Patent US3699547A successfully refreshed from Google Patents.
US3699547A
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Magnetic bubble domain system
Assignee: Boeing North American Inc
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Filing: 1971-03-12
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Granted: 1972-10-17
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Expires: 1991-03-12
Abstract
Abstract A magnetic bubble domain system having a strip or channel of film of magnetic bubble domain material associated with a supporting substrate is described. The surface of the strip of magnetic bubble domain material has a surface which is at substantially the same level as the surface of the adjacent material.
Inventors
- 👤 John M Owens
- 👤 David M Heinz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:34
CPC Classifications
G; G11; G11C; G11C19/00; G11C19/02; G11C19/08; G11C19/0808; G11C19/0841; H; H01; H01F; H01F10/00
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
24 words
The domain system of claim 1 wherein the layer of monocrystalline material is selected from the group consisting of YALO3, CATiO3, Gd3Ga5O12, and Y3Al5O12.
Claim 2
Dependent Claim
25 words
The domain system of claim 1 wherein the strip of bubble domain material is selected from the group consisting of Y3Fe3.8Ga1.2O12, Er3Fe4.3Ga0.7O12, GdFeO3, and YFeO3.
Claim 3
Dependent Claim
24 words
The domain system of claim 3 wherein the layer of monocrystalline material is selected from the group consisting of YAlO3, CaTiO3, Gd3Ga5O12, and Y3Al5O12.
References Cited (Backward Citations)
US3540019A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-17 | 1976-04-17 | 1976-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-17 | 1980-04-17 | 1980-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-17 | 1984-04-17 | 1984-10-17 | $7700.00 | Window Closed / Lapsed |