US3326728A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Colored aluminum and process therefor
Assignee: Olin Corp
•
Filing: 1963-08-06
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Granted: 1967-06-20
•
Expires: 1983-08-06
Abstract
No abstract record available.
Inventors
- 👤 Martin A Robinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:58
CPC Classifications
C; C25; C25D; C25D11/00; C25D11/02; C25D11/04; C25D11/18; C25D11/24; C25D11/243
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
PROCESS FOR APPLYING TO ANODIZED ALUMINUM A STRONGLY ADHERENT, LIGHT-FAST, COLORED COATING, SAID PROCESS COMPRISING HEATING SAID ANODIZED ALUMINUM IN CONTACT WITH PHTHALOCYANINE-FORMING REACTANTS SELECTED FROM THE GROUP CONSISTING OF PHTHALIC ANHYDRIDE, PHTHALONITRILE AND PHTHALAMIDE IN A SOLVENT BOILING BETWEEN 175* AND 250*C. FOR AT LEAST ONE HOUR.
Claim 2
Dependent Claim
48 words
PROCESS FOR APPLYING TO ANODIZED ALUMINUM A STRONGLY ADHERENT, LIGHT-FAST, COLORED COATING, SAID PROCESS COMPRISING HEATING SAID ANODIZED ALUMINUM IN CONTACT WITH PHTHALOCYANINE-FORMING REACTANTS SELECTED FROM THE GROUP CONSISTING OF PHTHALIC ANHYDRIDE, PHTHALONITRILE AND PHTHALAMIDE IN A SOLVENT BOILING BETWEEN 175* AND 250*C. FOR AT LEAST ONE HOUR.
References Cited (Backward Citations)
CA689662A
Cited
US2163768A
Cited
US3023164A
Cited
US2975081A
Cited
US3114660A
Cited
US3026220A
Cited
US3066054A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-06-19 | 1970-12-19 | 1971-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-19 | 1974-12-19 | 1975-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-19 | 1978-12-19 | 1979-06-20 | $7700.00 | Window Closed / Lapsed |