High-strength hot-dip galvannealed steel sheet with superior phosphatability

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 8697252
APP PUB NO 20100040906A1
SERIAL NO

12520105

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

Disclosed is a hot-dip galvannealed steel sheet that stably exhibits satisfactory phosphatability. It is a high-strength hot-dip galvannealed steel sheet which includes a base steel sheet and, arranged on at least one side thereof, an Fe—Zn alloyed galvanized layer. The base steel sheet contains 0.03% to 0.3% of carbon, 0.5% to 3.0% of silicon, and 0.5% to 3.5% of manganese, with the remainder including iron and inevitable impurities. The Fe—Zn alloyed galvanized layer has a concentration of silicon present as an oxide of [Si] (percent by mass) and a concentration of manganese present as an oxide of [Mn] (percent by mass), and these parameters satisfy the following conditions (1) and (2):

description='In-line Formulae' end='lead'[Si]≦0.25  (1)description='In-line Formulae' end='tail'

description='In-line Formulae' end='lead'[Mn]/[Si]≦3.0  (2).description='In-line Formulae' end='tail'

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

  • KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.);KOBE STEEL, LTD.

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Irie, Hiroshi Kakogawa, JP 25 171
Yoshida, Takatoshi Kakogawa, JP 15 183

Cited Art Landscape

Load Citation

Patent Citation Ranking

Forward Cite Landscape

Load Citation

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
11.5 Year Payment $7400.00 $3700.00 $1850.00 Oct 15, 2025
Fee Large entity fee small entity fee micro entity fee
Surcharge - 11.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge after expiration - Late payment is unavoidable $700.00 $350.00 $175.00
Surcharge after expiration - Late payment is unintentional $1,640.00 $820.00 $410.00