Inventor

Zhaojie Song

Inventor

Beijing, CN

Overview

2→

Patents

2020

Patent span

Chemistry

Primary field (CPC C)

Patents· 2 as inventor

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

C09Kprimary

C09KMaterials for miscellaneous applications, not provided for elsewhere29%

E21BEarth or rock drilling29%

C07CAcyclic or carbocyclic compounds14%

C07FAcyclic, carbocyclic or heterocyclic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur, selenium or tellurium14%

C23FNon-mechanical removal of metallic material from surface14%

PatentTitleYear

10,876,043Chelating agent for reservoir acidification and stimulating injection and its preparation method and application2020 10,800,963Pressure-reducing and injection-enhancing anti scaling agent for low-permeability water-injection well and preparation method thereof2020

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2020Patents assigned to PETROCHINA CO LTD (2)· patent assignee history

2020Based in Beijing, CN· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
PETROCHINA CO LTD	2	2020

Locations

Location	Patents	Span
Beijing, CN	2	2020