US3512964A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing a ferrous sintered article
Assignee: Vibrantz Corp
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Filing: 1965-07-22
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Granted: 1970-05-19
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Expires: 1985-07-22
Abstract
No abstract record available.
Inventors
- 👤 Charles H Fuchsman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:52
CPC Classifications
C; C22; C22C; C22C33/00; C22C33/02; C22C33/0257; C22C33/0264; C22C33/0207; C22C33/0221
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
THE METHOD OF PRODUCING A SINTERED FERROUS ARTICLE COMPRISING THE STEPS OF: (A) THOROUGHLY ADMIXING FROM ABOUT 0.1% TO ABOUT 0.5% ELEMENTAL SULFUR AND ABOUT 0.1% TO ABOUT 0.7% COPPER, WITH POWDERED IRON PARTICLES, SAID PERCENTAGES OF SULFUR AND COPPER BASED ON THE WEIGHT OF SAID IRON, PRIOR TO SINTERING, (B) COMPACTING SAID ADMIXTURE INTO A COHERENT SHAPE AT AT LEAST 50,000 P.S.I., AND SINTERING, IN A SUBSTANTIALLY NONXOIDIZING ATMOSPHERE, SAID COMPACTED SHAPE, TO PROVIDE A FERROUS ARTICLE HAVING IMPROVED STRENGTH.
Claim 2
Independent Claim
81 words
THE METHOD OF PRODUCING A SINTERED FERROUS ARTICLE COMPRISING THE STEPS OF: (A) THOROUGHLY ADMIXING FROM ABOUT 0.1% TO ABOUT 0.5% ELEMENTAL SULFUR AND ABOUT 0.1% TO ABOUT 0.7% COPPER, WITH POWDERED IRON PARTICLES, SAID PERCENTAGES OF SULFUR AND COPPER BASED ON THE WEIGHT OF SAID IRON, PRIOR TO SINTERING, (B) COMPACTING SAID ADMIXTURE INTO A COHERENT SHAPE AT AT LEAST 50,000 P.S.I., AND SINTERING, IN A SUBSTANTIALLY NONXOIDIZING ATMOSPHERE, SAID COMPACTED SHAPE, TO PROVIDE A FERROUS ARTICLE HAVING IMPROVED STRENGTH.
References Cited (Backward Citations)
US3120699A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-18 | 1973-11-17 | 1974-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-18 | 1977-11-17 | 1978-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-18 | 1981-11-17 | 1982-05-19 | $7700.00 | Window Closed / Lapsed |