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11. 发明授权

US4331768A Earthenware-appearing glazes for dinnerware 失效
标题翻译：陶器出现的釉面餐具
公开(公告)号：US4331768A
公开(公告)日：1982-05-25
申请号：US243460
申请日：1981-03-13
申请人： David C. Boyd , Kun-Er Lu , Walter H. Tarcza
发明人： David C. Boyd , Kun-Er Lu , Walter H. Tarcza
IPC分类号： C03C8/10 , C03C8/12 , C03C8/14 , C03C8/20 , C03C1/06 , C03C3/10
CPC分类号： C03C8/12 , C03C8/10 , C03C8/14 , C03C8/20
摘要： This invention is directed to the production of glazes exhibiting an earthenware appearance which are particularly suitable for decorating ceramic dinnerware. The glaze composition consists essentially of about 4-8% by weight SnO.sub.2 and 4-8% by weight TiO.sub.2, the total SnO.sub.2 +TiO.sub.2 being about 10-14%, and about 0.025-0.04% by weight MnO.sub.2 incorporated into a base frit consisting essentially, as analyzed in weight percent on the oxide basis, of about______________________________________ SiO.sub.2 37-49 Al.sub.2 O.sub.3 4-7 B.sub.2 O.sub.3 6.5-11 ZrO.sub.2 0-1.75 Na.sub.2 O 1.75-3.5 K.sub.2 O 0.75-2.5 PbO 21-32 CdO 0-0.75 CaO 1-9 TiO.sub.2 0-0.35 F 0-0.6 ______________________________________ The fired glaze contains crystallites of rutile and cassiterite.
摘要翻译：本发明涉及生产特别适用于装饰陶瓷餐具的陶器外观的釉料。釉料组合物基本上由约4-8重量％的SnO 2和4-8重量％的TiO 2组成，总SnO 2 + TiO 2为约10-14重量％，和约0.025-0.04重量％基本上按照以氧化物为基准的重量百分比分析的约-SiO 2 37-49-Al 2 O 3 4-7 -B 2 O 3 6.5-11-ZrO 2 0-1.75 -Na 2 O 1.75-3.5-K 2 O 0.75-2.5 -PbO 21-32 - CdO 0-0.75 -CaO 1-9 -TiO2 0-0.35 -F 0-0.6 - 烧制的釉料含有金红石和锡石的微晶。

12. 发明授权

US3973976A High index ophthalmic glasses 失效
标题翻译：高指数眼科眼镜
公开(公告)号：US3973976A
公开(公告)日：1976-08-10
申请号：US629798
申请日：1975-11-07
申请人： David C. Boyd
发明人： David C. Boyd
IPC分类号： C03C3/072 , C03C3/102 , C03C3/12 , C03C3/10 , C03C3/08 , C03C3/30
CPC分类号： C03C3/102 , C03C3/072 , C03C3/12
摘要： This invention relates to soft, low expansion, high durability, high refractive index glasses especially suitable for the production of segments or buttons for multifocal ophthalmic lenses and, in particular, photochromic ophthalmic lenses. The glasses demonstrate refractive indices between about 1.58-1.71, softening points between about 630.degree.-675.degree.C., strain points between about 450.degree.-500.degree.C., good chemical durability, and coefficients of thermal expansion (25.degree.-300.degree.C.) between about 45-60 .times. 10.sup.-.sup.7 /.degree.C. The glasses consist essentially, by weight on the oxide basis, of about 3-7% B.sub.2 O.sub.3, 3-11% Al.sub.2 O.sub.3, 30-60% PbO, and 27-55% SiO.sub.2.
摘要翻译：本发明涉及柔软，低膨胀，高耐久性，高折射率的眼镜，特别适用于生产用于多焦点眼科镜片的片段或按钮，特别是光致变色眼镜片。玻璃的折射率约为1.58-1.71，软化点约为630-675℃，应变点在约450-500℃之间，良好的化学耐久性和热膨胀系数（25-300℃） C.）约45-60×10 -7 /℃。玻璃基本上以氧化物重量计约3〜7％的B 2 O 3，3〜11％的Al 2 O 3，30〜60％的PbO，和27-55％的SiO2。

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