Toshiyuki Kawaguchi, Hideki Suzuki: Anisotropically electroconductive film adhesive. Shin Etsu Polymer, Hopgood Calimafde Kalil Blaustein & Judlowe, February 4, 1986: US04568592 (55 worldwide citation)

A film adhesive of a thermoplastic or thermosetting polymeric insulative material can be imparted with anisotropic electroconductivity by dispersing electroconductive fibrils of specified dimensions therein in orientation each lying within a plane substantially parallel to the surface of the film ad ...