U.S. companies such as Solyndra, Evergreen Solar, Energy Conversion Devices and SpectraWatt went bankrupt.
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Yet the question remains, will Energy Conversion Devices even exist as a company a year from now?
As you might imagine, the warning is hitting Energy Conversion Devices shares hard.
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For Energy Conversion Devices, a small materials firm in Rochester Hills, Mich.
Meanwhile, U.S.-based companies were mixed, as Energy Conversion Devices increased 2.6%, SunPower gained 1.4%, though First Solar slipped 0.2% and Evergreen Solar fell 1.7%.
Energy Conversion Devices ( ENER - news - people ) could be one of the best bearish plays of the bunch.
His company, Energy Conversion Devices, founded in 1960 with his wife, Iris, went public in 1964 but lost money almost every year of its existence.
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Energy Conversion Devices (ENER) is not having a good month.
Silicon has been the material of choice for power conversion devices.
FORBES: Google-backed Transphorm Raises $25M For Power Conversion Tech
Solar stocks are heading lower across the board this morning following an alarming earnings warning after the close yesterday by thin-film solar provider Energy Conversion Devices (ENER).
FORBES: Solar Shares Slide; Fresh Worries On European Subsidy Cuts
The troubles continue to mount at Energy Conversion Devices.
The clouds are getting darker for Energy Conversion Devices.
FORBES: Energy Conversion Devices Won't Pay Interest Due On Notes
Mr. Miller, the 47-year-old energy aide to Mr. Reid, bought shares in Energy Conversion Devices stock in two chunks on Jan. 14 and Jan. 16, 2008, according to filings.
Dozens of solar manufacturers worldwide have filed for bankruptcy in the past two years, including U.S. companies such as Solyndra, Abound Solar, Evergreen Solar, Energy Conversion Devices and Konarka Technologies.
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"We were worried as we are always worried because it meant uncertainty, " said Martha Duggan, the vice president of regulatory and government affairs for the solar unit of Energy Conversion Devices.
What Transphorm is doing is making new kinds of power conversion devices, based on a material called gallium nitride (a substance best known for its use in LED lighting), which it embeds in modules and sells to equipment manufacturers.
FORBES: Google Ventures, Kleiner Back Power Conversion Play Transphorm
MoPub believes the trail-off for Android devices was due to their poor conversion rate.
Though Symbian's certainly not getting as much share of the mobile discussion these days as some of its smaller competitors, it's certainly important to keep in mind that these guys have software deployed on literally hundreds of millions of devices, making this perhaps the largest-scale conversion of a closed operating system to open source in history.
ENGADGET: Symbian Foundation talks about its move to open source
Not surprisingly for a company that makes phones and tablets, the hearing aid wouldn't always have to do the heavy lifting, either: iOS devices could handle some of the on-the-fly conversion, and pre-recorded speech could receive advance treatment to speed up the process.
ENGADGET: Apple seeks patent for hearing aids that deliver speech at an even keel
That might help explain a high conversion rate among basic phone owners, where three quarters of those planning to update their devices expected to move to a smartphone.
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