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- Wolffenbuttel, R.F. (author), De Graaf, G. (author), Leijtens, J.A.P. (author) patent 2009
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Labordus, M. (author), Van Tooren, M.J.L. (author), De Graaf, T.J.M. (author)A pin/hole joint construction in a laminate (1) comprises layers (9) of fibres and resin bonded to one another. At least one hole (2) extends transversely completely through the layers in the laminate, in which hole a pin (3) is accommodated that bears against the inner surface of the hole for transferring forces between the laminate and the pin...patent 2004
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De Graaf, W. (author), de Leeuw, J.W. (author)Abstract of WO 9412450 (A1) The invention relates to a method of preparing sulfur-containing compounds, comprising reacting a sulfur compound with a compound containing unsaturated carbon-carbon bonds, wherein in a solvent one or more compounds containing non-activated unsaturated carbon-carbon bonds react with monohydrogen polysulfides. The...patent 1994