US3361588A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite devitrified-vitrified enamel coating
Assignee: Individual
•
Filing: 1964-12-07
•
Granted: 1968-01-02
•
Expires: 1984-12-07
Abstract
No abstract record available.
Inventors
- 👤 Scharbach Heinz
- 👤 Horsch Rudi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:36
CPC Classifications
C; C23; C23D; C23D5/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
A PORCELAIN ENAMEL COMPOSITE COMPRISING A METAL BASE AND AN ENAMEL PROTECTIVE COATING OF AT LEAST ONE LAYER OF A CRYSTALLISED ENAMEL AND AT LEAST ONE LAYER OF A VITRIFIED COVER COAT ENAMEL, SAID LAYERS BEING APPLIED AND FUSED IN SUCCESSION IN THE ORDER STATED.
Claim 2
Dependent Claim
45 words
A PORCELAIN ENAMEL COMPOSITE COMPRISING A METAL BASE AND AN ENAMEL PROTECTIVE COATING OF AT LEAST ONE LAYER OF A CRYSTALLISED ENAMEL AND AT LEAST ONE LAYER OF A VITRIFIED COVER COAT ENAMEL, SAID LAYERS BEING APPLIED AND FUSED IN SUCCESSION IN THE ORDER STATED.
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) | 1971-01-01 | 1971-07-03 | 1972-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-01 | 1975-07-03 | 1976-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-01 | 1979-07-03 | 1980-01-02 | $7700.00 | Window Closed / Lapsed |