"NANO-PATENT: HP researchers close to delivering molecular circuits"
Ratcheting up the pace, Hewlett-Packard Laboratories has announced two patents that are said to solve some small but nettlesome problems with a molecular FPGA approach based on a switching molecule called rotaxane. The HP patents detail a practical method for connecting molecular-scale circuits to the outside world and a method for defining circuit sub-blocks in a massive crossbar array of nanowires. A third patent describes an approach to memory arrays using rotaxane.

Story in EE Times: http://www.eet.com/at/news/OEG20020215S0063