Chih-Cheng Liu

This inventor holds 10 USPTO granted patents. Top assignees: United Microelectronics Corp., Powerchip Semiconductor Corporation. Active years: 2000-2007.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Chih-Cheng Liu. Retrieved from https://idiyas.com/inventor/chih-cheng-liu

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

USPTO Granted Patents = 10

% Patents Active = 70.0

Average Co-Inventor Count = 2.1

ph-index = 4

Forward Citations = 194(Granted Patents)

Location History:

Pan-Chiao, TW (2000 - 2002)
Taipei, TW (2002 - 2007)

Company Filing History:

9 out of 7,278

United Microelectronics Corp.

patents

1 out of 269

Powerchip Semiconductor Corporation

patents

Years Active: 2000-2007

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10 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 7200040 - Method of operating p-channel memory (2007-04-03),

2. 6466474 - Memory module having a two-transistor memory cell (2002-10-15),

3. 6441436 - SOI device and method of fabrication (2002-08-27),

4. 6392924 - Array for forming magnetoresistive random access memory with pseudo spin valve (2002-05-21),

5. 6271088 - Method for fabricating a buried vertical split gate memory device with high coupling ratio (2001-08-07),

6. 6235354 - Method of forming a level silicon oxide layer on two regions of different heights on a semiconductor wafer (2001-05-22),

7. 6221703 - Method of ion implantation for adjusting the threshold voltage of MOS transistors (2001-04-24),

8. 6197677 - Method of depositing a silicon oxide layer on a semiconductor wafer (2001-03-06),

9. 6159833 - Method of forming a contact hole in a semiconductor wafer (2000-12-11),

10. 615983 - Method of forming a contact hole in a semiconductor wafer (2000-12-12),

Title: Chih-Cheng Liu: Innovator in Memory Technology

Introduction

Chih-Cheng Liu is a prominent inventor based in Taipei, Taiwan. He has made significant contributions to the field of memory technology, holding a total of 10 patents. His innovative work has advanced the understanding and functionality of memory systems.

Latest Patents

One of Liu's latest patents is a method of operating P-channel memory. This method involves a substrate, a gate formed over the substrate, and a charge trapping structure located between the substrate and the gate. The invention describes an erasing operation that utilizes a specific voltage application to erase the P-channel memory through a tertiary hot hole mechanism. Another notable patent is for a memory module that features a two-transistor memory cell. This module is designed to store digital data efficiently, utilizing a capacitor to maintain voltage levels and compensate for charge leakage.

Career Highlights

Chih-Cheng Liu has worked with several notable companies in the semiconductor industry, including United Microelectronics Corporation and Powerchip Semiconductor Corporation. His experience in these organizations has allowed him to develop and refine his innovative ideas in memory technology.

Collaborations

Liu has collaborated with several professionals in his field, including Chin-Hui Lee and De-Yuan Wu. These collaborations have contributed to the advancement of his research and the successful development of his patents.

Conclusion

Chih-Cheng Liu's contributions to memory technology through his patents and collaborations highlight his role as a key innovator in the field. His work continues to influence the development of advanced memory systems.

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]