In about 1838 German weaver Friedrich Gottlob Keller read Réaumur's report. Unaware of Fenerty across the ocean, he experimented for a few years and, in 1845, a year after Fenerty's letter to the newspaper, filed for a patent in Germany for the ground wood pulp process for making modern paper. In that same year Henry Voelter bought the patent for about five hundred dollars and started making paper. His venture wasn't financially successful, and he later was unable to afford to renew his patent. Voelter has been credited in Germany as the first to make paper from wood pulp.