US2570299A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Porcelain enameling process
Assignee: Metalwash Machinery Co
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Filing: 1947-02-14
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Granted: 1951-10-09
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Expires: 1967-02-14
Abstract
No abstract record available.
Inventors
- 👤 Erich R Zademach
- 👤 William W Clarke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:34
CPC Classifications
C; C23; C23D; C23D3/00; C23G; C23G1/00; C23G1/02; C23G1/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
A PROCESS FOR PORCELAIN ENAMELING A FERROUS OBJECT IN WHICH A LAYER OF NICKEL IS FIRST DEPOSITED THEREON AND THE PORCELAIN ENAMELING SUBSEQUENTLY FORMED ON SAID NICKEL LAYER, THE IMPROVEMENT WHICH COMPRISES CONVEYING A SUBSTANTIALLY VERTICALLY DISPOSED FERROUS OBJECT THROUGH A DIRECTED MIST OF AN AQUEOUS SOLUTION OF A NICKEL SALT HAVING AN ANION CAPABLE OF UNITING WITH THE METAL IN SAID OBJECT, SAID OBJECT BEING SUBJECTED TO SAID MIST FOR A PERIOD OF AT LEAST THREE MINUTES, SAID AQUEOUS SOLUTION BEING AT A TEMPERATURE OF APPROXIMATELY 175* F., AND DRAINING THE EXCESS SOLUTION FROM SAID OBJECT BY GRAVITY FLOW.
Claim 2
Dependent Claim
100 words
A PROCESS FOR PORCELAIN ENAMELING A FERROUS OBJECT IN WHICH A LAYER OF NICKEL IS FIRST DEPOSITED THEREON AND THE PORCELAIN ENAMELING SUBSEQUENTLY FORMED ON SAID NICKEL LAYER, THE IMPROVEMENT WHICH COMPRISES CONVEYING A SUBSTANTIALLY VERTICALLY DISPOSED FERROUS OBJECT THROUGH A DIRECTED MIST OF AN AQUEOUS SOLUTION OF A NICKEL SALT HAVING AN ANION CAPABLE OF UNITING WITH THE METAL IN SAID OBJECT, SAID OBJECT BEING SUBJECTED TO SAID MIST FOR A PERIOD OF AT LEAST THREE MINUTES, SAID AQUEOUS SOLUTION BEING AT A TEMPERATURE OF APPROXIMATELY 175* F., AND DRAINING THE EXCESS SOLUTION FROM SAID OBJECT BY GRAVITY FLOW.
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) | 1954-10-08 | 1955-04-09 | 1955-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-08 | 1959-04-09 | 1959-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-08 | 1963-04-09 | 1963-10-09 | $7700.00 | Window Closed / Lapsed |