HOT-PRESSING STEEL PLATE, PRESS-MOLDED ARTICLE, AND METHOD FOR MANUFACTURING PRESS-MOLDED ARTICLE
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United States of America Patent
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N/A
Issued Date -
Aug 4, 2016
app pub date -
Sep 10, 2013
filing date -
Sep 10, 2013
priority date (Note) -
Published
status (Latency Note)
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Importance

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Abstract
A steel sheet for hot-pressing includes a specific chemical component composition. In the steel sheet, an average equivalent-circle diameter of a Ti-containing precipitate having an equivalent-circle diameter of 30 nm or less among Ti-containing precipitates contained in the steel sheet is 3 nm or more. In the steel, a precipitated Ti amount and a total Ti amount in a steel satisfy the relationship of: Precipitated Ti amount (mass %)−3.4[N]≧0.5×[(total Ti amount (mass %))−3.4[N]] in which [N] indicates the content (mass %) of N in the steel. In the steel sheet, a ferrite fraction in a metal microstructure is 30 area % or more.
First Claim
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Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL LTD ) | 2-4 WAKINOHAMA-KAIGANDORI 2-CHOME CHUO-KU KOBE-SHI HYOGO 6518585 JAPAN |
International Classification(s)

- 2013 Application Filing Year
- C21D Class
- 530 Applications Filed
- 450 Patents Issued To-Date
- 84.91 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
IKEDA, Shushi | Aichi, JP | 44 | 570 |
# of filed Patents : 44 Total Citations : 570 | |||
MURAKAMI, Toshio | Hyogo, JP | 98 | 1077 |
# of filed Patents : 98 Total Citations : 1077 | |||
NAITOU, Junya | Hyogo, JP | 36 | 203 |
# of filed Patents : 36 Total Citations : 203 | |||
OKITA, Keisuke | Hyogo, JP | 46 | 572 |
# of filed Patents : 46 Total Citations : 572 |
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Patent Citation Ranking
- 16 Citation Count
- C21D Class
- 94.58 % this patent is cited more than
- 9 Age
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