This inventor holds 3 USPTO granted patents. Top assignee: Allergan, Inc.. Active years: 1994.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
Years Active: 1994
Title: Nienyuan J Chang: Innovator in Pharmaceutical Delivery Systems
Introduction
Nienyuan J Chang is a prominent inventor based in Irvine, CA (US). He has made significant contributions to the field of pharmaceutical delivery systems, holding a total of 3 patents. His innovative work focuses on enhancing the efficacy and bioavailability of pharmaceutical compounds through advanced delivery methods.
Latest Patents
Chang's latest patents include groundbreaking compositions for controlled delivery of pharmaceutical compounds. One of his notable inventions involves sustained release pharmaceutical compound delivery compositions. This method utilizes ion exchange resin particles that are loaded with releasably bound pharmaceutical compounds. These particles are incorporated into an aqueous reversibly gelling polymeric solution. The design ensures that the pharmaceutical compound remains securely locked within the pores of the ion exchange resin until it reaches the target tissue site, where small ions trigger an exchange reaction.
Another significant patent by Chang is related to pH sensitive, reversible gelling, copolymeric erodible drug delivery systems. This invention comprises liquid solutions of poly(methylvinylether/maleic acid) that incorporate pharmaceutical compounds. The viscosity of these solutions increases with pH, allowing for effective adherence to tissue at physiological sites, thereby providing prolonged bioavailability of the pharmaceutical compound.
Career Highlights
Nienyuan J Chang is currently associated with Allergan, Inc., where he continues to develop innovative solutions in the pharmaceutical industry. His work has been instrumental in advancing drug delivery technologies, making significant impacts on patient care and treatment outcomes.
Collaborations
Chang collaborates with various professionals in the field, including his coworker Kenneth J Himmelstein. Their combined expertise contributes to the development of cutting-edge pharmaceutical solutions.
Conclusion
Nienyuan J Chang's contributions to pharmaceutical delivery systems exemplify the importance of innovation in healthcare. His patents reflect a commitment to improving drug efficacy and patient outcomes through advanced delivery methods.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile