Patent Explainer

Patent Explainer

Dexwet is a leader in filter technology and currently owns over 60 original patents. Dexwet specializes in the development and commercialization of the patented wet-filter technology that are durable, high quality and can be easily reused multiple times.

Originally developed to effectively mitigate fine dust emitted by heat-sensitive equipment, Dexwet today offers a broad range of customized solutions for the capture fine dust particles and pathogens as small as small as 0.007 microns, with high efficiency and effectiveness over the filter lifecycle that is up to 12 times longer than with conventional, dry filter media. For example, the virus that causes COVID-19 is approximately 0.12 microns and the virus that causes the flu is approximately 0.08-0.12 microns. (See expert opinion report that support these claims)

Dexwet Filters has patented wet-air filter technology that has been used in commercial equipment to filter fine dust particles since 2005. Dexwet Filters can be made from almost any materials, from cotton to plastic and even metal to fit almost any industry’s requirements without affecting its effective qualities. Dexwet Pure Air Filters are designed for one year of continuous effective operation. As the Pure Airline has a durable plastic design, it allows the Pure Air Filter to be reused repeatedly, making it cost effective.

Presently, Dexwet Filters has 5 basic patent families with over 60 globally issued 2nd, 3rd, and 4th generation patents. Dexwet Filter’s first Patent was granted in 2002 using wet filter rods. The second generation filed in 2008 protected all other possible geometrical forms of Dexwet filter rods, while being parallel and staggered and the production method was switched from fibers that were used initially to hypophylic plastics. The third generation of Patents were granted in 2009. These are shared patents with Novomatics and secure any combination of a Dexwet filter as already protected with an artificial airstream produced by a fan.

Technological improvements in plastic mould injection and tooling facilitated the major step forward for Dexwet in terms of cost-effectiveness, and a fourth layer Patent family was granted in 2014, and the Pure Air Filter product line is already covered by this. The most recent Patent was granted in 2016, for the Aluminum Particle Filter and the final aspect that hypophilic Dexwet protected design filters must not be moistened, if sufficient oily particles can be filtered out of the airstream, thereby forming the absorption layer independently. This principle was also successfully demonstrated with the Dexwet high-performance motorsport filter for NASCARs that is also covered in addition by this 5th layer.

New Products, Markets & Other Opportunities. Dexwet Filter’s flagship brand, Pure Air, uses a 4th generation patented technology with plastic construction. It is also easily reshaped and sized for a multitude of healthy air filter purposes. Our focus with the Pure Air Filter line is on intake and exhaust attachments for ventilation systems, which are size-specific to the standards in each geographic region. We also developing add-on and replacement filters for existing ventilation systems which requires specific sizes as well. Other stand-alone personal safety products are being designed as internationally universal products that may only require minor customizations.

Dexwet Patent Families

Original wet filtration PCT patent „Apparatus and method for wet filtering of machine exhaust“ PCT filed in 2000 in the USA,

    • granted in Canada, Europe, Germany, Japan and USA, Denmark, Finland, Italy

Basic protection for use of parallel and staggered filter rods that get moistured to operate wet in airstreams

Second generation PCT patent „Filter Module“ PCT filed in 2005 in Austria,

    • granted/validated in Austria, Austrialia, Canada, Europe, France, Germany, Italy, Japan, South Korea, Spain, United Kingdom, United States

Improvement of method by use of oil absorbing plastics for the filter rods and new methods to apply absorbtion fluid for the surface of the filter. Basic protection for any thinkable geometry of the filter sticks, round, cubic, triangle, flat, wingform, etc, as long as the sticks are positioned in parallel and staggered form

Third generation joint PCT patent with Novomatic filed in 2009 in Austria: “Air Cleaner for Removing Air Pollutants from an Airstream”

    • granted/validated in Australia, Canada, China, South Korea, United States, Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Europe, Finland, France, Germany, Greece, Hong Kong, Hungary, India, Ireland, Italy, Japan, Latvia, Lithuania, Luxembourg, Macedonia, Malta, Mexico, Monaco, Netherlands, Norway, Poland, Portugal, Romania, Russian Federation, San Marino, Slovakia, Slovenia, South Africa, Spain, Sweden, Swizerland, Turkey, Ukraine, United Kingdom

Protects any combination of Dexwet technology filters with an artificial airstream generated by fans or similar and second protects the „By-Pass“ filter configuration that is unique in the filter industry for protection of electonic devices. Joint patent infrigement defense option with Novomatic!!!

Fourth-generation PCT Patent, filed in Austria in 2014 „Hydrophilic filter“

    • granted in China, Europe, Austria, Germany, United Kingdom, France, Belgium, Sweden, Netherlands and other countries pending

Refines and improves the second generation 2005 by protecting plastic mold injection to produce any possible geometric form already protected since 2005 in industrial scale and widening the application scope also to very slow and weak natural and convection airstreams. Protects any plastic mold injection product variants like Dexwet Pure Air (heat radiator), new lamellae filterst hat have already been successfully tested, also the NASCAR Motorsport filter in both generations

Fifth generation patent consists of two PCT patents filed in Austria in 2016, one being „Die Casting“ the other one „Moisturization“, the two are interconnected but also stand alone

    • Granted in Austria, Europe (country phase started), pending in China, USA, Canada, Mexico, Japan, South Korea, India, Russian Federation

Protect Dexwet Filtration on the other side of the airstream velocity and temperature spectrum compared to familiy four and before, cover production of Dexwet filters in metals and the process application in die casting with vacuum and heat. APF Filters for Vacuum systems deal with particle speeds close to the sonar wall, so up to 780mph, and completely filter out hot Aluminium particles at temperatures up to 1,000°F

The second patent stands for the fact that oil absorbing materials and the geometric structure of Dexwet filters will form the oily absorbtion surface that is necessary for the filtration itself, if only sufficient oily particles are contained in the airstream. So it protects as last method of moisturing of the filter sticks, by not moisturing them, if you have sufficient oily particles in the airstream.

This last patent generation was successfully applied and marketed both with the APF technology for the Aluminium die casting industry and also in the motorsport application for NASCAR

With the new R&D facilities and the 3D printing capabilities we plan to implement, the next patent generation based on production improvments using this technology can be applied and rolled out globally again, in case that our IP landscape should show any vulnerabilities. But with the third patent generation standing that firm and broad, we are well covered to license our IP and Knowhow globally to any industry and application that may make sense.