InvestSource, Inc.: Patent Application Filed by PureSpectrum, Inc. for Dimmable CFL Bulb: Dimming Device and Dimmable Linear Fluorescent Patents Also in Process

Aug 14, 2008 (M2 PRESSWIRE via COMTEX) -- XEL | Quote | Chart | News | PowerRating -- Stocks in the news: PureSpectrum, Inc. (Other OTC:PSPM.PK), Calpine Corporation (NYSE:CPN), Xcel Energy (NYSE: XEL), MarkWest Energy Partners, L.P. (NYSE: MWE)

August 12, 2008 - PureSpectrum, Inc. (Other OTC:PSPM.PK) has continued the expansion and strengthening of its intellectual property portfolio by filing a patent application with the U.S. Patent and Trademark Office for dimmable Compact Fluorescent Lamps (CFL).

In addition to filing for full patent protection for the dimmable CFL bulb design, the company has also begun proceeding to upgrade patent protection from provisional patent to patent application for a two-wire dimming device and dimmable ballast technology for linear fluorescent fixtures. Following the completion of patent filings in the U.S., PureSpectrum plans to file international patent applications pursuant to the Patent Cooperation Treaty and will also file an individual patent application in China.

PureSpectrum president and CEO Lee Vanatta said additional intellectual property protection in China has become necessary in recent weeks due to rapidly progressing licensing discussions with five U.S. lighting manufacturers with production facilities in China. The additional international patent filings, particularly in China, will provide the company and its shareholders with an extra layer of security as the company's scope of business and revenue potential expands.

"As interest in our technologies increases on a global scale, we have accelerated our efforts to ensure that the technology is fully protected in the most relevant markets," Vanatta said. "China has become particularly critical in the protection of our intellectual property because of the large number of lighting manufacturers with production facilities in China. We expect that PureSpectrum technologies will be integrated into products being manufactured in production facilities in China by the first quarter of 2009." In many countries such as Switzerland, Brazil and Canada, legislation has already been enacted which prohibits the sale and use of most forms of incandescent bulbs, and in many other countries legislation has been passed which will ban inefficient incandescent bulbs within the next few years. As the transition from incandescent to fluorescent bulbs accelerates throughout the world, technologies from companies like PureSpectrum that have engineered technologies and products to address performance issues will be in demand as consumer criticisms about the limitations of CFL bulbs become more important to manufacturers.

According to lighting industry and government energy experts, dimming is one of the most critical issues for fluorescent lighting and particularly CFL bulbs as the world prepares for the elimination of incandescent lighting during the next few years. PureSpectrum's proprietary design for a dimmable CFL includes ballast circuitry which enables CFL bulbs to dim without interruption in linear regression the same as incandescent bulbs have dimmed for decades. Additionally, PureSpectrum's ballast circuitry contains approximately the same number of components as a non-dimmable CFL bulb, meaning PureSpectrum technology will allow a manufacturer to sell a dependable dimmable CFL bulb for the same retail price as a non-dimmable CFL.

The company is engaged in ongoing discussions with several prospective licensing partners, which have been conducting performance tests on the dimming technology during the past three months. PureSpectrum recently commissioned additional independent testing at the request of potential licensees, and the company continues to refine the technologies based on feedback from interactions with lighting manufacturers.

Please call (912) 961-4980 for more information about PureSpectrum, Inc. or visit www.purespectrumlighting.com to see a short video featuring PureSpectrum's dimming technology compared to commercially available dimmable CFL bulbs. Please contact Shareholder Development Group at (770) 518-3449 or info@shareholderdg.com for investment information.

August 13, 2008 - Calpine Corporation (NYSE:CPN) (the "Company") today announced that, in connection with the appointment of W. Thaddeus Miller as Executive Vice President, Chief Legal Officer and Secretary, the Company entered into an employment agreement (the "Employment Agreement") and a stock option agreement (the "Stock Option Agreement") with Mr. Miller, certain key provisions of which are summarized in this press release.

Pursuant to the stock option agreement entered into in connection with his employment, Mr. Miller was granted a sign-on option (the "Option") to purchase 1,678,000 shares of common stock of the Company, of which (i) 1,250,000 shares are granted pursuant to the Company's 2008 Equity Incentive Plan and (ii) 428,000 shares are granted outside of the equity plan, but are subject to the same terms and conditions as are set forth in the equity plan. The Option was granted in four tranches of 345,000, 394,000, 443,000, and 496,000 shares of company stock, with each such tranche having a corresponding per share exercise price of $16.60, $19.19, $21.59, and $23.99, respectively. The Option has a seven-year term and will vest ratably on the first, second, third, fourth, and fifth anniversaries of the date of grant, August 11, 2008, subject generally to Mr. Miller's continued employment.

August 13, 2008 -- Xcel Energy (NYSE: XEL | Quote | Chart | News | PowerRating) subsidiary Public Service Company of Colorado (PSCo) today announced it has sold $300 million of its 10-year first mortgage bonds with an annual interest rate of 5.80 percent and $300 million of its 30-year first mortgage bonds with an annual interest rate of 6.50 percent. The bonds are redeemable at any time subject to certain "make whole" provisions.

PSCo intends to add proceeds from the sale of the first mortgage bonds to its general funds and a portion will be applied to fund the payment at maturity of $300 million of 4.375% first mortgage bonds due October 1, 2008. The balance of the net proceeds will be used for the repayment of short-term debt and general working capital.

Goldman, Sachs & Co. and Lehman Brothers Inc. acted as joint book runners for the offering. BMO Capital Markets Corp., Mitsubishi UFJ Securities International plc and Scotia Capital (USA) Inc. were co-managers for the offering.

August 13, 2008 -- NiSource Inc. (NYSE: NI) unit Columbia Gas Transmission Corp. and MarkWest Energy Partners, L.P. (NYSE: MWE | Quote | Chart | News | PowerRating) today announced their intention to jointly develop several natural gas gathering and processing projects to support increased production volumes in the Appalachian Basin.

Columbia Gas and MarkWest are in discussions with several interested natural gas producers regarding plans to provide new gathering and gas processing services in association with Columbia Gas' existing Majorsville, W.Va., compressor station, which serves the northern panhandle area of West Virginia and western Pennsylvania.

Several existing Columbia Gas pipelines in Washington and Greene counties in Pennsylvania and Marshall and Wetzel counties in West Virginia would serve as the backbone of the gathering system connecting with a proposed MarkWest processing plant at Majorsville. MarkWest could offer processing at Majorsville as early as January 2009 and could ramp up the capacity to approximately 100 million cubic feet per day (MMcf/d) by mid 2009 and to over 200 MMcf/d by mid 2010. MarkWest would likely complement these processing facilities with a natural gas liquids fractionation facility to take advantage of the premium regional markets and maximize the value of the producers' gas.

The gathering capacity would be made available in the near future with access to Columbia Gas' regulated transmission and storage services. A portion of the transmission capacity could be available for service as early as December 2008, with the remaining capacity available by April 2009.

Market wrap for August 13, 2008 - The stock market fell 0.3%, with seven of the ten economic sectors posting a loss on Wednesday.

Crude prices rallied 2.9% to $116.31 per barrel.

As a result, the energy (+3.4%) and materials (+2.4%) sectors rallied.

Conversely, energy-price-sensitive areas came under pressure, with consumer discretionary stocks falling 1.6%. Retailers dropped 2.4%.

Financials fell 3.0%, which follows the previous session's steep 5% decline. Bank of America (BAC 28.93, -2.20) tumbled 7%, with media reports indicating that several states are suing Countrywide Financial, which the banking giant recently acquired, over Countrywide's lending practices.

Industrial stocks (-0.8%) trailed the broader market.

In merger and acquisition news, CVS Caremark (CVS 38.08, +0.01) is buying Longs Drug Stores (LDG 70.68, +16.64) for $71.50 per share in cash, or $2.9 billion, which represents a 32% premium to yesterday's closing level.

On the economic front, July retail sales data were soft, and will play into the market's concerns about a pullback in consumer discretionary spending. Retail sales fell 0.1%, the first drop since February, although this is in-line with estimates. Excluding gasoline and grocery store sales, retail sales fell 0.3%. DJ30 -109.51 NASDAQ -1.99 NQ100 +0.1% R2K +0.4% SP400 +0.3% SP500 -3.76 NASDAQ Dec/Adv/Vol 1321/1506/2.04 bln NYSE Dec/Adv/Vol 177/1353/1.21 bln ABOUT INVESTSOURCE, INC.: WIN an 8 day 7 nights Caribbean Getaway, GO TO: www.investsourceinc.com.

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To hear "The Fastest 60 Seconds in the Small-Cap Market," please go to www.ceo-corner.com InvestSource, Inc. is not a licensed broker, broker dealer, market maker, investment banker, investment advisor, analyst or underwriter. InvestSource, Inc. affiliates, officers, directors and employees may also have bought, or may buy the shares discussed in this opinion and may profit in the event of a rise in value. InvestSource, Inc. will not advise as to when it decides to sell and does not, and will not, offer any opinion as to when others should buy or sell; each investor must make that decision based on his or her judgment of the market InvestSource has received 5 million shares of Greenstone Holdings for services rendered. Please consult your broker before purchasing or selling any securities mentioned herein. To view full disclaimers, please go to http://investsourceinc.com/php/disclaimer.php (disclaimers).

This release may contain statements that constitute forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E the Securities Exchange Act of 1934, as amended. The words "may," "would," "will," "expect," "estimate," "anticipate," "believe," "intend," and similar expressions and variations thereof are intended to identify forward-looking statements. Investors are cautioned that any such forward-looking statements are not guarantees of future performance and involve risks and uncertainties, many of which are beyond the Company's ability to control, and that actual results may differ materially from those projected in the forward-looking statements as a result of various factors. The information contained in an InvestSource profile is provided as an information service only. The accuracy or completeness of the information is not warranted and is only as reliable as the sources from which it was obtained. InvestSource has agreed to be compensated 58,600 of free trading shares of PSPM for services rendered.

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