Inventor
Quanhui HE
Inventor
CN
Overview
Patents· 1 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C09Bprimary
C09BOrganic dyes or closely-related compounds for producing dyes, e.g. pigments50%
D06PDyeing or printing textiles50%
Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2026Patents assigned to SHANGHAI KEHUA DYESTUFF IND CO LTD (1)· patent assignee history
2026Patents assigned to ZHEJIANG KEYONG CHEMICAL CO LTD (1)· patent assignee history
2026Patents assigned to ZHEJIANG LONGSHENG GROUP CO (1)· patent assignee history
2026Based in CN· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| SHANGHAI KEHUA DYESTUFF IND CO LTD | 1 | 2026 |
| ZHEJIANG KEYONG CHEMICAL CO LTD | 1 | 2026 |
| ZHEJIANG LONGSHENG GROUP CO | 1 | 2026 |
Locations
| Location | Patents | Span |
|---|---|---|
| CN | 1 | 2026 |