Information pursuant to section 5 of the German Telemedia Act (TMG):

INTERKAT Catalyst GmbH

Eduard-Rhein-Straße 25
53639 Königswinter

Authorised representatives:

Dr. Jörg Spengler


Telephone: +49(0)2244 87 88 0
Fax: +49(0)2244 87 88 685

E-mail: info(at)

Registry entry:

Entry in commercial registry:
Registration office: Local court, Siegburg
Registration number: HRB 14200


Value added tax identification number in accordance with section 27 a German VAT Law (UStG):
DE 815653424

Responsible for the content according to section 55 Para. 2 German Treaty on Broadcasting (RStV): 

Dr. Jörg Spengler
Eduard-Rhein-Straße 25
53639 Königswinter

Conception, design, programming and hosting:

Pixel Boulevard Webdesign, Recklinghausen

Liability disclaimer: Despite careful control of the contents, we assume no liability for the contents of external links. The contents of the linked sites are the sole responsibility of the operators of the sites. The contents of the German version are legally binding.