US3346469A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of selectively coloring titanium bodies
Assignee: Hamburger Flugzeugbau GmbH
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Filing: 1964-07-02
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Granted: 1967-10-10
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Expires: 1984-07-02
Abstract
No abstract record available.
Inventors
- 👤 Weigel Jurgen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:23
CPC Classifications
C; C25; C25D; C25D11/00; C25D11/02; C25D11/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A METHOD OF SELECTIVELY COLORING A SURFACE OF A TITANIUM OR TITANIUM ALLOY BODY CONTAINING AT LEAST 20% BY WEIGHT TITANIUM METAL WITH ANY ONE COLOR WITHIN A RANGE OF COLORATION, COMPRISING THE STEPS OF: JUXTAPOSING SAID BODY WITH A COUNTERELECTRODE WITH SAID SURFACE AND SAID COUNTERELECTRODE IMMERSED IN AT LEAST ONE AQUEOUS ELECTROLYTE FROM THE GROUP OF ELECTROLYTES A AND B, WHEREIN: ELECTROLYTE A CONSISTS ESSENTIALLY OF 22% BY WEIGHT SULFURIC ACID, 2% BY WEIGHT DISSOLVED ALUMIUM, 0.5% BY WEIGHT DISSOLVED COPPER, 0.5% BY WEIGHT DISSOLVED ZINC, AND THE BALANCE WATER, AND
Claim 2
Independent Claim
93 words
A METHOD OF SELECTIVELY COLORING A SURFACE OF A TITANIUM OR TITANIUM ALLOY BODY CONTAINING AT LEAST 20% BY WEIGHT TITANIUM METAL WITH ANY ONE COLOR WITHIN A RANGE OF COLORATION, COMPRISING THE STEPS OF: JUXTAPOSING SAID BODY WITH A COUNTERELECTRODE WITH SAID SURFACE AND SAID COUNTERELECTRODE IMMERSED IN AT LEAST ONE AQUEOUS ELECTROLYTE FROM THE GROUP OF ELECTROLYTES A AND B, WHEREIN: ELECTROLYTE A CONSISTS ESSENTIALLY OF 22% BY WEIGHT SULFURIC ACID, 2% BY WEIGHT DISSOLVED ALUMIUM, 0.5% BY WEIGHT DISSOLVED COPPER, 0.5% BY WEIGHT DISSOLVED ZINC, AND THE BALANCE WATER, AND
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-09 | 1971-04-10 | 1971-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-09 | 1975-04-10 | 1975-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-09 | 1979-04-10 | 1979-10-10 | $7700.00 | Window Closed / Lapsed |