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Inventor

Chi-An Chang

Inventor
Tainan, TW

Overview

3→
Patents
2003–2018
Patent span
Human necessities
Primary field (CPC A)

Patents· 3 as inventor

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

A61Gprimary
A61GTransport, personal conveyances, or accommodation specially adapted for patients or disabled persons25%
A47CChairs13%
A61HPhysical therapy apparatus, e.g. devices for locating or stimulating reflex points in the body13%
H03FAmplifiers13%
H05KPrinted circuits13%
H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h1013%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests13%
PatentTitleYear
10,110,172Radio frequency amplifier system and heat dissipation device thereof20186,695,798'Air cushion bed with massaging device'20046,502,259'Air cushion bed with flushing device'2003

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2003–2004Based in Tainan, TW· patent location history
2018Patents assigned to DELTA ELECTRONICS INC (1)· patent assignee history
2018Based in Taoyuan, TW· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
DELTA ELECTRONICS INC12018
Locations
LocationPatentsSpan
Tainan, TW22003–2004
Taoyuan, TW12018