ARTICLE
25 April 2019

The Green Series: Purifying The Air

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HLK

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HLK is a global cooperation combining Haseltine Lake Kempner LLP and HL Kempner Partnerschaft mbB and provides a full suite of IP services advising across the entire IPR Lifespan™ in all technical and scientific disciplines. With offices in London, Bristol, Munich, Leeds, Glasgow, and Guangzhou (China), HLK provides IP services across the globe. HLK’s resources and expertise are exclusively dedicated to IP protection: safeguarding the inventions, creative designs, brand identities and other innovations of its clients. HLK advises on the strategy, identification, protection, opposition and appeal, exploitation and enforcement of IP rights, and defends its clients from allegations of infringement by focusing on acquiring competitive advantage for its clients. HLK is privileged to work with some of the most exciting and forward-looking businesses in the world which are at the forefront of innovation and product development in their various spheres.
For this year's Earth Day, the Green Series is turning its attention to air pollution. It is estimated that over 9,000 Londoners die every year as a result of breathing toxic air!
United Kingdom Environment

For this year's Earth Day, the Green Series is turning its attention to air pollution. It is estimated that over 9,000 Londoners die every year as a result of breathing toxic air! It has also been found that 24.6% of all educational establishments in London are in areas that breach the legal limit for NO2, which can have a serious impact on children's health. Approximately 50% of air pollution in the capital comes from road transport, and many actions have been taken to try and reduce the impact of cars on air quality. For example, the Ultra Low Emissions Zone (ULEZ) has recently come into effect, with the aim of reducing the number of cars on the roads. However, that doesn't mean technology doesn't have a part to play!

Here are some inventions looking to remove pollution from the air we breathe:

1) Filtering Using Movement

US2018250619 presents an attachment for vehicles (cars, buses, trains, taxis) that takes the energy of the vehicle and harnesses it to purify air. As the vehicle moves forward, the air becomes trapped in the chambers of the attachment, which uses the principles of fluid dynamics to separate smog particulates from air. These smog particulates are then trapped in the attachment to be cleaned out, whilst the clean air can freely flow out.

2) Filtering Using Heat

JPS57162628 aims to remove sulphuric acid mists from the air by pumping air through a heated filter. Solid particles are captured using an initial filter, after which the sulphuric acid mists are condensed and captured. The collected sulphuric acid is then stored until it can be removed, whilst any remaining gaseous components such as steam are pumped back out of the system.

3) Filtering Using Charges

Finally, US2015330945 is an air filter that gives an electric charge to particulates in the air depending on their measured size. By doing this, the invention can sort the particles into groups by size through applying an electric field to the air flowing through the filter. These particles can then also be removed from the air, and the filtered air allowed to flow out of the filter. Once sorted, the invention can measure the concentrations of different particles that have been separated from the air.

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