Webcast Alert: Nano-Proprietary, Inc. announces its May 9, 2007 Investor Conference Call and Webcast

Austin, Texas – May 7, 2007 /PRNewswire-FirstCall/ – Nano-Proprietary, Inc. (OTC: NNPP) announces a Conference Call and Webcast, with the details described below.

What: Nano-Proprietary, Inc. Investor Conference Call and Webcast to discuss the current status of business opportunities and recent developments.

When: Wednesday, May 9, 2007 at 12:00 p.m. EDT. A replay of the webcast will be available until June 30, 2007.

Where: Website link will be available at www.nano-proprietary.com under "Investor information" or at http://www.videonewswire.com/event.asp?id=39733

Participants who wish to call should call (785) 830-7975.

How: Live over the Internet -- Simply log on to the web at the address above, or by using the link at Nano-Proprietary's website or dial (785) 830-7975 and use the conference ID: NNPP.

Contact: Doug Baker, (248) 391-0612

Safe Harbor Statement

This press release contains forward-looking statements that involve risks and uncertainties concerning Nano-Proprietary's business, products, and financial results. Actual results may differ materially from the results predicted. More information about potential risk factors that could affect our business, products, and financial results are included in Nano-Proprietary's annual report on Form 10-K for the fiscal year ended December 31, 2005, and in reports subsequently filed by Nano- Proprietary with the Securities and Exchange Commission ("SEC"). All documents are available through the SEC's Electronic Data Gathering Analysis and Retrieval System (EDGAR) at www.sec.gov or from Nano-Proprietary's website listed below. Nano-Proprietary hereby disclaims any obligation to publicly update the information provided above, including forward-looking statements, to reflect subsequent events or circumstances.

About Nano-Proprietary, Inc.

Nano-Proprietary, Inc. is a holding company consisting of two wholly-owned operating subsidiaries. Applied Nanotech Inc. is a premier research and commercialization organization dedicated to developing applications for nanotechnology with an extremely strong position in the fields of electron emission applications from carbon film/nanotubes, sensors, functionalized nanomaterials, and nanoelectronics. Electronic Billboard Technology, Inc. (EBT) has a financial interest in technology related to electronic digitized sign technology. Nano-Proprietary's website is www.nano-proprietary.com.

Company Contact:
Doug Baker
Applied Nanotech Holdings, Inc.

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