method for evaluating powder hydrophobicity through a mixed solvent system. This method deploys a lipophilic solvent alongside a hydrophilic solvent, allowing for the precise measurement of the voltage rate and the determination of a representative value for hydrophobicity.
Additionally, he has developed a "highly hydrophobized coloring pigment" and a "cosmetic containing said coloring pigment." The cosmetic invention features at least one cyclic silicone, characterized by having a specific boiling point and viscosity that enhances its application properties, offering a light touch, excellent spreadability, water repellency, and a stable cosmetic film that resists degradation over time.
Career Highlights
Throughout his illustrious career, Masanao Kamei has had the opportunity to work with esteemed companies, including Shin-Etsu Chemical Co., Ltd. and Canon Kabushiki Kaisha. His work in these organizations has not only contributed to his personal patent portfolio but also advanced the industries involved in chemical engineering and cosmetic formulation.
Collaborations
Collaboration has been a cornerstone of Kamei's innovative journey. He has worked alongside notable colleagues, such as Hiroyuki Nohira and Yoko Yamada, fostering a collaborative environment that has led to shared insights and advancements in their respective fields.
Conclusion
Masanao Kamei stands out as a prolific inventor whose contributions have significantly impacted the assessment of hydrophobicity and the cosmetic industry. With a firm grasp of scientific principles combined with innovative thinking, Kamei continues to pave the way for advancements that blend utility with elegance, enhancing the functionality of various products on the market today.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile