Patent US2973333A successfully refreshed from Google Patents.
Patent US3337331A successfully refreshed from Google Patents.
US3337331A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrosion resistant steel alloy
Assignee: Santrade Ltd
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Filing: 1965-01-26
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Granted: 1967-08-22
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Expires: 1985-01-26
Abstract
No abstract record available.
Inventors
- 👤 Ljungberg Lars Gustaf Fredrik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:01
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/18; C22C38/40; C22C38/44
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
82 words
STEEL ALLOY HAVING A HIGH RESISTANCE AGAINST CORROSION INCLUDING STRESS CORROSION AND PITTING CORROSION, A HIGH STRENGTH AND GOOD MACHINING AND WELDING PROPERTIES, CHARACTERIZED IN, THAT THE ALLOY BESIDED IRON WITH USUAL IMPURITIES CONSISTS ESSENTIALLY OF UP TO 0.15% CARBON, 15-22% CHROMIUM, 3-8% NICKEL, 1-2.8% SILICON, 0-2.5% MANGANESE, ALTOGETHER NOT MORE THAN 1.5% OF A CARBIDE FORMER SELECTED FROM THE GROUP CONSISTING OF NIOBIUM, TANTALUM AND TITANIUM AND FURTHERMORE 2-4% MOLYBDENUM, THE CONTENTS OF THE ALLOY ELEMENTS BEING DETERMINED BY THE FORMULA
Claim 2
Dependent Claim
82 words
STEEL ALLOY HAVING A HIGH RESISTANCE AGAINST CORROSION INCLUDING STRESS CORROSION AND PITTING CORROSION, A HIGH STRENGTH AND GOOD MACHINING AND WELDING PROPERTIES, CHARACTERIZED IN, THAT THE ALLOY BESIDED IRON WITH USUAL IMPURITIES CONSISTS ESSENTIALLY OF UP TO 0.15% CARBON, 15-22% CHROMIUM, 3-8% NICKEL, 1-2.8% SILICON, 0-2.5% MANGANESE, ALTOGETHER NOT MORE THAN 1.5% OF A CARBIDE FORMER SELECTED FROM THE GROUP CONSISTING OF NIOBIUM, TANTALUM AND TITANIUM AND FURTHERMORE 2-4% MOLYBDENUM, THE CONTENTS OF THE ALLOY ELEMENTS BEING DETERMINED BY THE FORMULA
Claim 3
Dependent Claim
2 words
0>CR+3SI+MO+10TI+4NB +2TA-NI-0.5MN-20C-10N>18.0
Claim 4
Dependent Claim
2 words
0>CR+3SI+MO+10TI+4NB +2TA-NI-0.5MN-20C-10N>18.0
References Cited (Backward Citations)
US2861883A
Cited
US2920954A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-08-21 | 1971-02-20 | 1971-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-21 | 1975-02-20 | 1975-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-21 | 1979-02-20 | 1979-08-22 | $7700.00 | Window Closed / Lapsed |