Inventor

Yongtao Sun

Inventor

Tianjin, CN

Overview

2016

Patent span

Chemistry

Primary field (CPC C)

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

C09Kprimary

C09KMaterials for miscellaneous applications, not provided for elsewhere50%

C23FNon-mechanical removal of metallic material from surface50%

PatentTitleYear

Assembled from patent assignee/location history and declaration credentials.

2016Patents assigned to CHINA NAT OFFSHORE OIL CORP (1)· patent assignee history

2016Patents assigned to CHINA OILFIELD SERVICES LTD (1)· patent assignee history

2016Based in Tianjin, CN· patent location history

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
CHINA NAT OFFSHORE OIL CORP	1	2016
CHINA OILFIELD SERVICES LTD	1	2016

Locations

Location	Patents	Span
Tianjin, CN	1	2016