Patent US3416657A successfully refreshed from Google Patents.
Patent US3234044A successfully refreshed from Google Patents.
US3234044A
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Use of an electron beam for manufacturing conductive patterns
Assignee: Unisys Corp
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Filing: 1962-09-25
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Granted: 1966-02-08
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Expires: 1982-09-25
Abstract
No abstract record available.
Inventors
- 👤 Ralph V Andes
- 👤 Erwin G Weber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:27
CPC Classifications
B; B23; B23K; B23K15/00; H; H01; H01J; H01J37/00; H01J37/30; H01J37/317; Y; Y10; Y10S; Y10S428/00; Y10S428/901; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/108; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49124; Y10T29/49155
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A METHOD FOR MANUFACTURING THE CONDUCTIVE PATTERN OF A PRINTED CIRCUIT CARD INCLUDING THE STEPS OF: (A) COATING AN ELECTRICALLY INSULATING BASE MEMBER WITH A LYER OF A METALLIC MATERIAL; (B) SUBJECTING A PREDETERMINED PORTION OF THE METALLIC MATERIAL TO THE ACTION OF A BEAM OF ELECTONS HAVING AN ENERGY LEVEL EXCEEDING THAT RQUIRED TO FUSE THE METALLIC MATERIAL AND A PORTION OF THE SURFACE OF SAID BASE MEMBER FOR CAUSING THE PREETERMINED PORTIONS OF MELT; (C) PREMITTING THE MELTED PORTIONS TO FREEZE TOGETHER; (D) AND THEREAFTER REMOVING ANY METALLIC MATERIAL NOT EXPOSED TO THE BEAM OF ELECTRONS.
Claim 2
Independent Claim
98 words
A METHOD FOR MANUFACTURING THE CONDUCTIVE PATTERN OF A PRINTED CIRCUIT CARD INCLUDING THE STEPS OF: (A) COATING AN ELECTRICALLY INSULATING BASE MEMBER WITH A LYER OF A METALLIC MATERIAL; (B) SUBJECTING A PREDETERMINED PORTION OF THE METALLIC MATERIAL TO THE ACTION OF A BEAM OF ELECTONS HAVING AN ENERGY LEVEL EXCEEDING THAT RQUIRED TO FUSE THE METALLIC MATERIAL AND A PORTION OF THE SURFACE OF SAID BASE MEMBER FOR CAUSING THE PREETERMINED PORTIONS OF MELT; (C) PREMITTING THE MELTED PORTIONS TO FREEZE TOGETHER; (D) AND THEREAFTER REMOVING ANY METALLIC MATERIAL NOT EXPOSED TO THE BEAM OF ELECTRONS.
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) | 1969-02-07 | 1969-08-09 | 1970-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-07 | 1973-08-09 | 1974-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-07 | 1977-08-09 | 1978-02-08 | $7700.00 | Window Closed / Lapsed |