Saratoga, CA, United States of America

Po-Yung Chang

This inventor holds 23 USPTO granted patents and 1 published patent application, primarily in Processor Architecture. Top assignees: Apple Inc., P.a. Semi, Inc., Broadcom Corporation. Active years: 2005-2016.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Po-Yung Chang. Retrieved from https://idiyas.com/inventor/po-yung-chang

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

Calculating rank
USPTO Granted Patents = 23 

% Patents Active = 56.5

Average Co-Inventor Count = 3.1

ph-index = 6

Forward Citations = 137(Granted Patents)


Company Filing History:


Years Active: 2005-2016

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Areas of Expertise:
Load Ordering
Data Prefetch Unit
Memory Barrier
Replay Reduction
Store Handling
Misalignment Predictor
Load Dependency
Store Operation
Speculative Instructions
Pipelined Processor
Snoop Operations
Buffer Management
23 patents (USPTO):Explore Patents

Title: The Innovative Contributions of Po-Yung Chang

Introduction: Po-Yung Chang, a distinguished inventor based in Saratoga, CA, has made significant strides in the field of computer architecture with a remarkable portfolio of 23 patents. His work primarily focuses on advancing the efficiency and performance of processors, which is critical in today’s technology-driven world.

Latest Patents: Among his latest innovations, the patent titled "Load ordering in a weakly-ordered processor" introduces techniques for managing load instructions within a weakly-ordered memory model. It describes a processor featuring a cache with multiple lines and a store queue that monitors the status of store instructions. Notably, the processor employs an indicator in the status information to sequence load instructions effectively, thereby maintaining the integrity of load-load ordering. Another recent patent, "Store handling in a processor," details a system where processors write ECC granular stores into the data cache while merging non-ECC granular stores with cache data in a memory request buffer. This patent also innovatively allows a processor to speculatively issue stores following a load, enhancing overall processing efficiency.

Career Highlights: Throughout his career, Po-Yung Chang has been associated with prominent technology firms that have propelled his contributions to the forefront. He has worked at Apple Inc. and P.A. Semi, Inc., both renowned for their pioneering work in semiconductor technology and innovative product development. His experiences in these companies have played a pivotal role in shaping his inventive path.

Collaborations: Collaboration is crucial in the innovative process, and Po-Yung Chang has partnered with notable professionals in the field, including Sudarshan Kadambi and Tse-Yu Yeh. Their collective expertise has undoubtedly contributed to the successful development of groundbreaking technologies and patents.

Conclusion: Po-Yung Chang exemplifies the innovative spirit with his extensive patent portfolio and remarkable collaborations. His contributions to processor technology stand as a testament to his dedication and influence in the field. As technology continues to evolve, the impact of his inventions will be felt for years to come.

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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