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Inventor

Zhang-Ming Chang

Inventor
Taichung, TW

Overview

2→
Patents
2015–2019
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.

G01Sprimary
G01SRadio direction-finding50%
G01CMeasuring distances, levels or bearings25%
G02BOptical elements, systems or apparatus25%
PatentTitleYear
10,234,283Binoculars rangefinder20198,970,824'Rangefinder'2015

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2015Patents assigned to ASIA OPTICAL CO INC (1)· patent assignee history
2015Patents assigned to CHANG ZHANG-MING (1)· patent assignee history
2015Patents assigned to LIU HUA-TANG (1)· patent assignee history
2015–2019Based in Taichung, TW· patent location history
2019Patents assigned to ASIA OPTICAL INT LTD (1)· patent assignee history
2019Patents assigned to SINTAI OPTICAL SHENZHEN CO LTD (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
ASIA OPTICAL CO INC12015
ASIA OPTICAL INT LTD12019
CHANG ZHANG-MINGself12015
LIU HUA-TANG12015
SINTAI OPTICAL SHENZHEN CO LTD12019
Locations
LocationPatentsSpan
Taichung, TW22015–2019