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Inventor

Zepu Cheng

Inventor
Beijing, CN

Overview

1→
Patents
2016
Patent span
Chemistry
Primary field (CPC C)

Patents· 1 as inventor

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

C07Cprimary
C07CAcyclic or carbocyclic compounds50%
C09KMaterials for miscellaneous applications, not provided for elsewhere50%
PatentTitleYear
9,528,042'Drilling fluid additive composition and super high temperature super high density clay-free oil-in-water drilling fluid'2016

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2016Patents assigned to CHINA UNIV OF PETROLEUM (BEIJING) (1)· patent assignee history
2016Based in Beijing, CN· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
CHINA UNIV OF PETROLEUM (BEIJING)12016
Locations
LocationPatentsSpan
Beijing, CN12016