[Federal Register Volume 59, Number 24 (Friday, February 4, 1994)]
[Unknown Section]
[Page 0]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 94-2530]


[[Page Unknown]]

[Federal Register: February 4, 1994]


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NATIONAL AERONAUTICS AND SPACE ADMINISTRATION
[Notice 94-008]

 

Invention Available for Licensing

AGENCY: National Aeronautics and Space Administration.

ACTION: Notice of availability for licensing.

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SUMMARY: The invention listed below is owned by an agency of the U.S. 
Government and is available for licensing in the U.S. in accordance 
with 35 U.S.C. 207 to achieve expeditious commercialization of results 
of federally funded research and development.
    U.S. Patent Application Number 08/153,930, filed November 15, 1993, 
and entitled ``Method and Apparatus To Characterize Ultrasonically 
Reflective Contrast Agents''--The present invention relates in general 
to a method and apparatus for characterizing the time and frequency 
response of ultrasonically reflective contrast agents.
    The present invention is a method and apparatus for characterizing 
the time and frequency response of an ultrasonically reflective 
contrast agent. An ultrasonically reflective contrast agent is 
injected, under constant pressure, into a fluid flowing through a pump 
flow circuit. The fluid and the ultrasonically reflective contrast 
agent are uniformly mixed in a mixing chamber, and the uniform mixture 
is passed through a contrast agent chamber. The contrast agent chamber 
is acoustically and axially interposed between an ultrasonic transducer 
chamber and an acoustic isolation chamber. A pulse of ultrasonic energy 
is transmitted into the contrast agent chamber from the ultrasonic 
transducer chamber. An echo waveform is received from the 
ultrasonically reflective contrast agent, and it is analyzed to 
determine the time and frequency response of the ultrasonically 
reflective contrast agent.
    The invention claimed in this patent application is available for 
licensing on an exclusive, partially exclusive or nonexclusive basis 
for upfront, running and annual minimum royalty payments to a partner 
committed to commercializing this technology.

ADDRESSES: Licensing information and a copy of the U.S. Patent 
Application (without the claims) may be obtained by writing to Kimberly 
A. Chasteen at the Office of Patent Counsel, Mail Stop 143, NASA 
Langley Research Center, Hampton, VA 23681-0001 (telephone (804) 864-
3227, fax (804) 864-8298). Please note the case number, LAR-14,969-1, 
when requesting information.

    Dated: January 28, 1994.
Edward A. Frankle,
General Counsel.
[FR Doc. 94-2530 Filed 2-3-94; 8:45 am]
BILLING CODE 7510-01-M