[Federal Register Volume 59, Number 61 (Wednesday, March 30, 1994)]
[Unknown Section]
[Page 0]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 94-7393]


[[Page Unknown]]

[Federal Register: March 30, 1994]


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DEPARTMENT OF COMMERCE
National Institute of Standards and Technology

 

Government Owned Inventions Available for Licensing

AGENCY: National Institute of Standards and Technology Commerce.

ACTION: Notice of government owned Inventions available for licensing.

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SUMMARY: The inventions listed below are owned by the U.S. Government, 
as represented by the Department of Commerce, and are available for 
licensing in accordance with 35 U.S.C. 207 and 37 CFR part 404 to 
achieve expeditious commercialization of results of federally funded 
research and development.

FOR FURTHER INFORMATION CONTACT:
Technical and licensing information on these inventions may be obtained 
by writing to: Nancy Hale, National Institute of Standards and 
Technology, Office of Technology Commercialization, Physics Building, 
room B-256, Gaithersburg, MD 20899; Fax 301-869-2751. Any request for 
information should include the NIST Docket No. and Title for the 
relevant invention as indicated below.

SUPPLEMENTARY INFORMATION: The inventions available for licensing are:

NIST Docket No. 89-042

Title: Method and Apparatus for Laser Control
    Description: The disclosure is directed to a method and apparatus 
for precisely controlling the frequency of a laser, and for precise 
control of distance. In a disclosed embodiment, a laser beam is split, 
modulated to obtain a frequency differential, and coupled to an 
interferometer which is designed to produce two processed beams having 
intensities that vary at the same ac frequency, but at a phase 
difference that is indicative of the laser frequency. The processed 
beams are converted to ac electrical signals which are coupled to phase 
control circuitry. The phase control circuitry determines and phase 
between the electrical signals and produces a control signal for 
controlling the laser frequency. Phase offset increments are introduced 
in the phase detection process, these phase offset increments resulting 
in controlled changes in the laser frequency. The laser frequency can 
be computed and read out as a function of the phase offset increments. 
In another embodiment, the control signal is used to accurately control 
a distance.

NIST Docket No. 90-017

Title: Apparatus and Methods for Implementing Error Correction in Rail 
Time for Machine Tools with Encoder-Type Position Feedback
    Description: This invention describes several ways to improve 
machine tool control error correction technology. It specifically 
addresses fixed geometric or thermally induced errors in systems 
employing encoder-type position feedback signals. The invention 
provides realtime, portable error correction techniques that can be 
used with any endoder-type position feedback devices, with minimal 
software or hardware changes.

NIST Docket No. 91-023

Title: Photovoltaic Solar Water Heating System
    Description: This NIST invention provides a system for heating 
water using electrical power generated by a photovoltaic array. The 
efficiency of the system is optimized by matching the power output 
characteristics of the photovoltaic array to the heater load.

NIST Docket No. 93-019

Title: Laser Controlled Nanolithography
    Description: New NIST technology shows promise for creating three-
dimensional nanostructures. Using light to ``steer'' chromium atoms, 
the technique can make rows of atoms 65 nanometers (nm) wide with 213 
nm spacing. The ultimate limit is expected to be structures with widths 
as small as 5 to 10 nm.

NIST Docket No. 94-001

Title: An Improved Apparatus for Precisely Measuring Accelerating 
Voltages Applied to X-Ray Sources
    Description: This invention is an improvement of an earlier 
invention, Method and Apparatus for Precisely Measuring Voltage Applied 
to x-Ray Sources (U.S. Patent Application Serial No. 08/021,232). The 
new invention allows the accurate measurement of the accelerating 
voltage applied to an x-ray tube. Variation in accelerating voltage 
affects the amount of radiation penetrating the radiated object and 
thus the contrast of the resulting radiographic image. In certain 
diagnostic applications, e.g. mammography and coronary angiography, 
radiographic contrast is critical to making an accurate diagnosis. The 
invention allows precise measurement of the accelerating voltage and 
thus accurate calibration of x-ray equipment to ensure proper contrast 
in the resulting images.

    Dated: March 23, 1994.
Samuel Kramer,
Associate Director.
[FR Doc. 94-7393 Filed 3-29-94; 8:45 am]
BILLING CODE 3510-13-M