| 摘要 |
1472897 Adsorbents TANAKA GIKEN KK 19 April 1974 [20 April 1973] 17379/74 Heading B1L [Also in Division C1] An absorbent comprises particles of activated clay (e.g. terra alba) the surfaces of which are partially covered by particles of activated carbon embedded in or adhered to the surfaces of the clay particles, the carbon particles being smaller than the clay particles and the activated clay forming a major proportion by weight of the adsorbent. |
