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6.发明授权
公开(公告)号：US4538590A
公开(公告)日：1985-09-03
申请号：US666820
申请日：1984-10-31
申请人： Chang H. Oh
发明人： Chang H. Oh
CPC分类号： A47J27/004 , A47J36/02 , Y10S220/912
摘要： Improved cookware is disclosed having non-ferrous metal sidewalls and a natural stone bottom central portion. The non-ferrous metal sidewalls preferably are formed of an aluminum alloy having a coefficient of thermal expansion substantially equal to the coefficient of thermal expansion of the natural stone bottom. The natural stone bottom preferably comprises an iron-rich amphibole rock, and in the particularly preferred embodiment comprises hornblende.
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9.发明授权
公开(公告)号：US4622948A
公开(公告)日：1986-11-18
申请号：US707860
申请日：1985-03-04
申请人： Chang H. Oh
发明人： Chang H. Oh
CPC分类号： A47J27/004 , A47J36/02 , Y10S220/912
摘要： Improved cookware is disclosed having non-ferrous metal sidewalls and a natural stone bottom central portion. The non-ferrous metal sidewalls preferably are formed of an aluminum alloy having a coefficient of thermal expansion substantially equal to the coefficient of thermal expansion of the natural stone bottom. The natural stone bottom preferably comprises an iron-rich amphibole rock, and in the particularly preferred embodiment comprises hornblende.
摘要翻译： 公开了改进的炊具，其具有有色金属侧壁和天然石头底部中心部分。 有色金属侧壁优选由铝合金形成，该铝合金的热膨胀系数基本上等于天然石材底部的热膨胀系数。 天然石底部优选地包含富含铁的闪石岩，并且在特别优选的实施方案中包括角闪石。
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