David Fleming

US Patent:

7911830, Mar 22, 2011

Filed:

May 14, 2008

Appl. No.:

12/120549

Inventors:

E. James Torok - Shoreview MN, US
David Leslie Fleming - Minnetonka MN, US
Edward Wuori - St. Paul MN, US
Richard Spitzer - Berkeley CA, US

Assignee:

Integrated MagnetoElectronics - Berkeley CA

International Classification:

G11C 11/00

US Classification:

365158, 365173

Abstract:

Various magnetoresistive memory cells and architectures are included which enable nonvolatile memories having high information density.

US Patent:

8300455, Oct 30, 2012

Filed:

Feb 16, 2011

Appl. No.:

13/028710

Inventors:

E. James Torok - Shoreview MN, US
David Leslie Fleming - Minnetonka MN, US
Edward Wuori - St. Paul MN, US
Richard Spitzer - Berkeley CA, US

Assignee:

Integrated MagnetoElectronics - Berkeley CA

International Classification:

G11C 11/14

US Classification:

365171, 365158, 36518505, 365173

Abstract:

Various magnetoresistive memory cells and architectures are described which enable nonvolatile memories having high information density.

US Patent:

8619467, Dec 31, 2013

Filed:

Feb 18, 2011

Appl. No.:

13/030602

Inventors:

E. James Torok - Shoreview MN, US
Richard Spitzer - Berkeley CA, US
David L. Fleming - Cortez FL, US
Edward Wuori - Saint Paul MN, US

Assignee:

Integrated Magnetoelectronics - Berkeley CA

International Classification:

H01L 27/22

US Classification:

365158, 365202, 365173, 257295, 257E21665, 257E27005, 257E43004, 257421, 427548, 427131, 427132, 360324

Abstract:

Multi-period structures exhibiting giant magnetoresistance (GMR) are described in which the exchange coupling across the active interfaces of the structure is ferromagnetic.

US Patent:

20050269612, Dec 8, 2005

Filed:

May 10, 2005

Appl. No.:

11/126950

Inventors:

E. Torok - Shoreview MN, US
David Fleming - Minnetonka MN, US
Richard Spitzer - Berkeley CA, US

International Classification:

G01R033/02
H01L029/76
H01L029/94
H01L031/062
H01L031/113
H01L031/119

US Classification:

257295000, 324252000

Abstract:

A solid-state component including a network of multi-layer structures is described. Each multi-layer structure exhibits magnetoresistance and has magnetization vectors associated therewith which are operable to be switched at least in part by current-induced magnetization reversal. The solid-state component generates an output signal when the network of multi-layer structures is resistively imbalanced. The output signal corresponds to output nodes in the network and is a function of an input signal applied at input nodes in the network.

US Patent:

46600612, Apr 21, 1987

Filed:

Dec 16, 1985

Appl. No.:

6/808385

Inventors:

Mark F. Sweeny - St. Paul MN
Meir Gershenson - St. Paul MN
David L. Fleming - Edina MN
Robert E. Barta - Eagan MN

Assignee:

Sperry Corporation - Blue Bell PA

International Classification:

H01L 3922

US Classification:

357 5

Abstract:

A thin, nominally 150 angstroms, normal metal layer, nominally the noble normal metal palladium, sandwiched intermediate between two superconducting layers, nominally niobium, supports totally superconducting current flow therethrough such normal metal layer by the quantum mechanical tunneling effect. Such a thin normal metal layer is useful as a stop etch layer for fabrication process control, including especially the selective niobium anodization process, as an oxidation resistant or immune layer to which totally superconducting electrical contact may be reliably made such as by soldering, and as a patterned resistor in those regions of the substrate plane where such thin normal metal layer is not sandwiched by superconducting layers. Particularly concerning such stop etch function, a thin normal layer of palladium will serve as a stop etch layer to the etching of niobium while not precluding totally superconducting contact therethrough such thin palladium layer. Particularly concerning the electrical contact function, a superconducting wire, nominally niobium, may be soldered with lead-tin or indium-tin to a thin normal metal layer of palladium in the formation of a totally superconducting connection therethrough such thin palladium layer.

US Patent:

42290724, Oct 21, 1980

Filed:

Jun 6, 1978

Appl. No.:

5/913259

Inventors:

Ernest J. Torok - Saint Paul MN
David L. Fleming - Edina MN
Thomas R. Johansen - Minneapolis MN

Assignee:

Sperry Rand Corporation - New York NY

International Classification:

G02F 109
G11C 1306
H04N 931
G11B 1110

US Classification:

350151

Abstract:

A display system using the dispersive Faraday coefficient of a magnetic screen to obtain a color display from white light is disclosed. A beam of energy is directed upon a magnetic screen while concurrently an intensity modulated magnetic field is directed normal to the surface of the magnetic screen. The combination of the heating effect of the energy beam and the magnetic orienting effect of the intensity modulated magnetic field established localized areas of differing magnetic characteristics over the planar surface of the magnetic screen. Subsequently, a polarized beam of white light that floods the magnetic screen is, for each of several wave lengths, differently rotated upon passing through each of the areas of differing magnetic characteristics in the magnetic screen. The beamlets that are formed by the so-differently rotated areas of the polarized white light beam are then passed through an uncrossed analyzer, which beamlets appear as a multicolored projection upon the magnetic screen.

US Patent:

49020870, Feb 20, 1990

Filed:

Sep 19, 1988

Appl. No.:

7/245593

Inventors:

Stanley J. Lins - Bloomington MN
David L. Fleming - Edina MN

Assignee:

Unisys Corporation - Blue Bell PA

International Classification:

G02F 111

US Classification:

350 9613

Abstract:

An optical bypass switch includes a variable diffraction element responsive to acoustical signals operable to couple light signals incident to first and second input ports to first and second output ports, respectively, for a first diffraction index and from the first and second input ports to the second and first output ports, respectively, for a second diffraction index. Acoustical signals are provided by an electro-acoustic transducer coupled to the variable diffraction element which establishes acoustical signals in response to acoustical signals coupled thereto.

US Patent:

41231422, Oct 31, 1978

Filed:

Feb 28, 1977

Appl. No.:

5/772880

Inventors:

David L. Fleming - Edina MN
Thomas R. Johansen - Minneapolis MN
Ernest J. Torok - St. Paul MN

Assignee:

Sperry Rand Corporation - New York NY

International Classification:

G06G 900
G03H 116

US Classification:

350162SF

Abstract:

A system for optically correlating two signals, e. g. , radar, sonar, etc. , incorporating both time shifts and doppler shifts is described. The correlation of the signals is produced as a two-dimensional distribution of light on a light detector/display plane wherein the amplitude of the light distribution is proportional to the correlation of the two signals as a function of relative time shifts,. DELTA. t (X direction), and relative doppler shifts,. alpha. omega. (Y direction), between the signals. Doppler shifts are introduced into the processor by the incorporation of a channelized cylindrical lens in one signal channel while using a cylindrical lens in the other signal channel.