Patent US4492738A successfully refreshed from Google Patents.
US4492738A
Expired / Lapsed
US
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Diffraction grating wire arrays in series
Assignee: Intersil Corp
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Filing: 1983-12-05
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Granted: 1985-01-08
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Expires: 2003-12-05
Abstract
Abstract Arrays of substantially parallel metallic wires of micron and sub-micron dimensions are made by directionally solidifying the components of a eutectic alloy system as a thin film and subsequently removing at least one of the phases. The arrays are useful, for example, as conductors in microelectronic devices and as diffraction gratings for electromagnetic and ultrasonic waves.
Inventors
- 👤 Harvey E. Cline
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:59
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/10; C; C25; C25F; C25F3/00; C25F3/02; C30; C30B; C30B21/00; C30B21/02; C30B29/00; C30B29/10; C30B29/52; C30B33/00; H01; H01S; H01S5/00; H01S5/10; H01S5/12; H10; H10W; H10W20/00; H10W20/01; H10W20/031; H10W20/064; H10W20/065; H10W20/067; H10W20/068; H10W20/40; H10W20/41; H10W20/44; H10W20/4403; H10W20/4405; H10W20/4407; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12465
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
162 words
A diffraction grating situate on a substrate comprising a plurality of eutectic fine wire arrays in series, said grating comprising: (1) a first region of substantially mutually parallel wires situated on said substrate, said wires of said first region having a composition substantially corresponding to at least one phase of a eutectic alloy system, a first interwire spacing and a first width measured along a plane parallel to the plane of said substrate; (2) at least a second region of substantially mutually parallel wires situated on said substrate, said wires of said second region having the same composition as the wires of said first region, a second interwire spacing and a second width measured along a plane parallel to the plane of said substrate; and (3) a transition region between said first and second regions, at least some of said wires of said second region being contiguous with at least some of said wires of said first region across said transition region.
Claim 2
Dependent Claim
162 words
A diffraction grating situate on a substrate comprising a plurality of eutectic fine wire arrays in series, said grating comprising: (1) a first region of substantially mutually parallel wires situated on said substrate, said wires of said first region having a composition substantially corresponding to at least one phase of a eutectic alloy system, a first interwire spacing and a first width measured along a plane parallel to the plane of said substrate; (2) at least a second region of substantially mutually parallel wires situated on said substrate, said wires of said second region having the same composition as the wires of said first region, a second interwire spacing and a second width measured along a plane parallel to the plane of said substrate; and (3) a transition region between said first and second regions, at least some of said wires of said second region being contiguous with at least some of said wires of said first region across said transition region.
Claim 3
Dependent Claim
23 words
The grating of claim 1 wherein said composition of said wires corresponds substantially to the aluminum-rich phase of the Al-CuAl 2 eutectic system.
Claim 4
Dependent Claim
24 words
The grating of claim 1 wherein the material of said substrate is one selected from the group consisting of glass, mica, silicon, and alumina.
Claim 5
Dependent Claim
22 words
The grating of claim 1 wherein said composition of said wires corresponds substantially to the lead-rich phase of the lead-cadmium eutectic system.
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) | 1988-01-08 | 1988-07-09 | 1989-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-01-08 | 1992-07-09 | 1993-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-01-08 | 1996-07-09 | 1997-01-08 | $7700.00 | Window Closed / Lapsed |