Quote:
Originally Posted by sid
As I person who has a dozen patents, I need to remind you that patents expire. No patent is good for more than 20 years (17 years in US). They cannot be renewed. Once they expire, anyone can use the technology free of charge. If you don't use the patent, you lose money. A corporation probably wouldn't sit on a patent because they would lose a lot of money.
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yes they end but not till 2015- between 2003 and then you'd be unable to find a single battery sold by chevron that could be used in an EV- several company's have tried suing them to try and purchase batteries but no luck-
Even the inventor Stanford R. Ovshinsky said in an interview
"I think we at ECD made a mistake of having a joint venture with an oil company, frankly speaking. And I think it's not a good idea to go into business with somebody whose strategies would put you out of business, rather than building the business."
The Energy Roadmap - The Edison of our Age: Stan Ovshinsky and the Future of Energy [Video Interview Part 1]
interview-