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| Number | Title | Issue Date |
| 4143202 | Ash coated cellular glass pellet A foam glass pellet comprising a core of cellular glass and a coating of fine ash particles substantially enclosing said cellular glass core and bonded thereto is disclosed. The foam glass pellet is derived from a glass having a softening point less than ... | 03/06/1979 |
| 4081259 | Method for forming coated cellular glass pellets A method for forming small, smooth surfaced foamed glass pellets with a coated surface of ash is disclosed. The method involves the recovery of waste glass, typically soda/lime/silica glass, crushing and sizing same to obtain particles of less than 200 me... | 03/28/1978 |
