Patent US3728697A successfully refreshed from Google Patents.
US3728697A
Expired / Lapsed
US
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Bubble domain system
Assignee: Boeing North American Inc
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Filing: 1970-12-21
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Granted: 1973-04-17
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Expires: 1990-12-21
Abstract
Abstract A bubble domain system of magnetic material having a portion containing small diameter bubble domains and an adjacent portion having larger diameter bubble domains. A method for forming large diameter bubble domains in a magnetic material containing small diameter bubble domains is also included.
Inventors
- 👤 D Heinz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:31
CPC Classifications
H; H01; H01F; H01F10/00; G; G11; G11C; G11C19/00; G11C19/02; G11C19/08; G11C19/0858; H01F10/08; H01F10/10; H01F10/18; H01F10/20; H01F10/24
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
84 words
In a bubble domain system, the combination of a first portion of magnetic bubble domain material having a magnetization of a first level determined by the properties of the material wherein bubble domains having a first minimum diameter are permitted and a second portion of magnetic bubble domain material adjacent to said first portion, said second portion having a level of magnetization determined by the properties of the material different than said first portion wherein bubble domains having a second minimum diameter are permitted.
Claim 2
Dependent Claim
84 words
In a bubble domain system, the combination of a first portion of magnetic bubble domain material having a magnetization of a first level determined by the properties of the material wherein bubble domains having a first minimum diameter are permitted and a second portion of magnetic bubble domain material adjacent to said first portion, said second portion having a level of magnetization determined by the properties of the material different than said first portion wherein bubble domains having a second minimum diameter are permitted.
Claim 3
Dependent Claim
52 words
A combination as described in claim 1 including a third portion of magnetic bubble domain material adjacent to said second portion, said third portion having a magnetization level different from said second portion and similar to the magnetization level of said first portion wherein bubble domains having said first diameter are permitted.
Claim 4
Dependent Claim
17 words
A bubble domain system as recited in claim 1 including generator means associated with said first portion.
Claim 5
Dependent Claim
17 words
A bubble domain system as recited in claim 1 including detector means associated with said first portion.
Claim 6
Dependent Claim
104 words
In a bubble domain system, the combination of a first portion of bubble domain material having a first level of magnetization, a generator associated with said first portion suitable for generating a bubble domain in said first portion, a second portion of bubble domain material associated with said first portion, said second portion having a magnetization level higher than said first portion, a third portion of bubble domain material associated with said second portion, said third portion having a magnetization level lower than said second portion, and a detector associated with said third portion suitable for detecting a bubble domain in said third portion.
Claim 7
Dependent Claim
104 words
In a bubble domain system, the combination of a first portion of bubble domain material having a first level of magnetization, a generator associated with said first portion suitable for generating a bubble domain in said first portion, a second portion of bubble domain material associated with said first portion, said second portion having a magnetization level higher than said first portion, a third portion of bubble domain material associated with said second portion, said third portion having a magnetization level lower than said second portion, and a detector associated with said third portion suitable for detecting a bubble domain in said third portion.
Claim 8
Dependent Claim
66 words
A bubble domain structure comprising a single crystal substrate, a film of single crystal magnetic material, said film having a first portion and a second portion, said first portion having a magnetization of a first level, and said second portion having a level of magNetization different than said first portion, said magnetization levels defining magnetic properties wherein bubble domains of different minimum diameters are established therein.
Claim 9
Dependent Claim
66 words
A bubble domain structure comprising a single crystal substrate, a film of single crystal magnetic material, said film having a first portion and a second portion, said first portion having a magnetization of a first level, and said second portion having a level of magNetization different than said first portion, said magnetization levels defining magnetic properties wherein bubble domains of different minimum diameters are established therein.
Claim 10
Independent Claim
56 words
A method of forming a bubble domain system comprising the steps of forming a layer of single crystal magnetic material on a suitable substrate such that a first portion thereof has a magnetization characteristic of a first level and a second portion thereof has a magnetization characteristic of a second level different from said first portion.
Claim 11
Independent Claim
56 words
A method of forming a bubble domain system comprising the steps of forming a layer of single crystal magnetic material on a suitable substrate such that a first portion thereof has a magnetization characteristic of a first level and a second portion thereof has a magnetization characteristic of a second level different from said first portion.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-16 | 1976-10-16 | 1977-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-16 | 1980-10-16 | 1981-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-16 | 1984-10-16 | 1985-04-17 | $7700.00 | Window Closed / Lapsed |