This inventor holds 1 USPTO granted patent. Top assignee: Shanghai Zhenchun Cosmetics Co., Ltd.. Active years: 2026.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
Years Active: 2026
Title: Lijuan Cheng: Cosmetic Powder Production Innovation
Introduction
Lijuan Cheng is an inventor based in Shanghai, China. Her patent work focuses on a method for producing solid cosmetic powder.
Latest Patents
Cheng is associated with 1 patent, titled “Method for Producing Cosmetic Solid Powder.” The method combines a flaky filler, a spherical filler, and pigment to form one mixture, while a natural polysaccharide, water, an emollient moisturizer, and an emulsifier are combined to form another. The mixtures are blended with a preservative, poured into a mold, frozen, and demolded. The resulting semi-finished product is then dried in a lyophilizer to produce the finished powder.
Career Highlights
Cheng’s disclosed invention addresses the production process for solid cosmetic powder, using freezing and lyophilization as steps in forming the finished product. She is associated with Shanghai Zhenchun Cosmetics Co., Ltd.
Collaborations
Her listed coworkers include Sili Zeng and Xiaohua Cui.
Conclusion
Lijuan Cheng’s patent describes a structured approach to producing solid cosmetic powder through ingredient preparation, molding, freezing, and lyophilization.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile