Technology

As a high technology company, Mallentech spends much bigger percent of its budget on research and development than its peers. Research and development enables Mallentech to maintain its technical advantages.
Mallentech holds patents in such areas as exhaust gas sensor element structure, ceramic materials, exhaust element heater design, exhaust sensor packaging, and testing systems.

Technologies Available for Licensing:
Mallentech actively seeks the opportunities to license its technologies. By leveraging Mallentech’s technologies, companies can achieve enhanced competitiveness through lower research and development costs and reduced time to market. Currently these two patented seal materials are available for licensing:

seal material

A Seal Material with Low Permeability
Abstract: A method for decreasing the permeability of the exhaust gas sensor element compressible talc seal is disclosed. The present invention has greatly reduced permeability particularly with respect to gasoline liquid and vapor. This seal material is made up of a minimum of 60% talc with a carefully controlled primary particle size distribution so as to be able to be compacted to a high green density and up to 25% of a dense, inorganic additive with a plate-like particle morphology such as silicon carbide, titanium diboride, mica or other material. This additive acts as a barrier to the diffusion of vapor and/or the wicking of liquid from the exhaust side to the air side of the planar sensor.

A Seal Material with Improved Sensor Element Holding Characteristics
Abstract: A method for increasing the exhaust gas sensor element holding force is disclosed. The present invention proposes a compressible talc seal with improved holding properties. This seal formulation consists of greater than 60% talc, from 5% to 25% of thermally expandable vermiculite, mica or other material with the remainder being other additives such as a binder, lubricant, or other material or materials. Heat treating the seal after the initial compression sealing process causes an expansion of the expandable vermiculite, mica or other material which produces a more uniform holding force on the planar sensor element than that produced by the initial uniaxial compression.