Here are seven companies (the last defunct) and partial descriptions of their product lines.

FORBES: Side Lines

They are, unlike most of their erstwhile but now defunct peers, being run like proper companies.

ECONOMIST: An echo of a boom?

But U.S. patent law still gives TQP a six-year period when it can sue companies for prior infringement of the defunct patent.

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Young Kim, CEO of CampusNut.com, has worked at a number of Net companies, including the now-defunct Maincampus.com, and is more magnanimous than other dot-bomb chiefs.

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Many of the world's biggest companies (including BP and the now defunct Enron) have embraced the notion.

ECONOMIST: Attitudes to business

Before he became a consultant and coach, Couper worked in human resources and training at several big companies in Chicago and Los Angeles, including the now-defunct consulting giant Arthur Andersen.

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