Frank A Barnes

US Patent:

8406858, Mar 26, 2013

Filed:

May 1, 2006

Appl. No.:

11/913042

Inventors:

Priya N. Werahera - Aurora CO, US
John Daily - Lafayette CO, US
M. Scott Lucia - Larkspur CO, US
Adrie van Bokhoven - Denver CO, US
E. David Crawford - Denver CO, US
Frank Barnes - Boulder CO, US

Assignee:

The Regents of the University of Colorado, A Body Corporate - Denver CO

International Classification:

A61B 6/00

US Classification:

600476, 600407

Abstract:

Methods and systems for in vivo classification of tissue are disclosed. The tissue is irradiated with light from multiple light sources and light scattered and fluoresced from the tissue is received. Distinct emissions of the sample are identified from the received light. An excitation emission matrix is generated (). On-diagonal and off diagonal components of the excitation emission matrix are identified (). Spectroscopic measures are derived from the excitation emission matrix (), and are compared to a database of known spectra () permitting the tissue to be classified as benign or malignant (). An optical biopsy needle or an optical probe may be used to contemporaneously classify and sample tissue for pathological confirmation of diagnosis.

US Patent:

20130345544, Dec 26, 2013

Filed:

Nov 30, 2012

Appl. No.:

13/691067

Inventors:

The Regents of the University of Colorado - , US
John Daily - Lafayette CO, US
M. Scott Lucia - Larkspur CO, US
Adrie van Bokhoven - Denver CO, US
E. David Crawford - Denver CO, US
Frank Barnes - Boulder CO, US

Assignee:

THE REGENTS OF THE UNIVERSITY OF COLORADO - Denver CO

International Classification:

A61B 5/00

US Classification:

600408, 600407, 600476, 600473

Abstract:

Methods and systems for in vivo classification of tissue are disclosed. The tissue is irradiated with light from multiple light sources and light scattered and fluoresced from the tissue is received. Distinct emissions of the sample are identified from the received light. An excitation-emission matrix is generated (). On-diagonal and off-diagonal components of the excitation-emission matrix are identified (). Spectroscopic measures are derived from the excitation-emission matrix (), and are compared to a database of known spectra () permitting the tissue to be classified as benign or malignant (). An optical biopsy needle or an optical probe may be used to contemporaneously classify and sample tissue for pathological confirmation of diagnosis.

US Patent:

49260820, May 15, 1990

Filed:

Apr 12, 1989

Appl. No.:

7/336995

Inventors:

Frank S. Barnes - Boulder CO

Assignee:

University of Colorado Foundation, Inc. - Boulder CO

International Classification:

H02K 4102
G11B 555

US Classification:

310 905

Abstract:

Superconducting material improves the operating efficiency and reduces the operating power demand for a disk drive suitable for interchanging data with a magnetic or optic medium. The arm containing the head is moved along a path by a balanced superconductor-to-magnetic-field interface such as for radial positioning relative to a circular medium and is maintained in constant spatial relation with respect to the medium by advantageous application of superconductive layers and magnetic field sources. The superconductor environment also permits efficient bearing support for the medium as well as accommodating superconductor motors for driving the medium, and the use of various circuit elements associated with the drive electronics.

US Patent:

46450165, Feb 24, 1987

Filed:

May 6, 1985

Appl. No.:

6/730420

Inventors:

Frank S. Barnes - Boulder CO

Assignee:

University Patents, Inc. - Westport CT

International Classification:

B23B 4516

US Classification:

173134

Abstract:

A pile driver is described wherein a piston within an internal combustion engine is rigidly coupled to the pile to be driven. The engine is resiliently coupled to the pile so as to move with the pile. Control circuitry modifies the frequency of operation of the piston so as to make the impulses created thereby synchronous with reflected impulses within the pile.

US Patent:

50828274, Jan 21, 1992

Filed:

Jun 1, 1990

Appl. No.:

7/532302

Inventors:

Frank S. Barnes - Boulder CO

Assignee:

University of Colorado Foundation, Inc. - Boulder CO

International Classification:

H01B 1200
G11B 2102
G11B 2122
G11B 554

US Classification:

505 1

Abstract:

In a disk file data storage device wherein a radially movable recording head operates to write/read data relative to a recording disk, an electrically energizable superconductor magnetic suspension system is provided for supporting the head in close flying proximity to the surface to the disk's flat recording surface. The head is force biased away from the recording surface by operation of a spring force. The magnetic suspension system includes a superconducting member and a coil member. The superconducting member and coil member that are mounted in confronting relation, such that electrical energization of the coil member produces a magnetic mirror or Meissner force in opposition to the spring force. Variable energization of the coil member operates to support the head at a controlled flying distance from the recording surface. A stack of disks having a plurality head means and a plurality of superconductor/coil pairs, one pair associated with each recording surface, is disclosed.

US Patent:

57211949, Feb 24, 1998

Filed:

Jun 7, 1995

Appl. No.:

8/480164

Inventors:

Robert M. Yandrofski - Littleton CO
John Charles Price - Boulder CO
Frank Barnes - Boulder CO
Allen M. Hermann - Golden CO
James Floyd Scott - Boulder CO

Assignee:

Superconducting Core Technologies, Inc. - Denver CO
University Research Corporation - Boulder CO

International Classification:

H01B 1202
H01G 706

US Classification:

505210

Abstract:

The present invention relates to a tuneable fringe effect capacitor for conducting radio frequency energy. The capacitor includes a thin film of ferroelectric material, a pair of films of a conductive material deposited on the ferroelectric film with a gap between the films, and a substrate for the ferroelectric material and the conductive films. The capacitance value across the gap is varied by applying a voltage to the ferroelectric material and thereby altering the dielectric constant of the ferroelectric material.

US Patent:

54729351, Dec 5, 1995

Filed:

Dec 1, 1992

Appl. No.:

7/983632

Inventors:

Robert M. Yandrofski - Littleton CO
John C. Price - Boulder CO
Frank Barnes - Boulder CO
Allen M. Hermann - Golden CO
James F. Scott - Boulder CO

International Classification:

H01P 118
H01P 900
H03H 1116
H01B 1202

US Classification:

505210

Abstract:

The disclosure relates to ferroelectric and superconducting thin films used in combination to produce low-loss passive microwave and millimeter wave devices which are frequency tuneable. Various metal oxide superconducting and ferroelectric thin films can be deposited in numerous multilayer geometries via a variety of deposition techniques to produce devices which can manipulate microwave and millimeter wave signals through the application of voltage bias signals across the ferroelectric films. Numerous superconducting microwave and millimeter wave devices, including delay lines, phase shifters, resonators, oscillators, filters, electrically-small antennas, half-loop antennas, directional couplers, patch antennas, and various radiative gratings, are made frequency-tuneable by utilizing voltage-tuneable capacitor structures fabricated from voltage-biased ferroelectric thin films. Tuneable antenna arrays are also disclosed incorporating the combined superconducting and ferroelectric thin film structures and geometries which allow for electrical steering of beam patterns by the application of one or more voltage bias signals to ferroelectric thin film gratings.

US Patent:

49719475, Nov 20, 1990

Filed:

Jun 20, 1988

Appl. No.:

7/209155

Inventors:

Frank S. Barnes - Boulder CO
Matthew P. Dugas - St. Paul MN

Assignee:

University of Colorado Foundation, Inc. - Boulder CO

International Classification:

G11B 5235
G11B 5127

US Classification:

505 1

Abstract:

Read/write heads for exchanging information with a magnetic media in either vertical or horizontal recording modes include SQUID detectors coupled to the magnetic flux path of the head. Selective use of superconducting material improves the data interchange operating efficiency of the read/write head and its coils. Magnetic paths associated with head elements are confined and directed by superconducting material to produce compact data with minimal power requirements. Magnetic read/write heads containing Josephson junction or SQUID detectors and which are encased in superconductive material allow high density data recording and highly sensitive data detecting. Data density is also improved by selected application of superconductive material to magnetic read/write heads constructed for perpendicular recording.