Inventor

Jianliang Duan

Inventor

Tangshan, CN

Overview

2018–2021

Patent span

Chemistry

Primary field (CPC C)

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

E21Bprimary

E21BEarth or rock drilling11%

B08BCleaning in general5%

B21CManufacture of metal sheets, wire, rods, tubes, profiles or like semi-manufactured products otherwise than by rolling5%

B21DWorking or processing of sheet metal or metal tubes, rods or profiles without essentially removing material5%

B23KSoldering or unsoldering5%

B23PMetal-working not otherwise provided for5%

C09KMaterials for miscellaneous applications, not provided for elsewhere5%

C21DModifying the physical structure of ferrous metals5%

C22CAlloys5%

C22FChanging the physical structure of non-ferrous metals and non-ferrous alloys5%

PatentTitleYear

Assembled from patent assignee/location history and declaration credentials.

2018–2021Patents assigned to SHINDA TANGSHAN CREATIVE OIL & GAS EQUIP CO LTD (2)· patent assignee history

2018Patents assigned to HEBEI HUATONG WIRES & CABLES GROUP CO LTD (1)· patent assignee history

2018Based in Hebei, CN· patent location history

2021Based in Tangshan, CN· patent location history

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
SHINDA TANGSHAN CREATIVE OIL & GAS EQUIP CO LTD	2	2018–2021
HEBEI HUATONG WIRES & CABLES GROUP CO LTD	1	2018

Locations

Location	Patents	Span
Tangshan, CN	1	2021
Hebei, CN	1	2018