US3121009A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of etched plates
Assignee: RCA Corp
•
Filing: 1960-03-16
•
Granted: 1964-02-11
•
Expires: 1980-03-16
Abstract
No abstract record available.
Inventors
- 👤 Jr Edward C Giaimo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:38
CPC Classifications
G; G03; G03G; G03G13/00; G03G13/26; G03G13/32; Y; Y10; Y10S; Y10S101/00; Y10S101/37
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
A METHOD OF UTILIZING A BASE PLATE COMPRISING A METAL LAYER CAPABLE OF BEING ENGRAVED WITH AN ETCHANT, SAID LAYER HAVING AN INSULATING COATING THEREON, FOR PRODUCING AN ETCHED PLATE; SAID METHOD COMPRISING THE STEPS OF: ELECTROSTATICALLY PRODUCING A POWDER IMAGE ON SAID INSULATING COATING; FUSING THE POWDER OF SAID IMAGE TO SAID COATED LAYER; REMOVING SUBSTANTIALLY ALL OF THE INSULATING COATING NOT COVERED BY SAID FUSED POWDER; APPLYING RESIST MATERIAL TO SAID IMAGE BEARING LAYER TO PROVIDE A RESIST COATING IN AREAS ON SAID LAYER NOT COVERED BY SAID FUSED POWDER; AND, REMOVING SAID FUSED POWDER AND ETCH-
Claim 2
Independent Claim
99 words
A METHOD OF UTILIZING A BASE PLATE COMPRISING A METAL LAYER CAPABLE OF BEING ENGRAVED WITH AN ETCHANT, SAID LAYER HAVING AN INSULATING COATING THEREON, FOR PRODUCING AN ETCHED PLATE; SAID METHOD COMPRISING THE STEPS OF: ELECTROSTATICALLY PRODUCING A POWDER IMAGE ON SAID INSULATING COATING; FUSING THE POWDER OF SAID IMAGE TO SAID COATED LAYER; REMOVING SUBSTANTIALLY ALL OF THE INSULATING COATING NOT COVERED BY SAID FUSED POWDER; APPLYING RESIST MATERIAL TO SAID IMAGE BEARING LAYER TO PROVIDE A RESIST COATING IN AREAS ON SAID LAYER NOT COVERED BY SAID FUSED POWDER; AND, REMOVING SAID FUSED POWDER AND ETCH-
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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) | 1967-02-10 | 1967-08-12 | 1968-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-10 | 1971-08-12 | 1972-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-10 | 1975-08-12 | 1976-02-11 | $7700.00 | Window Closed / Lapsed |