Nano-Proprietary, Inc. Announces Conference Call and Webcast

Market Wire, May, 2007

Nano-Proprietary, Inc. (OTCBB: NNPP) today announced that it will hold an investor conference call and webcast on Wednesday, May 9, 2007 at 12:00 p.m. EDT. Further details related to the call-in number and website link will be available next week. The purpose of the call will be to discuss the current status of the business and recent developments.

"In addition to the quarterly shareholder letters, I promised to hold periodic conference calls when appropriate," said Tom Bijou, CEO of Nano-Proprietary. "I want to make sure everyone is up to date on our activities."

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 field of electron emission applications from carbon film/nanotubes, sensors, functionalized nanomaterials, and nanoelectronics. Electronic Billboard Technology, Inc. (EBT) has investments related to electronic digitized sign technology. The Companies have over 200 patents or patent applications 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 .

COMPANY CONTACT: Doug Baker Chief Financial Officer Nano-Proprietary, Inc. 248.391.0612 Email Contact MEDIA CONTACT: William J. Spina 781.378.2000 Email Contact