Patent US3420780A successfully refreshed from Google Patents.
US3420780A
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Process for removing the colour from oriented monocrystals
Assignee: Alcatel Lucent SAS
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Filing: 1964-07-30
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Granted: 1969-01-07
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Expires: 1984-07-30
Abstract
No abstract record available.
Inventors
- 👤 Francis Forrat
- 👤 Richard Jansens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:30
CPC Classifications
C; C30; C30B; C30B11/00; C30B11/04; C30B11/08; C30B11/10; C01; C01B; C01B13/00; C01B13/14; C01B13/36; C01B13/363; C01F; C01F17/00; C01F17/30; C01F17/32; C01F17/34; H; H01; H01S; H01S3/00; H01S3/14; H01S3/16; C01P; C01P2002/00; C01P2002/30; C01P2002/34; C01P2004/00; C01P2004/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3257327A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-07 | 1972-07-08 | 1973-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-07 | 1976-07-08 | 1977-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-07 | 1980-07-08 | 1981-01-07 | $7700.00 | Window Closed / Lapsed |