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Hsinchu, Taiwan

Waltop International Corporation

USPTO Granted Patents = 59

% Expired Patents = 27.1

Trademarks = 3

Forward Citations = 162

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48 inventors (with patents filed for the assignee):

Chia-Jui Yeh (21 out of 32 patents)

Yi-Chih Chang (8 out of 8 patents)

Chung-Fuu Mao (5 out of 5 patents)

4. Chung-Wen Hsu (5 out of 9 patents)

5. A-Li Wong (4 out of 6 patents)

6. Yun-Hsiang Yeh (4 out of 24 patents)

7. Chien-Chia Lien (4 out of 4 patents)

8. Wei-Chou Chen (4 out of 19 patents)

9. Ying Hwa Tang (3 out of 3 patents)

10. Chia-Te Huang (3 out of 3 patents)

11. Ying-Hwa Tang (2 out of 2 patents)

12. Hsin-Chiang Ho (2 out of 2 patents)

13. Yu Chiehmr Ho (2 out of 2 patents)

14. Chung Fuu Mao (2 out of 2 patents)

15. Chia Jui Yeh (2 out of 2 patents)

Core Competencies:

Capacitive Stylus

Signal Transmission

Tilt Detection

Electromagnetic Input

Portable Electronic Device

Handwriting Input

Touch Input Device

Rechargeable Stylus

Inductive System

Magnetic Capacitive Stylus

Electromagnetic Sensor

Stylus Structure

59 patents: Sort by Forward Citations

1. 11042231 - Stylus structure for transmitting a color signal (2021-06-22),

2. 11023057 - Stylus structure having a barrier unit for contacting with a trigger component (2021-06-01),

3. 10895930 - Message erasing device and message erasing system (2021-01-19),

4. 10613647 - Portable electronic device and stylus thereof (2020-04-07),

5. 10599272 - Portable electronic device and active capacitive stylus thereof (2020-03-24),

6. 10564737 - Capacitive stylus with eraser (2020-02-18),

7. 10429956 - Capacitive stylus with detachable eraser (2019-10-01),

8. 10386944 - Capacitive stylus providing signals for tilt and orientation detection (2019-08-20),

9. 10082895 - Capacitive stylus and touch control apparatus applying synchronized time difference signal transmitting method (2018-09-25),

10. 10082894 - Synchronized time difference signal transmitting method and capacitive stylus as well as touch input apparatus applying this method (2018-09-25),

11. 10042444 - Capacitive stylus with two transmit electrodes (2018-08-07),

12. 9983698 - Capacitive stylus signal transmitting and application method and capacitive stylus applying this method (2018-05-29),

13. 9965060 - Capacitive stylus and tilt angle detecting method thereof (2018-05-08),

14. 9766687 - Capacitive stylus with power saving apparatus (2017-09-19),

15. 9751200 - Core disassembling device (2017-09-05),

Company Overview

Waltop International Corporation, based in Hsinchu, Taiwan, specializes in the development and manufacturing of advanced capacitive stylus technology. The company focuses on innovative solutions for signal transmission, tilt detection, and electromagnetic input, catering to the needs of portable electronic devices. Waltop's expertise extends to handwriting and touch input devices, offering rechargeable stylus options that enhance user interaction and productivity across various applications in the digital landscape.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

59 Patents

#88 in Hsinchu

#355 in Taiwan

#12,232 in the World

Hsinchu, Taiwan

Waltop International Corporation

Forward Citations = 162

48 inventors:

Chia-Jui Yeh (21 out of 32 patents)

Yi-Chih Chang (8 out of 8 patents)

Chung-Fuu Mao (5 out of 5 patents)

4. Chung-Wen Hsu (5 out of 9 patents)

5. A-Li Wong (4 out of 6 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Waltop International Corporation. Retrieved from https://idiyas.com/company/waltop-international

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

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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