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Inventor

Yen-Cheng Cheng

Inventor
Hsinchu, TW

Overview

13→
Patents
1994–2021
Patent span
Electricity
Primary field (CPC H)

Patents· 13 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

H03Kprimary
H03KPulse technique35%
G09GArrangements or circuits for control of indicating devices using static means to present variable information18%
H03FAmplifiers18%
H03MCoding12%
B22DCasting of metals6%
C22CAlloys6%
G05FSystems for regulating electric or magnetic variables6%
PatentTitleYear
11,028,465Low-cost lead-free dezincification-resistant brass alloy for casting202110,848,149Channel circuit of source driver and operation method thereof202010,756,749Digital to analog conversion device and digital to analog conversion circuit thereof202010,673,421Level shifter device and operation method thereof202010,418,998Level shifter circuit and method thereof201910,367,504Low power negative voltage level shifter20199,209,755'Operational amplifying device with auto-adjustment output impedance'20159,209,823'Decoder level shifter device and digital to analog converter using the same'20158,933,755'Unity-gain buffer with enhanced slew rate'20158,902,211'Control device and control method for display panel'20148,692,618'Positive and negative voltage input operational amplifier set'20148,339,178'Level shifter and related apparatus'20125,350,008'Mold assembly for thermo-mold continuous casting'1994

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1994–2020Based in Hsinchu, TW· patent location history
2012–2015Patents assigned to ORISE TECHNOLOGY CO LTD (5)· patent assignee history
2012–2014Patents assigned to CHENG YEN-CHENG (2)· patent assignee history
2012Patents assigned to HUANG CHIEN-CHUN (1)· patent assignee history
2015Patents assigned to FOCALTECH SYSTEMS CO LTD (2)· patent assignee history
2019–2020Patents assigned to NOVATEK MICROELECTRONICS CORP (5)· patent assignee history
2019–2020Based in Hsinchu County, TW· patent location history
2020Based in Zhubei City, TW· patent location history
2021Based in Xiamen, CN· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
NOVATEK MICROELECTRONICS CORP52019–2020
ORISE TECHNOLOGY CO LTD52012–2015
CHENG YEN-CHENGself22012–2014
FOCALTECH SYSTEMS CO LTD22015
HUANG CHIEN-CHUN12012
Locations
LocationPatentsSpan
Hsinchu, TW81994–2020
Hsinchu County, TW32019–2020
Xiamen, CN12021
Zhubei City, TW12020