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Inventor

Jer-Yuh Liu

Inventor
Qingdao, CN

Overview

2→
Patents
2013–2021
Patent span
Human necessities
Primary field (CPC A)

Patents· 2 as inventor

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

A61Kprimary
A61KPreparations for medical, dental or toiletry purposes25%
A61PSpecific therapeutic activity of chemical compounds or medicinal preparations25%
C08FMacromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds25%
C09KMaterials for miscellaneous applications, not provided for elsewhere25%
PatentTitleYear
11,034,876Calcium-resistant zwitterionic polymer, preparation method and application thereof, and water-based drilling fluid containing polymer as dispersant20218,409,632'Product containing extract from Zanthoxylum avicennae (Lam.) DC., and preparation process and use thereof'2013

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2013Patents assigned to HUANG CHIH-YANG (1)· patent assignee history
2013Patents assigned to LIU JER-YUH (1)· patent assignee history
2013Patents assigned to TRAN DUC-DUNG (1)· patent assignee history
2013Patents assigned to UNIV CHINA MEDICAL (1)· patent assignee history
2013Based in Taichung, TW· patent location history
2021Patents assigned to UNIV CHINA PETROLEUM BEIJING (1)· patent assignee history
2021Based in Qingdao, CN· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HUANG CHIH-YANG12013
LIU JER-YUHself12013
TRAN DUC-DUNG12013
UNIV CHINA MEDICAL12013
UNIV CHINA PETROLEUM BEIJING12021
Locations
LocationPatentsSpan
Qingdao, CN12021
Taichung, TW12013