Patent US2918383A successfully refreshed from Google Patents.
US2918383A
Expired / Lapsed
US
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Ceramic frit composition
Assignee: NL Industries Inc
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Filing: 1957-03-21
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Granted: 1959-12-22
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Expires: 1977-03-21
Abstract
No abstract record available.
Inventors
- 👤 James H Strimple
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:36
CPC Classifications
C; C03; C03C; C03C4/00; C03C4/02; C03C14/00; C03C14/006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
16 words
A FRIT COMPOSITION CAPABLE OF FORMING A REPRODUCIBLE PINK PORCELAIN ENAMEL, SAID COMPOSITION CONSISTING ESSENTIALLY OF:
Claim 2
Dependent Claim
16 words
A FRIT COMPOSITION CAPABLE OF FORMING A REPRODUCIBLE PINK PORCELAIN ENAMEL, SAID COMPOSITION CONSISTING ESSENTIALLY OF:
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) | 1962-12-21 | 1963-06-22 | 1963-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-21 | 1967-06-22 | 1967-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-21 | 1971-06-22 | 1971-12-22 | $7700.00 | Window Closed / Lapsed |