Patent US3967935A successfully refreshed from Google Patents.
US3967935A
Expired / Lapsed
US
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Corrosion and wear resistant steel sinter alloy
Assignee: Deutsche Edelstahlwerke GmbH
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Filing: 1973-09-05
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Granted: 1976-07-06
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Expires: 1993-09-05
Abstract
Abstract A sinter steel alloy consisting essentially of 20 to 60% of titanium carbide and a completely ferritic steel alloy, matrix of defined composition has good corrosion resistance and enhanced abrasive wear.
Inventors
- 👤 Fritz Frehn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:38
CPC Classifications
C; C22; C22C; C22C33/00; C22C33/02; C22C33/0257; C22C33/0278; C22C33/0292; C22C29/00; C22C29/02; C22C29/06; C22C29/067
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
43 words
A corrosion-resistant and wear-resistant steel sinter alloy consisting essentially of 33% by weight titanium carbide, and 67% by weight of a ferritic steel matrix of the composition: chromium 28.00%
molybdenum 2.00%
copper 0.50%
niobium 0.50%
aluminum 0.60%
titanium 0.30%
boron 0.01%
iron balance.
Claim 2
Dependent Claim
43 words
A corrosion-resistant and wear-resistant steel sinter alloy consisting essentially of 33% by weight titanium carbide, and 67% by weight of a ferritic steel matrix of the composition: chromium 28.00%
molybdenum 2.00%
copper 0.50%
niobium 0.50%
aluminum 0.60%
titanium 0.30%
boron 0.01%
iron balance.
Claim 3
Dependent Claim
45 words
A corrosion-resistant and wear-resistant steel sinter alloy consisting essentially of 33% by weight titanium carbide, and 67% by weight of a ferritic steel matrix of the composition: chromium 35.00%
molybdenum 0.50%
nickel --
copper --
niobium 0.50%
aluminum 0.80%
titanium --
boron 0.02%
iron balance.
Claim 4
Dependent Claim
45 words
A corrosion-resistant and wear-resistant steel sinter alloy consisting essentially of 33% by weight titanium carbide, and 67% by weight of a ferritic steel matrix of the composition: chromium 35.00%
molybdenum 0.50%
nickel --
copper --
niobium 0.50%
aluminum 0.80%
titanium --
boron 0.02%
iron balance.
Claim 5
Dependent Claim
46 words
A corrosion-resistant and wear-resistant steel sinter alloy consisting essentially of 34% by weight titanium carbide, and 67% by weight of a completely ferritic steel matrix of the composition: chromium 28.00%
molybdenum 2.00%
nickel 2.00%
copper 0.50%
niobium --
aluminum 0.40%
titanium 0.25%
boron 0.02%
iron balance.
Claim 6
Dependent Claim
46 words
A corrosion-resistant and wear-resistant steel sinter alloy consisting essentially of 34% by weight titanium carbide, and 67% by weight of a completely ferritic steel matrix of the composition: chromium 28.00%
molybdenum 2.00%
nickel 2.00%
copper 0.50%
niobium --
aluminum 0.40%
titanium 0.25%
boron 0.02%
iron balance.
Claim 7
Dependent Claim
44 words
A corrosion-resistant and wear-resistant steel sinter alloy consisting essentially of 33% by weight titanium carbide, and 67% by weight of a completely ferritic steel matrix of the composition: chromium 28.00%
molybdenum 2.00%
nickel 4.00%
copper 0.50%
niobium 0.30%
aluminum 0.30%
boron 0.02%
iron balance.
Claim 8
Dependent Claim
44 words
A corrosion-resistant and wear-resistant steel sinter alloy consisting essentially of 33% by weight titanium carbide, and 67% by weight of a completely ferritic steel matrix of the composition: chromium 28.00%
molybdenum 2.00%
nickel 4.00%
copper 0.50%
niobium 0.30%
aluminum 0.30%
boron 0.02%
iron balance.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-07-06 | 1980-01-05 | 1980-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-06 | 1984-01-05 | 1984-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-06 | 1988-01-05 | 1988-07-06 | $7700.00 | Window Closed / Lapsed |