Bio-active rock and method for making the same

Details Bio-active rock and method for making the same Bio-active rock and method for making the same

1997-03-21

1999-09-07

Epstein, Henry F.

Coating processes

Vacuum utilized prior to or during coating

428 15, 428540, 428907, B44C 306

Patent

active

059484748

ABSTRACT:
A method for impregnating rock or landscaping material with bio-active and/or colored fluid. To impregnate the rock or landscaping material with bio-active chemical, the rock or landscaping material is heated to dehydrate it, and cooled to an ambient temperature in a dehumidified chamber, and then placed in a pressurizable container which is filled with bio-active chemical. The pressurizable container is placed under pressure for a sufficient time that the bio-active fluid is forced into the interstices of the rock or landscaping material. When the rock or landscaping material is removed from the pressurizable container, it has been impregnated with bio-active chemical and gradually emits the bio-active chemical. The rock or landscaping material may be cleaned using water or a solvent. The bio-active chemical used can be a herbicide, pesticide, plant or insect growth hormones, repellents of cats, dogs, mice, or other pests, or fertilizers.

REFERENCES:
patent: 3547688 (1970-12-01), Gagliardi et al.
patent: 3551192 (1970-12-01), Reinert
patent: 4115130 (1978-09-01), Crump et al.
patent: 4169088 (1979-09-01), Hansen
patent: 4258090 (1981-03-01), Moraru
patent: 4880690 (1989-11-01), Szycher et al.
patent: 5702780 (1997-12-01), Tiller et al.

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