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Return to Abstracts of Patents Return to Abstracts of Patents 1000-1249 Patent Abstracts1246. ------. [I. G. FARBENINDUSTRIE A. G.] [Halosulfonylchlorides.] French Patent 52,993, no date. Kainer, p. 271. In addition to French Patent 865,251. The reaction of French Patent 865,251 (abs. 1247) and British Patent 516,214 (abs. 1359) is carried out <0°, for instance at -20° to -30°. |