Rudolf Řípa
Rudolf Řípa was a pectin expert and acquaintance/business partner of Otto Frank.
Rudolf Řípa (1891-1978) was a pectin expert and acquaintance/business partner of Otto Frank. In 1930, on behalf of the manufacturer Pomosin-Werke, he submitted a patent in the United States for the hardening of steel and steel alloys through immersion in a liquid pectin solution.[1]
Written by Řípa, Die Pektinstoffe. Einführung mit besonderem Hinblick auf die Obstkonserven-Industrie was published in 1937.[2] The company Sangostop bought a copy of this book.[3]
He lived in Prague and escaped in 1939 to Valparaiso in Chili, where he taught at a university. In 1945-1947, he corresponded with Otto Frank. The renewed contact was thanks to Erich Elias. Some of their letters discuss the pectine trade and earlier joint ventures.[4]
Footnotes
- ^ United States Patent Office, patentnr. 1876170, toegekend 6 september 1932.
- ^ Die Pektinstoffe. Einführung mit besonderem Hinblick auf die Obstkonserven-Industrie, Braunschweig: Dr. Serger & Hempel, 1937.
- ^ Stadsarchief Delft, Nederlandsche Gist- & Spiritusfabriek (toegang 188), inv. nr. 4684: kasboek N.V. Sangostop, 1936 - 1946, post 488, 26 januari 1938.
- ^ Anne Frank Stichting, Anne Frank Collectie, Otto Frank Archief, reg. code OFA_085: Correspondentie 1945-1947.