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Inventor

Keng-Li Chang

Inventor
Mountain View, CA, US

Overview

2→
Patents
2020–2021
Patent span
Physics
Primary field (CPC G)

Patents· 2 as inventor

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

F21Kprimary
F21KNon-electric light sources using luminescence7%
G02BOptical elements, systems or apparatus7%
G03FPhotomechanical production of textured or patterned surfaces, e.g. for printing, for processing of semiconductor devices7%
G06FElectric digital data processing7%
G06QInformation and communication technology [ict] specially adapted for administrative, commercial, financial, managerial or supervisory purposes7%
G06VImage or video recognition or understanding7%
G09GArrangements or circuits for control of indicating devices using static means to present variable information7%
G11CStatic stores7%
H01SDevices using the process of light amplification by stimulated emission of radiation [laser] to amplify or generate light7%
H04LTransmission of digital information, e.g. telegraphic communication7%
PatentTitleYear
10,929,881Pre-feature promotion system202110,592,448Master-slave system, command execution method and data access method with use of serial peripheral interface (SPI)2020

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2020Patents assigned to GUANGZHOU TYRAFOS SEMICONDUCTOR TECH CO LTD (1)· patent assignee history
2020Based in Taipei, TW· patent location history
2021Patents assigned to GROUPON INC (1)· patent assignee history
2021Based in Mountain View, CA, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
GROUPON INC12021
GUANGZHOU TYRAFOS SEMICONDUCTOR TECH CO LTD12020
Locations
LocationPatentsSpan
Mountain View, California, US12021
Taipei, TW12020