Inventor

Haiping Chang

Inventor
Qinhuangdao, CN

Overview

14→
Patents
2017–2020
Patent span
Performing operations
Primary field (CPC B)

Patents· 14 as inventor

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

B21Dprimary
B21DWorking or processing of sheet metal or metal tubes, rods or profiles without essentially removing material9%
B23QDetails, components, or accessories for machine tools, e.g. arrangements for copying or controlling9%
B24BMachines, devices, or processes for grinding or polishing9%
B60BVehicle wheels9%
G01BMeasuring length, thickness or similar linear dimensions9%
B22DCasting of metals6%
B23PMetal-working not otherwise provided for6%
G01MTesting static or dynamic balance of machines or structures6%
A46BBrushes3%
B08BCleaning in general3%

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2017–2020Patents assigned to CITIC DICASTAL CO LTD (13)· patent assignee history
2017–2020Based in Qinhuangdao, CN· patent location history
2020Patents assigned to DICASTAL NORTH AMERICA INC (1)· patent assignee history
2020Based in Hebei, CN· patent location history
2020Based in Greenville, MI, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
CITIC DICASTAL CO LTD132017–2020
DICASTAL NORTH AMERICA INC12020
Locations
LocationPatentsSpan
Qinhuangdao, CN112017–2020
Hebei, CN22020
Greenville, MI, US12020