US2851354A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of forming sintered sheets having copper infiltrated portions
Assignee: Schwarzkopf Technologies Corp
•
Filing: 1954-01-13
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Granted: 1958-09-09
•
Expires: 1974-01-13
Abstract
No abstract record available.
Inventors
- 👤 Joseph P Scanlan
- 👤 Alter Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:53
CPC Classifications
B; B22; B22F; B22F3/00; B22F3/24; B22F3/26; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/1216; Y10T428/12431; Y10T428/12438
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
THE PROCESS OF FORMING A SHEET OF SINTERED FERROUS PARTICLES HAVING A POROUS REGION AND A FURTHER REGION THE PORES OF WHICH ARE INFILTRATED BY A COPPER INFILTRANT, WHICH PROCESS COMPRISES THE STEPS OF COATING FERROUS METAL PARTICLES WITH A THERMOSETTING RESIN WHICH IS SOLUBLE IN A VOLATILIZABLE SOLVENT, DEPOSITING THE SO-COATED FERROUS PARTICLES ON A CONTINUOUS SUPPORT SURFACE FOR FORMING OUT OF THE COATED PARTICLES A CONTINUOUS FERROUS SHEET, AND WHILE SO DEPOSITING THE COATED FERROUS PARTICLES ON SUCH SUPPORT SURFACE, DEPOSITING ON AN INTERMEDIATE NARROW REGION OF SAID SUPPORT SURFACE FERROUS PARTICLES CONTAINING ABOVE ABOUT 2% SILVER ADMIXED THEREWITH FOR PROVIDING A NARROW SILVER-CONTAINING BARRIER REGION SEPARATING ONE SHEET REGION OF THE DEPOSITED FERROUS SHEET FROM A FURTHER SHEET REGION OF THE DEPOSITED FERROUS SHEET, HEAT-TREATING THE SO-DEPOSITED FERROUS SHEET TO CURE ITS RESIN CONTENT AND
Claim 2
Dependent Claim
138 words
THE PROCESS OF FORMING A SHEET OF SINTERED FERROUS PARTICLES HAVING A POROUS REGION AND A FURTHER REGION THE PORES OF WHICH ARE INFILTRATED BY A COPPER INFILTRANT, WHICH PROCESS COMPRISES THE STEPS OF COATING FERROUS METAL PARTICLES WITH A THERMOSETTING RESIN WHICH IS SOLUBLE IN A VOLATILIZABLE SOLVENT, DEPOSITING THE SO-COATED FERROUS PARTICLES ON A CONTINUOUS SUPPORT SURFACE FOR FORMING OUT OF THE COATED PARTICLES A CONTINUOUS FERROUS SHEET, AND WHILE SO DEPOSITING THE COATED FERROUS PARTICLES ON SUCH SUPPORT SURFACE, DEPOSITING ON AN INTERMEDIATE NARROW REGION OF SAID SUPPORT SURFACE FERROUS PARTICLES CONTAINING ABOVE ABOUT 2% SILVER ADMIXED THEREWITH FOR PROVIDING A NARROW SILVER-CONTAINING BARRIER REGION SEPARATING ONE SHEET REGION OF THE DEPOSITED FERROUS SHEET FROM A FURTHER SHEET REGION OF THE DEPOSITED FERROUS SHEET, HEAT-TREATING THE SO-DEPOSITED FERROUS SHEET TO CURE ITS RESIN CONTENT AND
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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) | 1961-09-08 | 1962-03-10 | 1962-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-08 | 1966-03-10 | 1966-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-08 | 1970-03-10 | 1970-09-09 | $7700.00 | Window Closed / Lapsed |