"UrDinkel is a brand used in Switzerland for spelt from specified cultivation. It guarantees the exclusive use of old Swiss spelt varieties that have not been crossed with modern wheat." - Quote from the Wikipedia article https://de.wikipedia.org/wiki/UrDinkel https://schweizerbrot.ch/blog/der-ursprung-des-urdinkels
Hello GaLiGrü, thank you for your inquiry. During our clarifications with the responsible specialist agency, it turned out that both the logo and the name "UrDinkel" were created in 1996 by the spelt interest group and registered as a trademark. Further information on this can be found on this website. We do not know whether there is any connection with Urs Dinkelberger. Kind regards, Tabea