发明授权
- 专利标题： Roadstone
- 专利标题（中）： 路石
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申请号： US35186873申请日： 1973-04-17
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公开(公告)号： US3874888A公开(公告)日： 1975-04-01
- 发明人: WILSON ARTHUR
- 申请人： ALBRIGHT & WILSON
- 专利权人： Albright & Wilson
- 当前专利权人： Albright & Wilson
- 优先权： US35186873 1973-04-17; GB1879870 1970-04-20; GB5831969 1969-11-28; US9345670 1970-11-27
- 主分类号： C04B18/02
- IPC分类号： C04B18/02 ; C04B26/26 ; E01C7/08 ; C08H17/04
摘要：
It is known to use certain calcined minerals as roadstone. The invention provides an improved roadstone consisting of a sintered spinel preferably embedded in a softer matrix such as sintered slag. The roadstone is characterized by an improved polished stone value.
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