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

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 positions in the fields of electron emission applications from carbon film/nanotubes, sensors, functionalized nanomaterials, and nanoelectronics. Electronic Billboard Technology, Inc. (EBT) possesses technology related to electronic digitized sign technology. The Companies have over 200 patents or patents pending. Nano-Proprietary's business model is to license its technology to partners that will manufacture and distribute products using the technology. Nano-Proprietary's website is www.nano-proprietary.com .

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