Robert C Chang

This inventor holds 50 USPTO granted patents and 4 published patent applications and 10 EPO patents, primarily in Non-Volatile Memory (CPC class G06F). Top assignees: Sandisk Corporation, Sandisk Technologies Inc., Microelectronica Espanola S.a.u.. Active years: 2004-2018.

USPTO Granted Patents = 50 (Patent Applications = 4)

% Patents Active = 74.0

EPO Patents = 10 (Patent Applications = 8)

Average Co-Inventor Count = 3.4

ph-index = 19

Forward Citations = 1,122(Granted Patents)

Forward Citations (Not Self Cited) = 1,111(Dec 10, 2025)

Inventors with similar research interests:

Company Filing History:

Sandisk Technologies Inc.

patents

1 out of 2

Microelectronica Espanola S.a.u.

Years Active: 2004-2018

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Areas of Expertise:

Data Access

Memory Management

Firmware Updates

File System

Error Correction

Storage Device

Hybrid Mapping

Power Management

Secret Information Storage

Booting Process

Dynamic Configuration

Partition Management

50 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 10031918 - File system and method of file access (2018-07-24),

2. RE46023 - Memory device upgrade (2016-05-30),

3. 9032154 - Integration of secure data transfer applications for generic IO devices (2015-05-12),

4. 8984645 - Accessing memory device content using a network (2015-03-17),

5. 8913750 - Method for managing keys and/or rights objects (2014-12-16),

6. 8868929 - Method of mass storage memory management for large capacity universal integrated circuit cards (2014-10-21),

7. 8719709 - Method for interfacing with a memory card to access a program instruction (2014-05-06),

8. 8706990 - Adaptive internal table backup for non-volatile memory system (2014-04-22),

9. 8645438 - File system and method of file access (2014-02-04),

10. 8452934 - Controlled data access to non-volatile memory (2013-05-28),

11. 8443208 - System, method and device for playing back recorded audio, video or other content from non-volatile memory cards, compact disks, or other media (2013-05-14),

12. 8428649 - Memory device upgrade (2013-04-23),

13. 8412879 - Hybrid implementation for error correction codes within a non-volatile memory system (2013-04-02),

14. 8351609 - Method for managing keys and/or rights objects (2013-01-08),

15. 8296752 - Implementation of in-system programming to update firmware on memory cards (2012-10-23),

Title: Innovations and Patents of Robert C. Chang

Introduction

Robert C. Chang, based in Danville, CA, is an accomplished inventor with a remarkable portfolio of 50 patents. His work primarily revolves around advancements in file systems and storage technology, reflecting his commitment to enhancing data management solutions.

Latest Patents

Among his latest innovations are two notable patents. The first, titled "File System and Method of File Access," details a system where a host device retrieves file location data from a file data structure upon receiving a request to open a file. The device then reads the file's data from a connected storage device, simultaneously extracting relevant metadata.

The second patent, "Memory Device Upgrade," outlines a technology for upgrading storage units. This process involves transferring content from an old storage unit to a new one, with added security features. The procedure is managed by software installed on the device, ensuring a seamless transition and maintaining data integrity throughout the upgrade.

Career Highlights

Robert has made significant contributions during his tenure at various esteemed organizations. Notably, he worked at SanDisk Corporation and SanDisk Technologies Inc., where he developed his innovative ideas and collaborated with fellow engineers and inventors.

Collaborations

Throughout his career, Robert has teamed up with talented professionals, including Farshid Sabet-Sharghi and Bahman Qawami. These partnerships have fostered a collaborative environment that has led to groundbreaking developments in his field.

Conclusion

Robert C. Chang's extensive patent portfolio and innovative contributions in data management and storage solutions underscore his impact on the technology industry. His work not only marks significant advancements in file access and memory device upgrades but also reflects a commitment to continuous improvement and innovation.