US5736191A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microridge abrasion for selective metalization
Assignee: 3M Co
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Filing: 1997-05-20
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Granted: 1998-04-07
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Expires: 2017-05-20
Abstract
Abstract A process for selective metalization for electrically isolating areas of a substrate is disclosed. The process employs placing microridges onto a surface, the microridge protruding from the plane formed by the surface. The surface, including the microridge, is then metalized and a portion of the metalized microridge, beyond the surface plane is removed. This removal process creates electrically isolated areas without affecting the integrity of the substrate.
Inventors
- 👤 Rolf W. Biernath
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:27
CPC Classifications
H; H01; H01R; H01R13/00; H01R13/02; H01R13/03; H01R13/035; H05; H05K; H05K1/00; H05K1/02; H05K1/11; H05K1/119; H05K3/00; H05K3/02; H05K3/04; H05K3/045; H05K3/30; H05K3/32; H05K3/325; H05K3/326; H05K1/0284; H05K2201/00; H05K2201/09; H05K2201/09009; H05K2201/09036; H05K2201/09045; H05K2201/09081; H05K2201/09118; H05K2201/09818; H05K2201/09827; H05K2201/10; H05K2201/10431; H05K2201/1059; H05K2203/00; H05K2203/02; H05K2203/025; H05K3/10; H05K3/107
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
115 words
A method for electrically isolating areas of a substrate comprising: a) providing an electrically insulating substrate with a major surface comprising a plurality of ridges and grooves, said substrate further comprising at least one sacrificial microridge extending above the surface of the substrate, wherein the at least one microridge is located in a position selected from the group consisting of an a ridge and in a groove; b) applying a conductive coating to overlie at least a portion of the surface of the substrate and said at least one microridge; and c) removing at least a portion of the at least one microridge sufficient to provide electrically isolated areas on the surface of the substrate.
Claim 2
Independent Claim
115 words
A method for electrically isolating areas of a substrate comprising: a) providing an electrically insulating substrate with a major surface comprising a plurality of ridges and grooves, said substrate further comprising at least one sacrificial microridge extending above the surface of the substrate, wherein the at least one microridge is located in a position selected from the group consisting of an a ridge and in a groove; b) applying a conductive coating to overlie at least a portion of the surface of the substrate and said at least one microridge; and c) removing at least a portion of the at least one microridge sufficient to provide electrically isolated areas on the surface of the substrate.
Claim 3
Dependent Claim
18 words
The method of claim 1, wherein said ridges and grooves are linear and arranged side-by-side to each other.
Claim 4
Dependent Claim
12 words
The method of claim 1, wherein said conductive coating is a metal.
Claim 5
Dependent Claim
23 words
The method of claim 1, wherein removing said conductively coated microridge includes techniques selected from the group consisting of cutting, milling, or abrading.
Claim 6
Dependent Claim
16 words
A method as claimed in claim 1, wherein the microridge is substantially semi-circular in cross section.
Claim 7
Dependent Claim
19 words
A method as claimed in claim 1, wherein the microridge has rounded corner where it attaches to the substrate.
References Cited (Backward Citations)
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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) | 2001-04-06 | 2001-10-06 | 2002-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-04-06 | 2005-10-06 | 2006-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-04-06 | 2009-10-06 | 2010-04-07 | $7700.00 | Window Closed / Lapsed |