Inventor
Ning Xiuzhen
Inventor
Shenyang, CN
Overview
Patents· 2 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C10Gprimary
C10GCracking hydrocarbon oils50%
F28FDetails of heat-exchange and heat-transfer apparatus, of general application50%
PatentTitleYear
6,530,422'Heat exchanger tube, a method for making the same, and a cracking furnace or other tubular heat furnaces using the heat exchanger tube'20036,481,492'Heat exchanger tube, a method for making the same, and a cracking furnace or other tubular heat furnaces using the heat exchanger tube'2002Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2002Patents assigned to CHINA PETRO CHEMICAL CORP AND (1)· patent assignee history
2002–2003Based in Shenyang, CN· patent location history
2003Patents assigned to CHINA PETRO CHEMICAL CORP BEIJ (1)· patent assignee history
2003Patents assigned to CHINA PETROCHEMICAL CORP (1)· patent assignee history
2003Patents assigned to INST OF METAL RES SCIENCE ACAD (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| CHINA PETRO CHEMICAL CORP AND | 1 | 2002 |
| CHINA PETRO CHEMICAL CORP BEIJ | 1 | 2003 |
| CHINA PETROCHEMICAL CORP | 1 | 2003 |
| INST OF METAL RES SCIENCE ACAD | 1 | 2003 |
Locations
| Location | Patents | Span |
|---|---|---|
| Shenyang, CN | 2 | 2002–2003 |