Abstract: A device (1) for purification of water driven by gravity through a purification unit between an upper dirt water container (2) and a lower clean water tank (3). A backwash system may be integrated, the system comprising a receptacle (8) for accumulation of the backwash water to prevent consumption thereof by mistake.

Abstract: A method can include obtaining a physical commodity that is divided into one or more physical units. The method can further include storing the physical commodity in a secure vault. Additionally, a map can be utilized to subdivide each of the one or more physical units into a plurality of segments. Each of the plurality of segments can be tangible portions of the physical unit that are distinct and identifiable. Subdividing each of the one or more physical units can render the physical units unaltered. Further, the map can be utilized to assign ownership of the plurality of segments to one or more owner users. The method can additionally include receiving an instruction to transfer ownership of a particular segment of the plurality of segments from a particular owner user to a buying user, and assigning in the map ownership of the particular segment to the buying user.

Abstract: A method can include obtaining a physical commodity that is divided into one or more physical units. The method can further include storing the physical commodity in a secure vault. Additionally, a map can be utilized to subdivide each of the one or more physical units into a plurality of segments. Each of the plurality of segments can be tangible portions of the physical unit that are distinct and identifiable. Subdividing each of the one or more physical units can render the physical units unaltered. Further, the map can be utilized to assign ownership of the plurality of segments to one or more owner users. The method can additionally include receiving an instruction to transfer ownership of a particular segment of the plurality of segments from a particular owner user to a buying user, and assigning in the map ownership of the particular segment to the buying user.

Abstract: A device (1) for purification of water driven by gravity through a purification unit between an upper dirt water container (2) and a lower clean water tank (3). A backwash system may be integrated, the system comprising a receptacle (8) for accumulation of the backwash water to prevent consumption thereof by mistake.

Abstract: A device (1) for purification of water driven by gravity through a purification unit between an upper dirt water container (2) and a lower clean water tank (3). A backwash system may be integrated, the system comprising a receptacle (8) for accumulation of the backwash water to prevent consumption thereof by mistake.

Abstract: A method can include obtaining a physical commodity that is divided into one or more physical units. The method can further include storing the physical commodity in a secure vault. Additionally, a map can be utilized to subdivide each of the one or more physical units into a plurality of segments. Each of the plurality of segments can be tangible portions of the physical unit that are distinct and identifiable. Subdividing each of the one or more physical units can render the physical units unaltered. Further, the map can be utilized to assign ownership of the plurality of segments to one or more owner users. The method can additionally include receiving an instruction to transfer ownership of a particular segment of the plurality of segments from a particular owner user to a buying user, and assigning in the map ownership of the particular segment to the buying user.

Abstract: A method can include obtaining a physical commodity that is divided into one or more physical units. The method can further include storing the physical commodity in a secure vault. Additionally, a map can be utilized to subdivide each of the one or more physical units into a plurality of segments. Each of the plurality of segments can be tangible portions of the physical unit that are distinct and identifiable. Subdividing each of the one or more physical units can render the physical units unaltered. Further, the map can be utilized to assign ownership of the plurality of segments to one or more owner users. The method can additionally include receiving an instruction to transfer ownership of a particular segment of the plurality of segments from a particular owner user to a buying user, and assigning in the map ownership of the particular segment to the buying user.

Abstract: A method can include obtaining a physical commodity that is divided into one or more physical units. The method can further include storing the physical commodity in a secure vault. Additionally, a map can be utilized to subdivide each of the one or more physical units into a plurality of segments. Each of the plurality of segments can be tangible portions of the physical unit that are distinct and identifiable. Subdividing each of the one or more physical units can render the physical units unaltered. Further, the map can be utilized to assign ownership of the plurality of segments to one or more owner users. The method can additionally include receiving an instruction to transfer ownership of a particular segment of the plurality of segments from a particular owner user to a buying user, and assigning in the map ownership of the particular segment to the buying user.

Abstract: A device (1) for purification of water driven by gravity through a purification unit between an upper dirt water container (2) and a lower clean water tank (3). A backwash system may be integrated, the system comprising a receptacle (8) for accumulation of the backwash water to prevent consumption thereof by mistake.

Abstract: A device (1) for purification of water driven by gravity through a purification unit between an upper dirt water container (2) and a lower clean water tank (3). A backwash system may be integrated, the system comprising a receptacle (8) for accumulation of the backwash water to prevent consumption thereof by mistake.

Abstract: A liquid filtration method and device, for example a drinking straw with a mouthpiece, and a bundle of hollow fibres. The open ends of the fibres are embedded in a base and provided in a compartment between the base and a liquid outlet. Water or other liquid flows into the inner volume of the hollow fibres and from there through their filtering membrane walls and into the compartment before the liquid flows out through the liquid outlet, for example the mouthpiece.

Abstract: A device (1) for purification of water driven by gravity through a purification unit between an upper dirt water container (2) and a lower clean water tank (3). A backwash system may be integrated, the system comprising a receptacle (8) for accumulation of the backwash water to prevent consumption thereof by mistake.

Abstract: A liquid filtration method and device, for example a drinking straw with a mouthpiece, and a bundle of hollow fibres. The open ends of the fibres are embedded in a base and provided in a compartment between the base and a liquid outlet. Water or other liquid flows into the inner volume of the hollow fibres and from there through their filtering membrane walls and into the compartment before the liquid flows out through the liquid outlet, for example the mouthpiece.