Patent US2750301A successfully refreshed from Google Patents.
US2750301A
Expired / Lapsed
US
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Method of treating metallic materials
Assignee: Vereinigte Deutsche Metallwerke AG
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Filing: 1953-01-22
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Granted: 1956-06-12
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Expires: 1973-01-22
Abstract
No abstract record available.
Inventors
- 👤 Wenderott Berthold Johannas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:22
CPC Classifications
C; C22; C22F; C22F1/00; C22F1/08; C23; C23G; C23G1/00; C23G1/28
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
84 words
THE METHOD WHICH COMPRISES TREATING METALLIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF ALLOYS OF METALS OF THE IRON GROUP AND ALLOYS OF COPPER WITH ALLOYING ELEMENTS CAPABLE OF FORMING ANIONS IN AN OXIDIZING FUSED SALT BATH, THE MAJOR PORTION OF WHICH IS AN ALKALI METAL HYDROXIDE, TREATING THE THUS OBTAINED METALLIC MATERIAL WITH WATER TO REMOVE ANY ADHERING SALT, THEN ANNEALING THE THUS PRETREATED METALLIC MATERIAL IN A REDUCING ATMOSPHERE AND CLADDING SUCH ANNEALED METALLIC MATERIAL WITH A METAL IN THE SAME HEAT.
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) | 1959-06-12 | 1959-12-12 | 1960-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-12 | 1963-12-12 | 1964-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-12 | 1967-12-12 | 1968-06-12 | $7700.00 | Window Closed / Lapsed |