US3756826A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ating thereto treatment of aluminum preparatory to application of photosensitive co
Assignee: Alcoa Corp
•
Filing: 1971-11-15
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Granted: 1973-09-04
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Expires: 1991-11-15
Abstract
Abstract USE OF AMMONIACAL OR AMINE TARTRATE, CITRATE, MALATE OR THE LIKE AT PH 8.1-9.9 IN ANODIZING ALUMIUMD PREPARATORY TO APPLICATION OF PHOTOSENSITIVE COATING THERETO.
Inventors
- 👤 W Zelley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:05
CPC Classifications
B; B41; B41N; B41N3/00; B41N3/03; B41N3/034; C; C25; C25D; C25D11/00; C25D11/02; C25D11/04; C25D11/06; C25D11/10
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) | 1976-09-03 | 1977-03-05 | 1977-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-03 | 1981-03-05 | 1981-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-03 | 1985-03-05 | 1985-09-04 | $7700.00 | Window Closed / Lapsed |