This inventor holds 2 USPTO granted patents. Top assignees: Block Drug Company, Inc., Other. Active years: 1998.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
1 out of 104 
1 out of 834,659 Years Active: 1998
Title: Innovations by Tiang Shing Chang in Denture Adhesives
Introduction
Tiang Shing Chang is an accomplished inventor based in Westfield, NJ (US). He holds 2 patents that focus on advancements in denture adhesives. His work has significantly contributed to the field of dental care, particularly in improving the performance and effectiveness of denture fixatives.
Latest Patents
Chang's latest patents include a denture fixative with an adhesion promoter. This innovative composition comprises an adhesion promoter and a highly cross-linked copolymer of a lower alkyl vinyl ether and maleic anhydride or acid. The invention ensures that at least 65.0% of the total number of initial carboxyl groups in the copolymer are reacted. The cross-linking agent used in this invention is calcium cation, with the option to replace up to about 30.0% of the calcium function with other inorganic cross-linking agents or polyhydroxy compounds. The adhesion promoters utilized are chelating agents such as polycarboxylic acids, hydroxycarboxylic acids, aminocarboxylic acids, polyphosphoric acids, and their alkali salts.
Another notable patent is a denture adhesive containing partial zirconium, calcium, and sodium gantrez. This adhesive boasts significantly improved hold performance and is comprised of mixed partial salts of polymethyl vinyl ether maleic acid. At least one of these salts includes zirconium, while a second salt is selected from calcium, zinc, magnesium, iron, strontium, and their mixtures. The formulation is designed to be pharmaceutically acceptable and can be prepared as a paste, powder, or liquid, featuring rapid absorption characteristics for faster swelling, softening, and superior coalescence.
Career Highlights
Throughout his career, Tiang Shing Chang has worked with reputable companies, including Block Drug Company, Inc. His contributions to the field of dental adhesives have been recognized for their innovative approaches and practical applications.
Collaborations
Chang has collaborated with notable professionals in his field, including Hal C Clarke and Hyung-Kook Ahn. These collaborations have further enhanced the development of his inventions and their impact on dental care.
Conclusion
Tiang Shing Chang's innovative work in denture adhesives showcases his commitment to improving dental care solutions. His patents
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile