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Patent US3707394A successfully refreshed from Google Patents.
US3707394A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dyeing of anodised aluminium
Assignee: Imperial Chemical Industries Ltd
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Filing: 1970-10-19
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Granted: 1972-12-26
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Expires: 1990-10-19
Abstract
Abstract A PROCESS FOR DYEING ANODISED ALUMINIUM WHICH COMPRISES IMMERSING FRESHLY ANODISED ALUMINIUM IN A DYEBATH COMPRISING A BOILING SOLUTION OF A DYESTUFF IN A HALOGENATED HYDROCARBON SOLVENT OR A BOILING EMULSION OF A DYESTUFF, IN A HALOGENATED HYDROCARBON SOLVENT FOR EXAMPLE AN EMULSION OF AN AQUEOUS SOLUTION OF THE DYESTUFF IN THE HALOGENATED HYDROCARBON SOLVENT.
Inventors
- 👤 John Joseph Clementson
- 👤 Dennis Ward Glen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:29
CPC Classifications
C; C25; C25D; C25D11/00; C25D11/02; C25D11/04; C25D11/18; C25D11/24; C25D11/243
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) | 1975-12-26 | 1976-06-26 | 1976-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-26 | 1980-06-26 | 1980-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-26 | 1984-06-26 | 1984-12-26 | $7700.00 | Window Closed / Lapsed |