Hot-pressed member
Granted 4 Mar 2014 · 6 office actions
Assignee: JFE Steel Corporation
Law firm: Law firm · Log in to unlock
Attorney: Attorney · Log in to unlock
Inventors: Seiji Nakajima, Shinji Ootsuka, Hiroyuki Masuoka, Hiroki Nakamaru +1 · Examiner: Michael La Villa · AU 1784 · TC 1700
Life of the patent
16 dated eventsAbstract
A hot-pressed member includes a steel sheet, a Ni-diffusion region present in a surface layer of the steel sheet, and an intermetallic compound layer and a ZnO layer which are provided in order on the Ni-diffusion region, the intermetallic compound layer corresponding to a γ phase present in a phase equilibrium diagram of a Zn—Ni alloy, wherein a spontaneous immersion potential indicated in a 0.5 M NaCl aqueous air-saturated solution at 25° C.±5° C. is −600 to −360 mV based on a standard hydrogen electrode.
Claims
4 · 1 independent · depth 2Classifications
11 codes- B32B15/04
- B32B15/18
Claim changes
SoonSee which claims were amended, added or cancelled during examination, with every added and removed word marked.
The published claims of this patent are not paired with the granted ones in what we hold.
File wrapper
See the full prosecution history — every USPTO and applicant action on this file, in order.
Log in to unlockTerm & fees
See the term timeline — pendency span, in-force span, the maintenance fees paid and both computed expiry dates.
Log in to unlockPriority chain
1 priority documents›Priority documents — 1
| Type | Document | Date |
|---|---|---|
| related publication | US 20120321903 A1 | 20 Dec 2012 |
Validity challenges
See the validity challenges on record — reexaminations, IPRs and PGRs, with their institution decisions and outcomes.
Log in to unlockCitations
See every patent this one cites and every patent that cites it back — publication, assignee, and how each one was found.
Log in to unlock