US2772187A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Porcelain enameling
Assignee: General Ceramics Corp
•
Filing: 1954-06-02
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Granted: 1956-11-27
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Expires: 1974-06-02
Abstract
No abstract record available.
Inventors
- 👤 Joseph M Katz
- 👤 Hurst Erwin
- 👤 Jakubczak Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:51
CPC Classifications
C; C03; C03C; C03C8/00; C23; C23D; C23D5/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
IN THE PROCESS OF ENAMELING METAL SURFACES THE STEPS COMPRISING PROVIDING A PORCELAIN ENAMEL SLIP COMPRISING WATER AS A SUSPENDING MEDIUM, ADDING OXGALL TO THE SLIP, APPLYING A THIN LAYER OF THE SLIP TO A CLEANED METAL SURFACE TO BE ENAMELED AND DRYING AND FIRING SAID COATED PRODUCT WHEREBY TO PRODUCE A PROCELAIN ENAMELED METAL WHICH IS SUBSTANTIALLY FREE FROM THE DEFECTS OF RUN-OFF, SHINERS AND BLABS.
Claim 2
Dependent Claim
67 words
IN THE PROCESS OF ENAMELING METAL SURFACES THE STEPS COMPRISING PROVIDING A PORCELAIN ENAMEL SLIP COMPRISING WATER AS A SUSPENDING MEDIUM, ADDING OXGALL TO THE SLIP, APPLYING A THIN LAYER OF THE SLIP TO A CLEANED METAL SURFACE TO BE ENAMELED AND DRYING AND FIRING SAID COATED PRODUCT WHEREBY TO PRODUCE A PROCELAIN ENAMELED METAL WHICH IS SUBSTANTIALLY FREE FROM THE DEFECTS OF RUN-OFF, SHINERS AND BLABS.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-27 | 1960-05-28 | 1960-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-27 | 1964-05-28 | 1964-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-27 | 1968-05-28 | 1968-11-27 | $7700.00 | Window Closed / Lapsed |