Patent SG-11201901205X-A (SG)
Title: Hard gold alloy with zirconium, titanium and magnesium for jewelry manufacture
Inventor: PETHE SUBODH
IPC: C22F1/14
Filed: 2017-06-28
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property MD 1101111 0 DOI HIM 011101 0 IIIIIIIIIHIIIIIIIIIIIIIIIIIIIIIIIIIIIIIHIIIIIIHI Organization International Bureau (10) International Publication Number (43) International Publication Date ......0\" WO 2018/178998 Al 04 October 2018 (04.10.2018) W I PO I PCT (51) International Patent Classification: C22C 5/02 (2006.01) A44C 27/00 (2006.01) Declarations under Rule 4.17: C22F 1/14 (2006.01) — as to the identity of the inventor (Rule 4.17(i)) — as to applicant's entitlement to apply for and be granted a (21) International Application Number: patent (Rule 4.17(0 PCT/IN2017/050266 — as to the applicant's entitlement to claim the priority of the (22) International Filing Date: earlier application (Rule 4.17(iii)) 28 June 2017 (28.06.2017) Published: — (25) Filing Language: English with international search report (Art. 21(3)) (26) Publication Language: English (30) Priority Data: 201721010746 27 March 2017 (27.03.2017) IN (72) Inventor; and (71) Applicant: PETHE, Subodh [IN/IN]; 110 Vikas Paradise, L.B.S. Marg, Mulund (West], Mumbai 400080 (IN). (72) Inventor: PARAB, Sharad; 110 Vikas Paradise, L.B.S. Marg, Mulund (West], Mumbai 400080 (IN). (74) Agent: KHER, Sanjay; 15AB, 3rd Floor, Meadow House, Tamarind Lane, Fort, Mumbai 400001 (IN). Designated States (unless otherwise indicated, for every kind of national protection available): 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. (81) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (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), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG). (84) ,_ 1 (54) Title: HARD GOLD ALLOY WITH ZIRCONIUM, TITANIUM AND MAGNESIUM FOR JEWELRY MANUFACTURE (57) : A high purity gold alloy alloyed with a combination of metals or at least two metals out of zirconium, Titanium and GO Magnesium for jewellery manufacture and containing 75-99.5% of Gold, 0.01-1.5% of Zirconium, 0.01-1.5% of Magnesium, 0.01-1.5% 610 \ of Titanium, 0-24.98% of Copper, and 0-24.98% of Zinc and 0-24.98% of Silver by weight. Gold-Zirconium, Magnesium, Titanium 56 Gold alloy has 75-260 Vickers hardness and specific gravity 14-19 g/cc. It has more than 1.25-2 times high springiness at applied load/ IN pressure and is compatible in terms of the color retention properties thereof by human eye, when compared with the conventional gold 1-1 --.... alloys. The 3-metal combination (Zr+Ti+Mg) Gold alloy has RICH YELLOW colour, while out of the 2-metal combinations, (Zr+Ti) Ot Gold alloy has a WHITISH YELLOW colour, (Zr+Mg) Gold alloy has a GREENISH YELLOW colour and (Mg+Ti) Gold alloy has 1-1 © a \"PALE YELLOW\" colour. Gold alloy shows lower wear during polishing. Gold alloy includes 18-24 Caratage suitable for jewellery ei manufacture due to its lower specific gravity and cost-effectiveness. C