P

Inventor

TSAI CHANG-YU

TW15 patents
⚠️ This page may combine multiple inventors who share the name “TSAI CHANG-YU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

TSAI CHANG YU

6 patents
US12064863B1Aug 20, 2024

Tool box structure

TSAI CHANG YU11 citations83
US12528178B1Jan 20, 2026

Tool box assembly

TSAI CHANG YU1 citations61
US11787018B2Oct 17, 2023

Rotation wrench

TSAI CHANG YU2 citations60
US12491567B2Dec 9, 2025

Hand tool holding structure

TSAI CHANG YU0 citations49
US12455153B2Oct 28, 2025

Tape structure

TSAI CHANG YU0 citations49
US12311525B2May 27, 2025

Hand tool holder structure

TSAI CHANG YU0 citations49

EPISTAR CORP

6 patents
US10971652B2Apr 6, 2021

Semiconductor device comprising electron blocking layers

EPISTAR CORP6 citations81
US11056434B2Jul 6, 2021

Semiconductor device having specified p-type dopant concentration profile

EPISTAR CORP6 citations80
US11600746B2Mar 7, 2023

Semiconductor device comprising electron blocking layer

EPISTAR CORP4 citations71
US12439734B2Oct 7, 2025

Semiconductor device comprising electron blocking layer

EPISTAR CORP0 citations59
US12300764B2May 13, 2025

Semiconductor device comprising electron blocking layer

EPISTAR CORP0 citations59
US11688690B2Jun 27, 2023

Semiconductor device comprising electron blocking layer

EPISTAR CORP0 citations59

QISDA CORP

2 patents
US10731833B2Aug 4, 2020

Illumination device

QISDA CORP4 citations71
US11629845B2Apr 18, 2023

Clamp lamp

QISDA CORP0 citations50

QISDA (SUZHOU) CO LTD

1 patent
US9826592B2Nov 21, 2017

Lamp having illumination modules with different percentage of luminance adjustment

QISDA (SUZHOU) CO LTD0 citations48