Patents Chris Diorio, Paul Hasler, Bradley A. Minch, and Carver Mead, ``A semiconductor structure for long term learning,'' U.S. Patent No. 5,627,392, issued 6 May, 1997. Patent owned by California Institute of Technology. Bradley A. Minch, Paul Hasler, Chris Diorio, and Carver A. Mead, ``An autozeroing floating-gate amplifier,'' Patent Number 5,875,126, Issued Feb. 23, 1999. Patent owned by California Institute of Technology. Chris Diorio, Paul Hasler, Bradley A. Minch, and Carver Mead, ``Method for implementing a learning function,'' U.S. Patent No. 5,914,894, issued 22 June, 1999. Patent owned by California Institute of Technology. Chris Diorio, Paul Hasler, Bradley A. Minch, and Carver Mead, ``A three-terminal silicon synaptic device,'' provisional patent application submitted to the U.S. Patent Office on November 15, 1995, and assigned serial number 60/006,795; utility application submitted to U.S. Patent Office on July 25, 1996. Patent application owned by California Institute of Technology.