Patent US4801476A successfully refreshed from Google Patents.
US4801476A
Expired / Lapsed
US
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Method for production of large area 2-dimensional arrays of close packed colloidal particles
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1987-09-03
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Granted: 1989-01-31
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Expires: 2007-09-03
Abstract
Abstract A method is described which details the preparation of large area close packed monolayers of colloidal particles from random distributions of colloidal particles by compressing the random network.
Inventors
- 👤 John H. Dunsmuir
- 👤 Harry W. Deckman
- 👤 James A. McHenry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:08
CPC Classifications
B; B05; B05D; B05D1/00; B05D1/18; B05D1/20
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
73 words
A method of producing a close packed coating of non-amphiphillic colloidal particles on a substrate comprising: (a) forming a monolayer of said non-amphiphillic particles at a surface of a first liquid, wherein said monolayer includes only non-amphiphillic particles, (b) compressing said monolayer of said non-amphiphillic particles on said surface of said first liquid, (c) removing the compressed layer from said surface of said first liquid onto a substrate, and (d) drying and substrate.
Claim 2
Independent Claim
73 words
A method of producing a close packed coating of non-amphiphillic colloidal particles on a substrate comprising: (a) forming a monolayer of said non-amphiphillic particles at a surface of a first liquid, wherein said monolayer includes only non-amphiphillic particles, (b) compressing said monolayer of said non-amphiphillic particles on said surface of said first liquid, (c) removing the compressed layer from said surface of said first liquid onto a substrate, and (d) drying and substrate.
Claim 3
Dependent Claim
34 words
The method of claim 1 wherein said forming step comprises immersing a random colloidal layer having voids into said first liquid such that said layer becomes trapped at said surface of said first liquid.
Claim 4
Dependent Claim
47 words
The method of claim 1 wherein said forming step comprises placing a second liquid including a suspension of particles onto said first liquid wherein said second liquid is immiscible with said first liquid, said second liquid and said suspension spreading over the surface of said first liquid.
Claim 5
Dependent Claim
27 words
The method of claim 1 wherein said compressing step comprises moving a mechanical barrier against said layer of particles so as to remove intervening spaces between particles.
Claim 6
Dependent Claim
35 words
The method of claim 1 wherein said compressing step comprises depositing a piston oil onto said surface of said first liquid so that said piston oil spreads across said surface compressing intervening spaces between particles.
Claim 7
Dependent Claim
17 words
The method of claim 5 where said forming step and said compressing step comprises a single step.
Claim 8
Dependent Claim
17 words
The method of claim 1 wherein compressing step produces a predetermined pattern of said monolayer of particles.
Claim 9
Dependent Claim
11 words
The method of claim 1 wherein said colloidal particles are monodisperse.
Claim 10
Dependent Claim
11 words
The method of claim 1 wherein said first liquid is water.
Claim 11
Dependent Claim
15 words
The method of claim 1 where the colloidal particles are between 0.1 and 5 μm.
Claim 12
Dependent Claim
11 words
The method of claim 1 wherein said colloidal particles are polymeric.
Claim 13
Dependent Claim
12 words
The method of claim 1 wherein said substrate is not water wet.
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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) | 1992-01-31 | 1992-08-01 | 1993-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-01-31 | 1996-08-01 | 1997-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-01-31 | 2000-08-01 | 2001-01-31 | $7700.00 | Window Closed / Lapsed |