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특허 상세정보

Glass composition and substrate for information recording media comprising the same

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) C03C-003/062    C03C-003/085    C03C-003/087    B32B-017/00   
미국특허분류(USC) 501/069; 501/070; 501/072; 501/073; 428/0642; 428/0644; 428/0656; 428/410; 428/426
출원번호 US-0293992 (1999-04-19)
우선권정보 JP-0124306 (1998-04-17)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Sughrue Mion, PLLC
인용정보 피인용 횟수 : 6  인용 특허 : 10
초록

A glass composition is disclosed which has a high modulus of elasticity (Young's modulus) and a high rigidity (modulus of elasticity/specific gravity) and is capable of being effectively inhibited from bending or vibrating. Also disclosed is a substrate for information recording media, which comprises the glass composition. The glass composition comprises the following components in terms of mol %: 40 to 60% SiO2, 8 to 25% Al2O3, 2 to 20% Li2O, 0 to 5% Na2O; provided that the content of R2O (R2O=Li2O+Na2O) is from 2 to 20%, 0 to 10% TiO2, 0 to 10% ZrO2, ...

대표
청구항

1. A glass composition consisting of the following components in terms of mol %:40 to 55% SiO2, 10 to less than 20% Al2O3, 2 to 10% Li2O, 0 to 5% Na2O, provided that the content of R2O (R2O=Li2O+Na2O) is from 2 to 10%,0 to 10% ZrO2, 5 to 25% MgO, 0 to 25% CaO, and 0 to 6% SrO, provided that the content of RO (RO=MgO+CaO+SrO) is from more than 15 to 30%.

이 특허에 인용된 특허 (10)

  1. Oboodi Reza (Livingston NJ) Blazej Daniel C. (Annandale NJ). Ceramic coated metal substrates for electronic applications. USP1991034997698.
  2. Neely Homer E. (Tarentum PA). Glass composition. USP1980044199364.
  3. Yanagisawa Osamu (Yokohama JPX) Oda Kenji (Yokohama JPX) Sugimoto Naoki (Yokohama JPX) Takegawa Yoshio (Kawasaki JPX) Takada Akira (Yokohama JPX) Osada Hideyo (Yokohama JPX) Aizawa Haruo (Yokohama JP. Glass composition and substrate for plasma display. USP1997055631195.
  4. Maeda Kei (Yokohama JPX) Nakao Yasumasa (Yokohama JPX) Kushitani Hideki (Yokohama JPX) Ito Setsuro (Yokohama JPX). Glass composition for a substrate, and substrate for plasma display made thereof. USP1997025599754.
  5. Kuroda Yasunao,JPX. Glass substrate for magnetic disks. USP1999055902665.
  6. Kawaguchi Toshiyasu,JPX ; Miyazaki Seiji,JPX. Glass substrate for plasma display panel. USP1999035888917.
  7. Taguchi Tomoyuki,JPX ; Kawai Hideki,JPX ; Ohara Tohru,JPX ; Kuriyama Ikuo,JPX ; Wakabayashi Hajimu,JPX ; Nakajima Sadao,JPX. Glass-ceramic magnetic disk substrate. USP1998035726108.
  8. Zou Xuelu,JPX ; Hashimoto Kazuaki,JPX. Information recording substrate and information recording medium prepared from the substrate. USP1999125997977.
  9. Rodek Erich (Mainz DEX) Kiefer Werner (Mainz DEX) Siebers Friedrich (Mainz DEX). Lead-and cadmium-free glass composition for glazing, enameling and decorating glass. USP1997055633090.
  10. Beall George H. (Big Flats NY). Mica-spodumene glass-ceramic articles. USP1976123997352.