(12) International Application Status Report

Received at International Bureau: 18 December 2019 (18.12.2019)

Information valid as of: 14 September 2020 (14.09.2020)

Report generated on: 23 September 2020 (23.09.2020)

(10) Publication number: (43) Publication date: (26) Publication language:
WO 2020/11646411 June 2020 (11.06.2020) Japanese (JA)

(21) Application number: (22) Filing date: (25) Filing language:
PCT/JP2019/04727103 December 2019 (03.12.2019) Japanese (JA)

(31) Priority number(s): (32) Priority date(s): (33) Priority status:
2018-226858 (JP)03 December 2018 (03.12.2018) Priority document received (in compliance with PCT Rule 17.1)

(51) International Patent Classification:
C22C 9/04 (2006.01); C22F 1/00 (2006.01); C22F 1/08 (2006.01)

(71) Applicant(s):
JX NIPPON MINING & METALS CORPORATION [JP/JP]; 1-2,Otemachi 1-chome,Chiyoda-ku, Tokyo 1008164 (JP) (for all designated states)

(72) Inventor(s):
TAKAHATA,Masahiro; c/o Isohara Works,JX Nippon Mining & Metals Corporation,187-4,Usuba,Hanakawa-cho,Kitaibaraki-shi, Ibaraki 3191535 (JP)

(74) Agent(s):
AYAFUNE INTERNATIONAL PATENTS & TRADEMARKS PATENT PROFESSIONAL CORPORATION; TAF Kyobashi Bldg. 5th Floor, 19-4, Kyobashi 1-chome, Chuo-ku, Tokyo 1040031 (JP)

(54) Title (EN): CORROSION-RESISTANT CuZn ALLOY
(54) Title (FR): ALLIAGE CuZn RÉSISTANT À LA CORROSION
(54) Title (JA): 耐食性CuZn合金

(57) Abstract:
(EN): Provided is a corrosion-resistant CuZn alloy, in which: the Zn content is 36.8 to 56.5 mass% and the balance is Cu and inevitable impurities; and the β-phase surface area percentage is 99.9% or greater.
(FR): L'invention concerne un alliage CuZn résistant à la corrosion, dans lequel : la teneur en Zn est comprise entre 36,8 et 56,5 % en masse et le reste est du Cu et des impuretés inévitables; et le pourcentage de surface de phase β est égal ou supérieur à 99,9 %.
(JA): Zn含有量が36.8~56.5質量%であり、残余がCu及び不可避不純物であって、β相の面積率が99.9%以上である、耐食性CuZn合金を提供する。

International search report:
Received at International Bureau: 16 March 2020 (16.03.2020) [JP]

International Report on Patentability (IPRP) Chapter II of the PCT:
Chapter II demand received: 02 June 2020 (02.06.2020)

(81) Designated States:
AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
European Patent Office (EPO) : AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR
African Intellectual Property Organization (OAPI) : BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG
African Regional Intellectual Property Organization (ARIPO) : BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW
Eurasian Patent Organization (EAPO) : AM, AZ, BY, KG, KZ, RU, TJ, TM