Patent US2846295A successfully refreshed from Google Patents.
US2846295A
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Etching bath
Assignee: Mergenthaler Linotype GmbH
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Filing: 1958-01-27
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Granted: 1958-08-05
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Expires: 1978-01-27
Abstract
No abstract record available.
Inventors
- 👤 Robert G Patterson
- 👤 Yamada Yoshikazu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:11
CPC Classifications
C; C23; C23F; C23F1/00; C23F1/10; C23F1/14; C23F1/42; C05; C05F; C05F17/00; C05F17/20; Y; Y02; Y02P; Y02P20/00; Y02P20/141; Y02P20/145; Y02W; Y02W30/00; Y02W30/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
AN ETCHING BATH COMPRISING AN AQUEOUS DISPERSION CONTAINING NITRIC ACID, FROM 1 TO 75% OF A WATER-IMMISCIBLE LIQUID PETROLEUM FRACTION BOILING IN THE RANGE FROM 70 TO 390*C., FROM 0.2 TO 2.5% OF A WATER-SOLUBLE SALT OF A TETRADECYL SULFATE, FROM 0.05 TO 2.5% OF A 1,1,4,4-TETRAALKYL-2-BUTYNE-1,4-DIOL HAVING THE FORMULA:
Claim 2
Dependent Claim
50 words
AN ETCHING BATH COMPRISING AN AQUEOUS DISPERSION CONTAINING NITRIC ACID, FROM 1 TO 75% OF A WATER-IMMISCIBLE LIQUID PETROLEUM FRACTION BOILING IN THE RANGE FROM 70 TO 390*C., FROM 0.2 TO 2.5% OF A WATER-SOLUBLE SALT OF A TETRADECYL SULFATE, FROM 0.05 TO 2.5% OF A 1,1,4,4-TETRAALKYL-2-BUTYNE-1,4-DIOL HAVING THE FORMULA:
References Cited (Backward Citations)
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Cited
US2371646A
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US2447475A
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US2546167A
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US2640765A
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US2763536A
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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) | 1961-08-04 | 1962-02-03 | 1962-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-04 | 1966-02-03 | 1966-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-04 | 1970-02-03 | 1970-08-05 | $7700.00 | Window Closed / Lapsed |