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US4448854A
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Coherent multilayer crystals and method of making
Assignee: United States Department of Energy
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Filing: 1982-11-15
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Granted: 1984-05-15
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Expires: 2002-11-15
Abstract
Abstract A new material consisting of a multilayer crystalline structure which is coherent perpendicular to the layers and where each layer is composed of a single crystalline element. The individual layers may vary from 2Å to 100Å or more in thickness.
Inventors
- 👤 Ivan K. Schuller
- 👤 Charles M. Falco
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:41
CPC Classifications
C; C23; C23C; C23C14/00; C23C14/22; C23C14/34; C23C14/3464; C30; C30B; C30B23/00; C30B23/02; C30B29/00; C30B29/60; C30B29/68; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/923; Y10S428/924; Y10S428/926; Y10S505/00; Y10S505/80; Y10S505/812; Y10S505/815; Y10S505/818; Y10T; Y10T428/00; Y10T428/12; Y10T428/12465; Y10T428/12493; Y10T428/12632; Y10T428/12771; Y10T428/12806; Y10T428/12819; Y10T428/12826; Y10T428/1284; Y10T428/12861; Y10T428/12896; Y10T428/12903; Y10T428/12944
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
47 words
A new material comprising a multilayered crystalline structure which is coherent perpendicular to the layers, the structure consisting of a plurality of parallel, ultrathin, alternating, crystalline, epitaxial layers of two different elements, each layer being a single element having a thickness of about 2 to 100 Å.
Claim 2
Dependent Claim
47 words
A new material comprising a multilayered crystalline structure which is coherent perpendicular to the layers, the structure consisting of a plurality of parallel, ultrathin, alternating, crystalline, epitaxial layers of two different elements, each layer being a single element having a thickness of about 2 to 100 Å.
Claim 3
Dependent Claim
36 words
The material of claim 1 wherein the two different elements are pairs selected from the group of niobium and copper, niobium and nickel, niobium and titanium, nickel and molybdenum, nickel and tungsten, and nickel and silver.
Claim 4
Dependent Claim
14 words
The material of claim 1 wherein the two different elements have non-matching lattice structures.
Claim 5
Dependent Claim
33 words
The material of claim 3 wherein the two different elements are pairs selected from the group of niobium and copper, niobium and nickel, niobium and titanium, nickel and molybdenum, and nickel and tungsten.
Claim 6
Dependent Claim
15 words
The material of claim 4 wherein the multilayer crystal is composed of copper and niobium.
Claim 7
Dependent Claim
14 words
The material of claim 4 wherein the multilayer is composed of niobium and nickel.
Claim 8
Dependent Claim
14 words
The material of claim 4 wherein the multilayer is composed of niobium and titanium.
Claim 9
Dependent Claim
14 words
The material of claim 4 wherein the multilayer is composed of nickel and molybdenum.
Claim 10
Dependent Claim
14 words
The material of claim 4 wherein the multilayer is composed of nickel and tungsten.
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) | 1987-05-15 | 1987-11-14 | 1988-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-15 | 1991-11-14 | 1992-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-15 | 1995-11-14 | 1996-05-15 | $7700.00 | Window Closed / Lapsed |