Abstract: A seaweed filter cake product produced by conditioning raw seaweed by mixing it with water and other substances, and then digesting the conditioned seaweed by cooking it with steam to form a steam-digested mixture. The filter cake is skimmed off the top of the resulting steam-digested mixture and used by itself, or as a starting product for producing fertilizers or plant growth stimulators in liquid or pelletized form.

Abstract: Products having as an essential ingredient thereof a special seaweed known as eel grass. Such seaweed has been found to surprisingly constitute a flame-retardant, vermin-proof, sound-proof, rot-proof, weather-proof, and bug-proof material. Such seaweed is also very beneficial as a soil conditioner and fertilizer. The novel products including such eel grass include a blanket-type material, a board-like sheet material, a spray-type composition, a paint-type composition, and as a filler for cavities in building walls.