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For the Inventor, By the Inventor

Taipei, Taiwan

Chih-Wei Chang

This inventor holds 18 USPTO granted patents and 15 published patent applications and 1 EPO patent, primarily in Optical Touch Technology. Top assignees: Fih (Hong Kong) Limited, Asia Vital Components Co., Ltd., Academia Sinica. Active years: 2005-2025.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Chih-Wei Chang. Retrieved from https://idiyas.com/inventor/chih-wei-chang-o8eitzjl

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

Calculating rank
USPTO Granted Patents = 18 

% Patents Active = 27.8

 

Average Co-Inventor Count = 1.8

ph-index = 3

Forward Citations = 24(Granted Patents)


Location History:

  • Taipei Hsien, TW (2005 - 2013)
  • Shindian, TW (2013)
  • New Taipei, TW (2014 - 2024)

Company Filing History:

goldMedal7 out of 1,166 
 
Fih (Hong Kong) Limited
 patents
silverMedal3 out of 535 
 
Asia Vital Components Co., Ltd.
 patents
bronzeMedal2 out of 728 
 
Academia Sinica
 patents
4. 2 out of 19,792 
 
Hon Hai Precision Industry Co., Ltd.
 patents
5. 2 out of 5 
 
Hongfujin Precision Electrons (Yantai) Co., Ltd.
 patents
6. 2 out of 110 
 
Micro-Star Int'l Co., Limited.
 patents
7. 2 out of 860 
 
Shenzhen Futaihong Precision Industry Co., Ltd.
 patents
8. 1 out of 71 
 
Acbel Polytech Inc.
 patents
9. 1 out of 147 
 
Scienbizip Consulting(shenzhen)co., Ltd.
 patents
where one patent can have more than one assignee

Years Active: 2005-2025

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Areas of Expertise:
Optical Touch Device
Portable Electronic Device
Image-Guided Illumination
Wireless Charging
Cameral Module
Dustproof Structure
Foam Assembly
Optical Touch Module
Elastic Sheet Structure
Low Noise Optical Disk Drive
Key Structure
Power Supply Assembly
18 patents (USPTO):Explore Patents
1. 12489280 - Power supply and wire securing assembly thereof (2025-12-02),
2. 11869729 - Key structure (2024-01-09),
3. 11789251 - Microscope-based system and method for image-guided microscopic illumination (2023-10-17),
4. 11670469 - Key structure providing adjustability of pressing force and rebound force, and key device using key structure (2023-06-06),
5. 11265449 - Microscope-based system and method for image-guided microscopic illumination (2022-03-01),
6. 9577451 - Holder for portable electronic device (2017-02-21),
7. 9404625 - Optical touch device (2016-08-02),
8. 9345152 - Foam assembly and method for manufacturing the same, and electronic device using the foam assembly (2016-05-17),
9. 9172268 - Portable electronic device and wireless charging device (2015-10-27),
10. 9057486 - Optical touch device (2015-06-16),
11. 9052776 - Optical touch module and optical touch component structure (2015-06-09),
12. 8885098 - Cameral module with sealing structure for portable electronic devices (2014-11-11),
13. 8541697 - Dustproof structure and electronic device employing the same (2013-09-24),
14. 8519279 - Portable electronic device with interface (2013-08-27),
15. 8467174 - Portable electronic device with fastening structure (2013-06-18),

Title: Innovations of Chih-Wei Chang

Introduction

Chih-Wei Chang is a prominent inventor based in Taipei, Taiwan. He has made significant contributions to the field of technology, holding a total of 17 patents. His work focuses on innovative solutions that enhance functionality and efficiency in various applications.

Latest Patents

One of his latest patents is a key structure that includes an upper cover, a movable element, an elastic element, a pressure sensing module, a base, and a circuit board. The pressure sensing module is arranged on the base and is electrically connected to the circuit board. This module includes a pressure sensing element that contacts the movable element when pressed, monitoring the pressure and converting it into a pressure signal. Additionally, the conducting element transmits the pressure signal to the circuit board. Another notable patent is a microscope-based system and method for image-guided microscopic illumination. This system allows a processing module to control an imaging assembly, enabling a camera to acquire images of a sample in multiple fields of view. The images are processed in real-time to determine the coordinate information of an interested region, allowing for precise illumination of the sample.

Career Highlights

Chih-Wei Chang has worked with notable companies such as FIH (Hong Kong) Limited and Asia Vital Components Co., Ltd. His experience in these organizations has contributed to his expertise in developing innovative technologies.

Collaborations

He has collaborated with talented individuals, including Bhoopal Ponnuvelu and Cheng-Nan Lien, further enhancing his work through shared knowledge and skills.

Conclusion

Chih-Wei Chang's contributions to technology through his patents and collaborations highlight his role as a significant inventor in the field. His innovative solutions continue to impact various industries positively.

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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