Patent US4308895A successfully refreshed from Google Patents.
US3342706A
Expired / Lapsed
US
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Method of constructing evaporation masks
Assignee: Individual
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Filing: 1964-01-23
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Granted: 1967-09-19
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Expires: 1984-01-23
Abstract
No abstract record available.
Inventors
- 👤 Liben William
- 👤 Alexander Arnold
- 👤 George A Hillman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:50
CPC Classifications
C; C25; C25D; C25D1/00; C25D1/10; G; G03; G03F; G03F7/00; G03F7/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
A METHOD OF FABRICATING A PERIPHERALLY REINFORCED, SUBSTANTIALLY UNITARY EVAPORATION MASK COMPRISING DEPOSITING A RESIST PATTERN ON A MATRIX PLATE, SAID MATRIX PLATE HAVING A PASSIVATED SURFACE TO WHICH PLATING IS NONADHERENT, AND SAID RESIST PATTERN COMPRISING RESIST MATERIAL DEPOSITED ON SAID SURFACE, DETACHABLY BOLTING A RIGID METAL FRAME RING TO SAID MATRIX PLATE SURROUND SAID RESIST PATTERN AND IN CONTACT WITH SAID SURFACE, ELECTROPLATING A FILM OF THE SAME METAL AS SAID RING ADERENTLY ONTO THE INSIDE OF THE RING AND ACROSS THE CENTRAL APERTURE OF THE RING, WHEREBY TO COVER THE SURFACE INSIDE THE RING EXCEPT FOR SAID RESIST MATERIAL, AND THEN UNBOLTING AND REMOVING THE MATRIX PLATE.
Claim 2
Independent Claim
110 words
A METHOD OF FABRICATING A PERIPHERALLY REINFORCED, SUBSTANTIALLY UNITARY EVAPORATION MASK COMPRISING DEPOSITING A RESIST PATTERN ON A MATRIX PLATE, SAID MATRIX PLATE HAVING A PASSIVATED SURFACE TO WHICH PLATING IS NONADHERENT, AND SAID RESIST PATTERN COMPRISING RESIST MATERIAL DEPOSITED ON SAID SURFACE, DETACHABLY BOLTING A RIGID METAL FRAME RING TO SAID MATRIX PLATE SURROUND SAID RESIST PATTERN AND IN CONTACT WITH SAID SURFACE, ELECTROPLATING A FILM OF THE SAME METAL AS SAID RING ADERENTLY ONTO THE INSIDE OF THE RING AND ACROSS THE CENTRAL APERTURE OF THE RING, WHEREBY TO COVER THE SURFACE INSIDE THE RING EXCEPT FOR SAID RESIST MATERIAL, AND THEN UNBOLTING AND REMOVING THE MATRIX PLATE.
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) | 1970-09-18 | 1971-03-20 | 1971-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-18 | 1975-03-20 | 1975-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-18 | 1979-03-20 | 1979-09-19 | $7700.00 | Window Closed / Lapsed |