수열법에 의한 청색 발광용 형광체의 제조방법
    51.
    发明授权
    수열법에 의한 청색 발광용 형광체의 제조방법 失效
    蓝芽发射体的制备

    公开(公告)号:KR100132278B1

    公开(公告)日:1998-04-14

    申请号:KR1019930031761

    申请日:1993-12-30

    Abstract: A mixture of calcium oxide or magnesium oxide and tungsten trioxide powder was hydrothermalized at 300-450 deg.C for 30-90 hours in NaOH or KOH solution. In the hydrothermalization, a crystalline calcium tungstate or a magnesium tungstate fluorescent material is formed in NaOH solution and more reaction time is necessary in case of KOH solution.

    Abstract translation: 将氧化钙或氧化镁和三氧化钨粉末的混合物在NaOH或KOH溶液中在300-450℃水热化30-90小时。 在水热法中,在NaOH溶液中形成结晶的钨酸钙或钨酸镁荧光物质,在KOH溶液的情况下需要更多的反应时间。

    가루 반죽기
    53.
    实用新型
    가루 반죽기 失效
    用于制备DOUGH的机器

    公开(公告)号:KR2019940008604Y1

    公开(公告)日:1994-12-26

    申请号:KR2019930016593

    申请日:1993-08-25

    Applicant: 박재우

    Inventor: 박재우

    Abstract: 내용 없음.

    56.
    外观设计
    失效

    公开(公告)号:KR3001427550000S

    公开(公告)日:1993-10-04

    申请号:KR3019920016924

    申请日:1992-10-12

    Applicant: 박재우

    Designer: 박재우

    57.
    外观设计
    失效

    公开(公告)号:KR3001423460000S

    公开(公告)日:1993-09-15

    申请号:KR3019920008426

    申请日:1992-05-25

    Applicant: 박재우

    Designer: 박재우

    58.
    外观设计
    失效

    公开(公告)号:KR3001421940000S

    公开(公告)日:1993-09-13

    申请号:KR3019920014955

    申请日:1992-09-03

    Applicant: 박재우

    Designer: 박재우

    60.
    外观设计
    失效

    公开(公告)号:KR3001370730000S

    公开(公告)日:1993-04-03

    申请号:KR3019920009740

    申请日:1992-06-12

    Applicant: 박재우

    Designer: 박재우

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