专利名称：DOUBLE ION EXCHANGE METHOD FOR STRENGTHENING GLASS ARTICLES
党员民主评议个人自评发明人：HASEGAWA J,JA,INOUE T,JA,OHSATO N,JA 申请号：US3798013D
潮流的近义词
如何更新申请日：19720424
公开号：US3798013A
公开日：我和表妹
犬之岛
19740319
专利内容由知识产权出版社提供
摘要：A process for increasing the strength of a glass article by subjecting a glass article containing alkali metal ion A to a treatment of exchanging the ion A with an alkali metal ion B having a larger ion radius than the ion A, wherein the exchanging treatment is performed in two successive stages, and the cond-stage exchanging treatment is carried out under milder treating conditions using a treating salt having a larger ion B content than in the first-stage treatment.
土豆肉丝的做法
申请人：NIPPON SHEET GLASS CO LTD,JA
明朝一共多少年
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