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Machine translation
1. (WO2004009504) GLASS CAPABLE OF BEING MACHINED BY LASER
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2004/009504    International Application No.:    PCT/JP2003/009227
Publication Date: 29.01.2004 International Filing Date: 22.07.2003
IPC:
C03C 3/076 (2006.01), C03C 3/089 (2006.01), C03C 23/00 (2006.01)
Applicants: NIPPON SHEET GLASS COMPANY, LIMITED [JP/JP]; 7-28, Kitahama 4-chome, Chuo-ku, Osaka-shi, Osaka 541-8559 (JP) (For All Designated States Except US).
KOYO, Hirotaka [JP/JP]; (JP) (For US Only).
TSUNETOMO, Keiji [JP/JP]; (JP) (For US Only)
Inventors: KOYO, Hirotaka; (JP).
TSUNETOMO, Keiji; (JP)
Agent: IKEUCHI SATO & PARTNER PATENT ATTORNEYS; 26th Floor, OAP TOWER, 8-30, Tenmabashi 1-chome, Kita-ku, Osaka-shi, Osaka 530-6026 (JP)
Priority Data:
2002-214983 24.07.2002 JP
Title (EN) GLASS CAPABLE OF BEING MACHINED BY LASER
(FR) VERRE POUVANT ÊTRE USINÉ PAR LASER
(JA) レーザ加工用ガラス
Abstract: front page image
(EN)A glass capable of being machined by means of a laser through the ablation or evaporation by the laser beam energy absorbed, characterized in that it has a composition satisfying the following requirements: 60 ≤ SiO2 + B2O3 ≤ 79 mol %, 5 ≤ Al2O3 + TiO2 ≤ 20 mol % and 5 ≤ Li2O + Na2O + K2O + Rb2O + Cs2O + MgO + CaO + SrO + BaO ≤ 20 mol %, with the proviso that 5 ≤ TiO2 ≤ 20 mol %. The glass capable of being machined by a laser exhibits a lowered threshold value for laser machining and also a reduced thermal expansion coefficient.
(FR)L'invention concerne un verre pouvant être usiné au moyen d'un laser, par ablation ou évaporation produite par l'énergie absorbée du faisceau laser, et qui est caractérisé en ce qu'il répond aux conditions suivantes : 60 $m(F) SiO2 + B2O3 $m(F) 79 % molaire, 5 $m(F) Al2O3 + TiO2 $m(F) 20 % molaire et 5 $m(F) Li2O + Na2O + K2O + Rb2O + Cs2O + MgO + CaO + SrO + BaO $m(F) 20 % molaire, à condition que 5 $m(F) TiO2 $m(F) 20 % molaire. Ce verre pouvant être usiné par laser présente une valeur de seuil réduite d'usinage laser, ainsi qu'un coefficient d'expansion thermique réduit.
(JA)not available
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, KE, KG, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RU, SC, SD, SE, SG, SK, SL, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, YU, ZA, ZM, ZW.
African Regional Intellectual Property Organization (GH, GM, KE, LS, MW, MZ, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IT, LU, MC, NL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)