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Inventor

Yankang Zheng

Inventor
Beijing, CN

Overview

3→
Patents
1989–1992
Patent span
Chemistry
Primary field (CPC C)

Patents· 3 as inventor

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

C22Cprimary
C22CAlloys100%
PatentTitleYear
5,123,970'Method of producing an air-hardenable bainite-martensite steel'19924,957,702'Air-cooling duplex bainite-martensite steels'19904,812,182'Air-cooling low-carbon bainitic steel'1989

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1989Patents assigned to CHEN ZIUYUN (1)· patent assignee history
1989Patents assigned to FANG HONGSHENG (1)· patent assignee history
1989Patents assigned to GU JIAOYOU (1)· patent assignee history
1989Patents assigned to HE GUANGCHU (1)· patent assignee history
1989–1992Based in Beijing, CN· patent location history
1990–1992Patents assigned to UNIV QINGHUA (2)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
UNIV QINGHUA21990–1992
CHEN ZIUYUN11989
FANG HONGSHENG11989
GU JIAOYOU11989
HE GUANGCHU11989
Locations
LocationPatentsSpan
Beijing, CN31989–1992