IC 007. US 013 019 021 023 031 034 035. G & S: Apparatuses, devices and combinations thereof and members or components of such a nature, namely cleaning appliances using steam, disintegrators, condensors, catalytic converters, dust removing installations for cleaning purposes, gas condensors and air condensors, all of the foregoing for the removal of environmentally hazardous compounds from waste gases, especially for the reduction or removal of nitrogen (II) oxide (N2O) through catalytic chemical decomposition or reduction of nitrogen (II) oxide (N2O)

IC 037. US 100 103 106. G & S: Installation, assembly, repair, servicing and maintenance of gas scrubbers for the removal of environmentally hazardous compounds from waste gases by the reduction or removal of nitrogen (II) oxide (N2O)

IC 042. US 100 101. G & S: Engineering services related to the process technology of gas scrubbers for the removal of environmentally hazardous compounds from waste gases by the reduction or removal of nitrogen (II) oxide (N2O); services of a consulting engineer related to project planning, design, supervision of assembly, commissioning, operation, inspection, servicing, maintenance, revamping, expansion and demolition of chemical and other industrial plants; engineering services related to licensing procedures for official permits and environmental impact studies required for the process technology of gas scrubbers; computer programming for others for the operation of apparatus for the reduction or removal of nitrogen (II) oxide (N2O); development of chemical production methods, off gas removing methods and gas scrubbing methods for the reduction or removal of nitrogen (II) oxide (N2O); design of plants, namely production and pilot factories, and production facilities for third parties; engineering services for other contractors in the field of reduction or removal of nitrogen (II) oxide (N2O)