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Hot Stamp Molded Body And Steel Sheet And Methods For Producing Same

Abstract: This hot stamp molded body has a chemical composition including in mass% not less than 0.25% but less than 0.40% of C 0.01 1.00% of Si 1.00 2.50% of Mn not more than 0.100% of P not more than 0.01000% of S and 0.0010 1.0000% of Al and has when a position located 1/4 of the thickness from the surface in the thickness direction is defined as a 1/4 depth position ?? carbides having a circle equivalent diameter of not less than 5 nm at the 1/4 depth position in a number density of not less than 20 particles/??m2.

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Notices, Deadlines & Correspondence

Patent Information

Application #
Filing Date
20 June 2025
Publication Number
36/2025
Publication Type
INA
Invention Field
METALLURGY
Status
Email
Parent Application

Applicants

NIPPON STEEL CORPORATION
6 1 Marunouchi 2 chome Chiyoda ku Tokyo 1008071

Inventors

1. SAWADA Masayoshi
c/o NIPPON STEEL CORPORATION 6 1 Marunouchi 2 chome Chiyoda ku Tokyo 1008071
2. AZUMA Masafumi
c/o NIPPON STEEL CORPORATION 6 1 Marunouchi 2 chome Chiyoda ku Tokyo 1008071
3. YABU Shohei
c/o NIPPON STEEL CORPORATION 6 1 Marunouchi 2 chome Chiyoda ku Tokyo 1008071
4. MORII Tatsuya
c/o NIPPON STEEL CORPORATION 6 1 Marunouchi 2 chome Chiyoda ku Tokyo 1008071

Specification

Documents

Application Documents

# Name Date
1 202517059202-TRANSLATIOIN OF PRIOIRTY DOCUMENTS ETC. [20-06-2025(online)].pdf 2025-06-20
2 202517059202-STATEMENT OF UNDERTAKING (FORM 3) [20-06-2025(online)].pdf 2025-06-20
3 202517059202-REQUEST FOR EXAMINATION (FORM-18) [20-06-2025(online)].pdf 2025-06-20
4 202517059202-PROOF OF RIGHT [20-06-2025(online)].pdf 2025-06-20
5 202517059202-PRIORITY DOCUMENTS [20-06-2025(online)].pdf 2025-06-20
6 202517059202-POWER OF AUTHORITY [20-06-2025(online)].pdf 2025-06-20
7 202517059202-NOTIFICATION OF INT. APPLN. NO. & FILING DATE (PCT-RO-105-PCT Pamphlet) [20-06-2025(online)].pdf 2025-06-20
8 202517059202-FORM 18 [20-06-2025(online)].pdf 2025-06-20
9 202517059202-FORM 1 [20-06-2025(online)].pdf 2025-06-20
10 202517059202-DECLARATION OF INVENTORSHIP (FORM 5) [20-06-2025(online)].pdf 2025-06-20
11 202517059202-COMPLETE SPECIFICATION [20-06-2025(online)].pdf 2025-06-20
12 202517059202-FORM 3 [10-11-2025(online)].pdf 2025-11-10