US3223523A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods for improving pressed properties and characteristics of sintered powder metal compacts
Assignee: C K Williams & Co Inc
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Filing: 1963-07-05
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Granted: 1965-12-14
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Expires: 1983-07-05
Abstract
No abstract record available.
Inventors
- 👤 Adler Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:17
CPC Classifications
B; B22; B22F; B22F9/00; B22F9/16; B22F9/18; B22F9/20; B22F9/22; B22F1/00; B22F1/17
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
A PROCESS FOR IMPROVING THE COMPACTING PROPERTIES OF STAINLESS STEEL POWDER WHICH COMPRISES THE STEPS OF UNIFORMLY BLENDING SAID POWDER WITH AN AQUEOUS SOLUTION OF AT LEAST ONE SALT OF A CATION SELECTED FROM THE GROUP CONSISTING OF MOLYBDENUM, COPPER AND NICKEL, THE AMOUNT OF CATION CONSISTING ESSENTIALLY OF 0.5 TO 3.5% BY WEIGHT OFG SAID POWDER, EVAPORATING THE WATER, REDUCING SAID SALT IN AN ATMOSPHERE OF HYDROGEN THEREBY TO PRODUCE A SURFACE COATING ON SAID STAINLESS STEEL POWDER HAVING A SPONGY PROOUS CHARACTERISTIC, COMPACTING SAID POWDER INTO A DESIRED SHAPE AND SUBJECTING THE COMPACTED SHAPE TO SINTERING AT AN ELEVATED SINTERING TEMPERATURE.
Claim 2
Dependent Claim
103 words
A PROCESS FOR IMPROVING THE COMPACTING PROPERTIES OF STAINLESS STEEL POWDER WHICH COMPRISES THE STEPS OF UNIFORMLY BLENDING SAID POWDER WITH AN AQUEOUS SOLUTION OF AT LEAST ONE SALT OF A CATION SELECTED FROM THE GROUP CONSISTING OF MOLYBDENUM, COPPER AND NICKEL, THE AMOUNT OF CATION CONSISTING ESSENTIALLY OF 0.5 TO 3.5% BY WEIGHT OFG SAID POWDER, EVAPORATING THE WATER, REDUCING SAID SALT IN AN ATMOSPHERE OF HYDROGEN THEREBY TO PRODUCE A SURFACE COATING ON SAID STAINLESS STEEL POWDER HAVING A SPONGY PROOUS CHARACTERISTIC, COMPACTING SAID POWDER INTO A DESIRED SHAPE AND SUBJECTING THE COMPACTED SHAPE TO SINTERING AT AN ELEVATED SINTERING TEMPERATURE.
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) | 1968-12-13 | 1969-06-14 | 1969-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-13 | 1973-06-14 | 1973-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-13 | 1977-06-14 | 1977-12-14 | $7700.00 | Window Closed / Lapsed |