US3179543A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing plates having funnel-shaped cavities or perforations obtained by etching
Assignee: US Philips Corp
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Filing: 1962-03-09
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Granted: 1965-04-20
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Expires: 1982-03-09
Abstract
No abstract record available.
Inventors
- 👤 Marcelis Flores Pieter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:31
CPC Classifications
H; H10; H10D; H10D62/00; H10D62/01; C; C23; C23F; C23F1/00; C23F1/02; B; B26; B26B; B26B19/00; B26B19/38; B26B19/384; C23F1/04; H01; H01H; H01H11/00; H01H11/04; H10P; H10P50/00; Y; Y10; Y10S; Y10S438/00; Y10S438/978
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
176 words
A METHOD OF MAKING APERTURES THROUGH A PLATE COMPRISING COVERING THE UNDERSIDE OF SAID PLATE WITH A CONTINUOUS ETCHING RESIST AND COVERING THE UPPER SIDE OF SAID PLATE WITH AN UPPER ETCHING RESIST HAVING A PLURALITY OF HOLES ABOVE THE AREA ON SAID PLATE WHERE SAID APERTURES ARE TO BE MADE THERETHROUGH, PROVIDING SLIT-LIKE OPENINGS ON SAID RESIST AROUND SAID HOLES AND EACH BEING SPACED FROM SAID HOLES BY AN ETCHING RESIST STRIP HAVING A WIDTH SMALLER THAN TWICE THE THICKNESS OF THE PORTION OF SAID PLATE BETWEEN THE EDGE OF SAID HOLE AND SAID SLIT-LIKE OPENING, ETCHING SAID AREA OF SAID PLATE BELOW SAID HOLES AND ETCHING THE AREA BELOW SAID SLIT-LIKE OPENINGS, SAID ETCHED AREA BELOW SAID SLIT-LIKE OPENINGS HAVING A DEPTH SMALLER THAN THE DEPTH OF THE ETCHED AREA BELOW SAID HOLES AND BEING SEPARATE THEREFROM, AND FURTHER ETCHING THE AREA OF SAID PLATE DIRECTLY UNDER SAID ETCHING RESIST STRIP WHEREBY THE LATTER IS SUBSEQUENTLY DETACHED FROM SAID UPPER ETCHING RESIST AND SAID ETCHED AREAS ARE UNITED TO FORM A FUNNEL-SHAPED SINGLE APERTURE.
Claim 2
Independent Claim
176 words
A METHOD OF MAKING APERTURES THROUGH A PLATE COMPRISING COVERING THE UNDERSIDE OF SAID PLATE WITH A CONTINUOUS ETCHING RESIST AND COVERING THE UPPER SIDE OF SAID PLATE WITH AN UPPER ETCHING RESIST HAVING A PLURALITY OF HOLES ABOVE THE AREA ON SAID PLATE WHERE SAID APERTURES ARE TO BE MADE THERETHROUGH, PROVIDING SLIT-LIKE OPENINGS ON SAID RESIST AROUND SAID HOLES AND EACH BEING SPACED FROM SAID HOLES BY AN ETCHING RESIST STRIP HAVING A WIDTH SMALLER THAN TWICE THE THICKNESS OF THE PORTION OF SAID PLATE BETWEEN THE EDGE OF SAID HOLE AND SAID SLIT-LIKE OPENING, ETCHING SAID AREA OF SAID PLATE BELOW SAID HOLES AND ETCHING THE AREA BELOW SAID SLIT-LIKE OPENINGS, SAID ETCHED AREA BELOW SAID SLIT-LIKE OPENINGS HAVING A DEPTH SMALLER THAN THE DEPTH OF THE ETCHED AREA BELOW SAID HOLES AND BEING SEPARATE THEREFROM, AND FURTHER ETCHING THE AREA OF SAID PLATE DIRECTLY UNDER SAID ETCHING RESIST STRIP WHEREBY THE LATTER IS SUBSEQUENTLY DETACHED FROM SAID UPPER ETCHING RESIST AND SAID ETCHED AREAS ARE UNITED TO FORM A FUNNEL-SHAPED SINGLE APERTURE.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-19 | 1968-10-19 | 1969-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-19 | 1972-10-19 | 1973-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-19 | 1976-10-19 | 1977-04-20 | $7700.00 | Window Closed / Lapsed |