12th EMSCF, Graz, Austria, 9.-12.5.2010, Renner, M., Weidner, E., Geihsler, H., High Pressure Tanning – New process principle from lab-scale to industry, p. 200

Prosciba 2010, Natal, Brazil, 5.-9.4.2010, Renner, M., Weidner, E., CO₂ assisted processing in solid state – tanning of leather

Equifase, Praia da Rocha, Portugal, 17. bis 21.10.2009, Renner, Weidner, Geihsler, Intensified and environmentally friendly tanning of animal skin

CISAP 3, Rome, Italy, 11.-14.5.2008, Renner, M., Weidner, E., Brandin, G., Sustainable and environmentally friendly production of leather

10th EMSCF, Barcelona, Spain, 4.-7.5.2008, Renner, M., Brandin, G., Schlüter, S., Henning, T., Weidner. E., High pressure impregnation – a sustainable way of producing advanced materials

GVC-Jahrestagung, Aachen, 10.-11.3.2008, Renner, M., Brandin, G., Weidner, E., Geihsler, H., Herstellung von Leder – Prozessintensivierung mittels CO₂

Formula V, Potsdam, 19.-22.11.2007, Renner, M.; Brandin, G.; Weidner, E.; Bertling, J., Impregnation of native and synthetic polymers with supercritical carbon dioxide, p.77

DECHEMA/DWA Industrietage Wassertechnik, Dechema, Frankfurt, 13.-14.11.2007, Renner, M., Weidner, E.

ECCE 6, Copenhagen, Denmark, 16.-21.9.2007, Weidner, E., Renner, M., Geihsler, H., Brandin,G., Production of leather under the influence of compressed carbon dioxide, Book of Abstracts, pp. 775-776