US3307939A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrosion-resisting cobalt-chromium-tungsten alloys
Assignee: Gebrueder Boehler and Co AG
•
Filing: 1964-06-02
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Granted: 1967-03-07
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Expires: 1984-06-02
Abstract
No abstract record available.
Inventors
- 👤 Baumel Anton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:27
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/30; B23K35/3046; C; C22; C22C; C22C19/00; C22C19/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
30 words
A CORROSION-RESISTING COBALT-CHROMIUM-TUNGSTEN ALLOY CONSISTING ESSENTIALLY OF 2.2-2.5% CARBON, 30-32% CHROMIUM, 13-20% TUNGSTEN, 39-47% COBALT, UP TO 1% MANGANESE, UP TO 1% SILICON, 0.3-6% COPPER AND UP TO 6% MOLYBDENUM.
Claim 2
Dependent Claim
30 words
A CORROSION-RESISTING COBALT-CHROMIUM-TUNGSTEN ALLOY CONSISTING ESSENTIALLY OF 2.2-2.5% CARBON, 30-32% CHROMIUM, 13-20% TUNGSTEN, 39-47% COBALT, UP TO 1% MANGANESE, UP TO 1% SILICON, 0.3-6% COPPER AND UP TO 6% MOLYBDENUM.
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) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |