Patent US3585113A successfully refreshed from Google Patents.
US3585113A
Expired / Lapsed
US
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Process for fabricating replicating masters
Assignee: RCA Corp
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Filing: 1969-09-29
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Granted: 1971-06-15
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Expires: 1989-09-29
Abstract
Abstract THE METHOD FOR MAKING A METAL MASTER HAVING A PHASE HOLOGRAM RELIEF PATTERN IN A SURFACE THEROF INCLUDES THE STEPS OF ELECTROLESSLY PLATING THE UNIFORM THIN METAL COATOVER THE SURFACE OF A TAPE HAVING A HOLOGRAM RELIEF PATTERN ON A FIRST SURFACE THEREOF AND A SMOOTH SECOND SURFACE, MASKING THE SECOND SURFACE OF THE TAPE AND THEN ELECTROPLATING A METAL COATING ONTO THE UNMASKED SURFACES OF THE TAPE. THEREAFTER, THE ELECTROPLATED METAL COATING WHICH LIES OVER THE FIRST SURFACE OF THE TAPE IS MASKED AND THEN THE METAL COATINGS WHICH FORMED AROUND THE EDGES OF THE TAPE ARE REMOVED. THE REMAINING METAL COATING IS THEN SEPARATED FROM THE TAPE SO AS TO PROVIDE A METAL MASTER.
Inventors
- 👤 Charles Harry Fletcher Morris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:22
CPC Classifications
G; G03; G03H; G03H1/00; G03H1/02; G03H1/0276; G03H1/028; G11; G11B; G11B23/00; G11B23/0057; G03H2001/0288; G03H2001/0296; G03H1/04; G03H1/18; G03H2001/187
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-14 | 1974-12-14 | 1975-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-14 | 1978-12-14 | 1979-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-14 | 1982-12-14 | 1983-06-15 | $7700.00 | Window Closed / Lapsed |