04444148 is referenced by 23 patents and cites 4 patents.

Waste receptacles for use by animals, such as laboratory animals and household pets, are provided with an odor barrier of lightweight, non-absorbent, non-water-wettable, granular material, such as paraffin wax coated corn cob granules. The buoyant, non-absorbent, lightweight granular material is also useful as an odor barrier in liquid-containing portable human toilets and generally as an odor barrier for pools or sumps or open containers of odoriferous materials, such as aqueous offal wastes, aqueous waste from food processing plants and odoriferous wastes from other sources, such as industial sources, e.g., paper mills, chemical plants, manufacturing plants and the like. The non-absorbent granular material in animal toilet applications is conveniently retained on a foraminous tray which, in turn, is mounted on a collecting tray for collection of liquid waste percolating downwardly from the granular material into which the liquid waste was originally deposited.

Title
Waste receptacles having odor barriers
Application Number
6/295740
Publication Number
4444148
Application Date
August 24, 1981
Publication Date
April 24, 1984
Inventor
Harry L Lander
Grand Rapids
MI, US
Assignee
Cattus
TX, US
IPC
A01K 1/015
View Original Source