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  • 1.
    [发明专利]CH19870004565 _ NATIONAL COUNCIL FOR CEMENT & BUILDING MATERIALS 1987年11月24日
  • [发明专利]CH19870005086 _ HOCHTIEF AKTIENGESELLSCHAFT VORM. GEBR. HELFMANN 1987年12月28日
    In applying a spray-concrete layer on a surface, a pumpable as well as sprayable spray-concrete mixt. is made up of cement, aggregates, opt. additives and water. A given stream of the spray-concrete mixt. is passed with a concrete-conveyor pump throu...
  • 3.
    [发明专利]CH19880004217 _ OLAJIPARI FOEVALLALKOZO ES TERVEZOE VALLALAT 1987年03月05日
    The invention relates to a process for the preparation of alumina ceramics having an increased abrasion resistance which comprises adding before forming to 96-99.5 % by weight of aluminium oxide in an amount of 0.1-4 % by weight an eutectic sintering ...
  • 4.
    [发明专利]CH19880001710 _ COORS PORCELAIN COMPANY 1987年08月31日
  • 5.
    [发明专利]CH19870002749 _ PASSAMAQUODDY TRIBE, A SOVEREIGNE INDIAN TRIBE RECOGNIZED BY THE GOVERNMENT OF THE UNITED STATES OF AMERICA 1987年07月20日
  • 6.
    [发明专利]CH19870003268 _ PASSAMAQUODDY TRIBE, A SOVEREIGNE INDIAN TRIBE RECOGNIZED BY THE GOVERNMENT OF THE UNITED STATES OF AMERICA 1987年08月26日
    This invention relates to an apparatus and method for simultaneously scrubbing acidic exhaust gases and removing metal salts from alkaline waste dust from a cement plant or the like thereby producing useful products from what would otherwise be wasted...
  • 7.
    [发明专利]CH19870003993 _ FELDMUEHLE AKTIENGESELLSCHAFT 1987年10月12日
  • 8.
    [发明专利]CH19870004695 _ WERNER NILL 1987年12月01日
  • 9.
    [发明专利]CH19870003231 _ SANDOZ AG 1987年08月24日
  • 10.
    [发明专利]CH19870003559 _ VAPOCURE TECHNOLOGIES LIMITED C/O PEAT, MARWICK, MITCHELL & CO. 1987年11月26日
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