Mary Lou Nelson

US Patent:

6376063, Apr 23, 2002

Filed:

Jun 14, 1999

Appl. No.:

09/330925

Inventors:

Glen L. Rasmussen - Seattle WA
Micheal E. Dickson - Federal Way WA
Robert J. Miller - Fall City WA
Mary J. Nelson - Seattle WA
Jonathan C. Hughes - Stanwood WA
Diane C. Rawlings - Bellevue WA

Assignee:

The Boeing Company - Seattle WA

International Classification:

B32B 516

US Classification:

428328, 148306, 148313, 252 6251, 428402, 428403, 428935

Abstract:

We make particulates, especially magnetic FeâCo alloys having high magnetic permeability, of controlled dimensions, especially those having a narrow thickness size distribution centered around a median or target thickness in the range of about 0. 1-1. 0 m, using electrodeposition typically on a smooth (polished) titanium cathode. Our preferred continuous process uses a rotating drum cathode inside a fixed anode to grow flakes and to produce them automatically by inherent instability in the deposited film. The drum preferably rotates about a substantially vertical axis. The particulates shed (slough off) into the electrolyte (because of mismatch between the cathode surface and the plated metal or alloy at the molecular level) where they are separated in a magnetic separator or other suitable device. If the flakes are soft iron or iron-cobalt alloys, the drum generally is titanium or titanium alloy.

US Patent:

6699579, Mar 2, 2004

Filed:

Sep 28, 2001

Appl. No.:

09/967248

Inventors:

Glen L. Rasmussen - Seattle WA
Micheal E. Dickson - Federal Way WA
Robert J. Miller - Fall City WA
Mary J. Nelson - Seattle WA
Jonathan C. Hughes - Stanwood WA
Diane C. Rawlings - Bellevue WA

Assignee:

The Boeing Company - Seattle WA

International Classification:

B32B 516

US Classification:

428328, 106456, 106459, 106480, 106623, 148306, 148313, 428403, 428925, 428926, 428935

Abstract:

We make particulates, especially magnetic FeâCo alloys having high magnetic permeability, of controlled dimensions, especially those having a narrow thickness size distribution centered around a median or target thickness in the range of about 0. 1-1. 0 m, using electrodeposition typically on a smooth (polished) titanium cathode. Our preferred continuous process uses a rotating drum cathode inside a fixed anode to grow flakes and to produce them automatically by inherent instability in the deposited film. The drum preferably rotates about a substantially vertical axis. The particulates shed (slough off) into the electrolyte (because of mismatch between the cathode surface and the plated metal or alloy at the molecular level) where they are separated in a magnetic separator or other suitable device. If the flakes are soft iron or iron-cobalt alloys, the drum generally is titanium or titanium alloy.

US Patent:

7052586, May 30, 2006

Filed:

Feb 11, 2003

Appl. No.:

10/365724

Inventors:

Glen L. Rasmussen - Seattle WA, US
Micheal E. Dickson - Federal Way WA, US
Robert J. Miller - Fall City WA, US
Mary J. Nelson - Seattle WA, US
Jonathan C. Hughes - Stanwood WA, US
Diane C. Rawlings - Bellevue WA, US

Assignee:

The Boeing Company - Chicago IL

International Classification:

C25B 11/03

US Classification:

204212, 204213, 204272, 204284

Abstract:

We make particulates, especially magnetic Fe—Co alloys having high magnetic permeability, of controlled dimensions, especially those having a narrow thickness size distribution centered around a median or target thickness in the range of about 0. 1–1. 0 μm, using electrodeposition typically on a smooth (polished) titanium cathode. Our preferred continuous process uses a rotating drum cathode inside a fixed anode to grow flakes and to produce them automatically by inherent instability in the deposited film. The drum preferably rotates about a substantially vertical axis. The particulates shed (slough off) into the electrolyte (because of mismatch between the cathode surface and the plated metal or alloy at the molecular level) where they are separated in a magnetic separator or other suitable device. If the flakes are soft iron or iron-cobalt alloys, the drum generally is titanium or titanium alloy.