Pattensen
Germany
12
2022-04-21
The entities that hold a legal rights for patent applications filed by inventor Siemund Stephan:
Stephan Siemund from Pattensen, DE has applied for patents for these inventions. The list has both pending applications and granted patents:
Monometallic rhodium-containing four-way conversion catalysts for gasoline engine emissions treatment systems
#2 | 2019-06-06Monometallic rhodium-containing four-way conversion catalysts for gasoline engine emissions treatment systems
#3 | 2014-07-24Automotive catalyst composites having a two-metal layer
#4 | 2014-01-30Catalyst materials
#5 | 2012-07-19Three way conversion catalyst with alumina-free rhodium layer
#6 | 2011-10-20Gasoline engine emissions treatment systems having particulate filters
#7 | 2011-02-10Treatment system for gasoline engine exhaust gas
#8 | 2010-04-29Multilayered catalyst compositions
#9 | 2009-02-12Catalyst compositions
#10 | 2009-02-12Catalyst compositions
#11 | 2009-02-12Multilayered catalyst compositions
#12 | 2008-09-11Multilayered catalyst compositions
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