Lifestraw Sa

Vestergaard Frandsen Sa

Lifestraw Sarl

Vestergaard Sa

Vastergaard Sa

Mikkel Vestergaard Frandsen

Jean-Marc Pascal

Jean-Luc Madier De Champvermeil

Alison Hill

Daniel Frauchiger

Didier Epain

Luc Stoops

Matthieu Zellweger

Sebastien Gouin

Sicco Dirk Roorda

Thi Quynh Chi Phan

Michael Stanley Pedersen

Huyen Thanh Hoang

Roelie Bottema

Mathieu Corbineau

Søren Rose

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

Water purification device

Water filter pitcher

An apparatus for water purification comprising a flexible, collapsible water container () to which a purification unit () is connected by a tube () for purification of water driven through the purification unit () by gravity. The container is produced by welding or gluing a laminate with an overlay region.

Apparatus for water purification

An insecticidal polymer matrix containing Piperonyl Butoxide (PBO) and deltamethrin (DM), wherein the ratio between the content of PBO and the content of DM in terms of weight is higher than 3.

Insecticidal polymer matrix comprising PBO and DM

Water purifier

By incorporating PBO and phtalocyanine in a polymeric matrix, the surface concentration of the PBO after migration to the surface is reduced relatively to a matrix without phtalocyanine. This can be used to control the migration of PBO and retain PBO for a long-lasting effect.

Retention of PBO in polymer matrices by phthalocyanines

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.

Drinking straw with hollow fibre liquid filter

An insecticidal barrier () having an upper net part () with a mesh size preventing insects, for example mosquitoes, to transverse the barrier, the upper net part () having a first content of insecticide. In addition, the insecticidal barrier () has a lower part () with an insecticidal fabric, tarpaulin, foil, woven or knitted fabrics or non-woven, or net with a net material having a higher tear strength than the net of the upper part () in order to make the lower part () of the net more durable.

Insecticidal barrier with a durable lower part

System for separating particles from an environment, the system including a perforated screen and an ionisation electrode in the environment for creating an electrostatic potential between the electrode and the screen to attract the particles to the screen.

System with canopy and electrode for air cleaning

Growing community of inventors

Lausanne, Switzerland

Mikkel Vestergaard Frandsen