Vancouver, Canada

Daniel Liu

This inventor holds 2 USPTO granted patents. Top assignee: Quadra Logic Technologies, Inc.. Active years: 1991-1993.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Daniel Liu. Retrieved from https://idiyas.com/inventor/daniel-liu-jtn8t052

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile


% Patents Active = 100.0

Average Co-Inventor Count = 1.5

ph-index = 2

Forward Citations = 81(Granted Patents)


Company Filing History:


Years Active: 1991-1993

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2 patents (USPTO):Explore Patents

Title: Innovations by Daniel Liu in Photodynamic Therapy

Introduction

Daniel Liu is an accomplished inventor based in Vancouver, Canada. He has made significant contributions to the field of photodynamic therapy, holding 2 patents that focus on innovative compositions and methods for enhancing therapeutic efficacy.

Latest Patents

His latest patents include compositions for photodynamic therapy that describe methods to prepare intermediates for the conjugation of active ingredients to hydrophilic carriers. The process involves derivatizing polyhydroxylated carriers to convert hydroxyls into leaving groups, followed by a reaction with alkylene diamine in the presence of a reducing agent. This results in a derivatized carrier that can be coupled to substituents containing carboxyl groups using dehydrating agents. Another notable patent involves porphyrin-type photosensitizers that can be formulated as water-soluble drugs through conjugation with hydrophilic polymers, such as polyvinyl alcohol. This innovative approach allows for improved solubility and biodistribution, offering advantages over traditional administration methods.

Career Highlights

Daniel Liu is currently employed at Quadra Logic Technologies, Inc., where he continues to develop groundbreaking solutions in the medical field. His work has positioned him as a key player in the advancement of photodynamic therapy technologies.

Collaborations

He collaborates with talented individuals such as Frank Jiang and John Hobbs, contributing to a dynamic team focused on innovation and research.

Conclusion

Daniel Liu's contributions to photodynamic therapy through his patents and collaborative efforts highlight his role as a significant inventor in the field. His work continues to pave the way for advancements in medical treatments.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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