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BTI RECEIVES PATENT APPROVAL FOR NEW HIGH-TEMPERATURE SUPERCONDUCTOR DEVICES

 BTI RECEIVES PATENT APPROVAL FOR NEW
 HIGH-TEMPERATURE SUPERCONDUCTOR DEVICES
 SAN DIEGO, July 29 /PRNewswire/ -- Biomagnetic Technologies Inc. (NASDAQ: BTIX) announced today that it received patent approval on a new process to fabricate high-temperature Josephson junctions that can operate at the relatively high temperature of liquid nitrogen (-196 C). This reproducible process yields high-quality Josephson junctions, which are a key building block in superconductor electronics technology.
 "This breakthrough junction technology could have far-reaching applications in biomagnetism and other areas such as nondestructive testing," said Stephen O. James, president and chief executive officer of San Diego-based BTi, which 20 years ago pioneered the use of Josephson junctions in low-temperature liquid helium (-296 C).
 BTi already has used the new high-temperature process to successfully manufacture more than 200 double junction superconducting quantum interference devices (SQUIDS).
 "The SQUIDS made from these new high-temperature Josephson junctions are the most sensitive signal detectors created to date operating in liquid nitrogen," according to James. "If incorporated into biomagnetometers, these new SQUIDS would simplify the construction and lower manufacturing and operating costs."
 BTi plans to exercise exclusive rights on this junction technology for its Magnes(R) system, but, according to James, the company will consider license or collaborative arrangements for research or other nonmedical applications.
 The Magnes system is a revolutionary medical device that uses SQUIDS to detect and measure the strength of the small magnetic fields emanating from electrical activity in the brain and heart. The information gained from this process, called Magnetic Source Imaging (MSI), is then used to map the location of the electrical activity in three dimensions with a high degree of temporal and spatial resolution. Images generated by the biomagnetometer are being used today to diagnose and treat patients with a number of neurological disorders including tumors, lesions, epilepsy, head trauma, dementia and vision and memory disturbances.
 BTi, based in San Diego, is the recognized leader in the development of biomagnetometers for medical applications. It has received FDA 510(k) marketing clearance for its Magnes biomagnetometer system in the United States and Japanese Ministry of Health and Welfare approval for sale in Japan as a medical device.
 Magnes is a registered trademark of Biomagnetic Technologies Inc. Biomagnetic Technologies stock is traded on the NASDAQ Stock Exchange under the symbol BTIX.
 Patent No. 5,134,117: "Microbridge Superconductor Device Using Ceramic Superconductor Materials."
 -0- 7/29/92
 /CONTACT: Leslie Ferrini of Biomagnetic Technologies, 619-453-6330; or Jill Esterbrooks of Stoorza, Ziegaus & Metzger, 619-236-1332, for Biomagnetic Technologies/
 (BTIX) CO: Biomagnetic Technologies Inc. ST: California IN: CPR MTC SU:


LS-JL -- SD003 -- 4395 07/29/92 07:31 EDT
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Date:Jul 29, 1992
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