Return to Abstracts of Patents Return to Abstracts of Patents 250-499 Patent Abstracts295. ------. [BYK-GULDENWERKE CHEMISCHE FABRIK A. G.] [Synthetic Paraffins.] French Patent 892,152, no date. Kainer. P. 249. Low-melting, 30º-40º, gatsch paraffins from the Fischer-Tropsch process are suitable as a base for hair treating agents. |