If you want more information on these inventions, the U.S. Patent Office maintains a decent search engine, or you can try free commercial services like google or FreePatentsOnline. Commercial sites to help launch your inventing career include the Patent Cafe, a specialize portal for the field, and Inventor Spot, a compendium of inventions and resources from around the world. The National Inventor Fraud Center (despite its name, the web site of a patent attorney) does contain much sane advice on how to avoid patent scams and negotiate a license. Also many interesting links. The Canadian Government helps subsidize an excellent patent development organization at the The University of Waterloo. Sound advice, by a nonprofit. Finally, visit this marvelous site at the University of Houston- host of Nation Public Radio's  The Engines of Ingenuity. Hundreds of fascinating stories about invention and inventors. But you should remember patents are only one step on the long road to commercialization. Indeed, it is the EASIEST step- the hardest part is finding a manufacturer, building a business, and convincing customers to share your dream. While paranoia is healthy in any business endeavor, most inventors are excessively secretive about their ideas. From long and painful experience, your biggest problem is not having someone "steal" your concept while it is still only a dream, but rather, that no one knows the idea exists. The best protection is a patent, publicity and a successful business case- not secrecy. Remember- few inventors invent to make money- they do so because they can't help themselves. You can explore summaries of these patents by topic area (above), or search all my patents at the USPTO or google