US3735145A
Expired / Lapsed
US
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Magnetic bubble domain system
Assignee: Boeing North American Inc
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Filing: 1970-10-16
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Granted: 1973-05-22
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Expires: 1990-10-16
Abstract
Abstract A magnetic bubble domain system comprising one or more channels of magnetic bubble domain material on a supporting substrate is described. Any number of these individual magnetic bubble domain channels may be interconnected or connected to a main channel. The movement of bubble domains along a channel is effected by the repulsive or interaction forces between bubble domains which are present in a channel when a bubble domain is formed or propagated near another bubble domain. The movement of bubbles from a given channel into one of several possible adjoining channels to perform a logic function may be directed by the presence or absence of bubbles in one or more connecting channels.
Inventors
- 👤 D Heinz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:59
CPC Classifications
H; H03; H03K; H03K19/00; H03K19/02; H03K19/16; H03K19/168; G; G11; G11C; G11C19/00; G11C19/02; G11C19/08; G11C19/0808; G11C19/0833; G11C19/0875; G11C19/0883; H01; H01F; H01F10/00; H01F10/08; H01F10/10; H01F10/18; H01F10/20; H01F10/22; H01F10/26; H01F10/28
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
107 words
A magnetic bubble domain system comprising a substrate a thin film of magnetic bubble domain material on said substrate; and at least one channel in said film defined by at least one groove extending through said film to the surface of said substrate, the sole bubble domain propagation mechaNism within one of said channels being the mutual repulsion forces between the bubble domains introduced therein, whereby the introduction of a new bubble domain into the one channel repels those already in the channel so that pre-existing bubbles propagate a distance equal to the equilibrium separation between adjacent bubble domains which is determined by their mutual repulsion forces.
Claim 2
Dependent Claim
107 words
A magnetic bubble domain system comprising a substrate a thin film of magnetic bubble domain material on said substrate; and at least one channel in said film defined by at least one groove extending through said film to the surface of said substrate, the sole bubble domain propagation mechaNism within one of said channels being the mutual repulsion forces between the bubble domains introduced therein, whereby the introduction of a new bubble domain into the one channel repels those already in the channel so that pre-existing bubbles propagate a distance equal to the equilibrium separation between adjacent bubble domains which is determined by their mutual repulsion forces.
Claim 3
Dependent Claim
18 words
A magnetic bubble domain system as decribed in claim 1 wherein said channel is defined by two grooves.
Claim 4
Dependent Claim
98 words
A magnetic bubble domain system as described in claim 1 wherein said bubble domain material has a JQ-oxide formulation wherein: the J constituent of said bubble domain material formulation has at least one element selected from the group consisting of cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, lanthanum and yttrium, and the Q constituent of the film formulation is taken from the group consisting of iron, iron and aluminum, iron and gallium, iron and indium, iron and scandium, iron and titanium, iron and vanadium, iron and chromium, and iron and manganese.
Claim 5
Dependent Claim
100 words
A magnetic bubble domain system comprising a substrate, a thin film of magnetic bubble domain material on said substrate, a first channel in said film defined by at least one groove extending through said film to the surface of said substrate, a second channel in said film defined by at least one groove extending through said film to the surface of said substrate connected to said first channel, and magnetic switching devices associated with said first channel adapted to divert the movement of a bubble domain in said first channel to movement of a bubble domain in said second channel.
Claim 6
Dependent Claim
100 words
A magnetic bubble domain system comprising a substrate, a thin film of magnetic bubble domain material on said substrate, a first channel in said film defined by at least one groove extending through said film to the surface of said substrate, a second channel in said film defined by at least one groove extending through said film to the surface of said substrate connected to said first channel, and magnetic switching devices associated with said first channel adapted to divert the movement of a bubble domain in said first channel to movement of a bubble domain in said second channel.
Claim 7
Dependent Claim
116 words
A magnetic bubble domain system comprising a substrate a thin film of magnetic bubble domain material on said substrate, a first channel in said film defined by at least one groove extending through said film to the surface of said substrate, and a second channel in said film defined by at least one groove extending through said film to the surface of said substrate connected to said first channel within the first channel, said second channel being positioned so that the movement of a bubble domain in the first channel will be affected by a bubble domain within the second channel positioned so that it partially extends into the intersection of the first and second channels.
Claim 8
Dependent Claim
116 words
A magnetic bubble domain system comprising a substrate a thin film of magnetic bubble domain material on said substrate, a first channel in said film defined by at least one groove extending through said film to the surface of said substrate, and a second channel in said film defined by at least one groove extending through said film to the surface of said substrate connected to said first channel within the first channel, said second channel being positioned so that the movement of a bubble domain in the first channel will be affected by a bubble domain within the second channel positioned so that it partially extends into the intersection of the first and second channels.
Claim 9
Dependent Claim
129 words
A magnetic bubble domain system comprising a substrate a thin film of magnetic bubble domain material on said substrate; a first channel in said film defined by at least one groove extending through said film to the surface of said substrate; a second channel in said film connected to said first channel and defined by at least one groove extending through said film to the surface of said substrate; and a third channel in said film connected to said first channel and defined by at least one groove extending through said film to the surface of said substrate wherein the direction of the movement of bubble domains in said first channel will be affected by the position of bubble domains in said second channel and in said third channel.
Claim 10
Dependent Claim
129 words
A magnetic bubble domain system comprising a substrate a thin film of magnetic bubble domain material on said substrate; a first channel in said film defined by at least one groove extending through said film to the surface of said substrate; a second channel in said film connected to said first channel and defined by at least one groove extending through said film to the surface of said substrate; and a third channel in said film connected to said first channel and defined by at least one groove extending through said film to the surface of said substrate wherein the direction of the movement of bubble domains in said first channel will be affected by the position of bubble domains in said second channel and in said third channel.
Claim 11
Dependent Claim
80 words
A magnetic bubble domain system comprising a substrate a thin film of magnetic bubble domain material on said substrate; a first channel in said film defined by at least one groove extending through said film to the surface of said substrate; and a plurality of channels connected to said first channel whereby the position of bubble domains in one of said plurality of channels will affect the direction of movement of a bubble domain when it leaves said first channel.
Claim 12
Dependent Claim
80 words
A magnetic bubble domain system comprising a substrate a thin film of magnetic bubble domain material on said substrate; a first channel in said film defined by at least one groove extending through said film to the surface of said substrate; and a plurality of channels connected to said first channel whereby the position of bubble domains in one of said plurality of channels will affect the direction of movement of a bubble domain when it leaves said first channel.
Claim 13
Dependent Claim
133 words
A magnetic bubble domain system comprising a substrate a thin film of magnetic bubble domain material on said substrate, a first channel in said film defined by at least one groove extending through said film to thE surface of said substrate, a second channel in said film defined by at least one groove extending through said film to the surface of said substrate connected to said first channel, and means associated with the intersection of the first and second channels for controlling the diversion of bubble domains from the first channel into the second channel, said means comprising a third bubble domain channel, whereby the presence in the third channel of a bubble domain extending into the intersection of the channels will divert bubble domains from the first channel into the second channel.
Claim 14
Dependent Claim
133 words
A magnetic bubble domain system comprising a substrate a thin film of magnetic bubble domain material on said substrate, a first channel in said film defined by at least one groove extending through said film to thE surface of said substrate, a second channel in said film defined by at least one groove extending through said film to the surface of said substrate connected to said first channel, and means associated with the intersection of the first and second channels for controlling the diversion of bubble domains from the first channel into the second channel, said means comprising a third bubble domain channel, whereby the presence in the third channel of a bubble domain extending into the intersection of the channels will divert bubble domains from the first channel into the second channel.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-21 | 1976-11-20 | 1977-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-21 | 1980-11-20 | 1981-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-21 | 1984-11-20 | 1985-05-22 | $7700.00 | Window Closed / Lapsed |