Patent No. US 6,719,985 B1: The National Institute of Agrobiological Sciences, Tsukuba, and Eaudeleman Co., Ltd., Osaka, Japan, patented a process to obtain crystalline superfine silk powder particles less than 3mm in diameter. The steps include contacting a silk substance with an alkali aqueous solution at high temperatures and pressures, dealkalizing and drying the silk substance and powdering it.
Process to Obtain Silk Powder Particles Patented
Published November 15, 2005
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