Patent US2662028A successfully refreshed from Google Patents.
US2662028A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mill addition agent for enamel slips
Assignee: Lithium Corp of America Inc
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Filing: 1950-01-05
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Granted: 1953-12-08
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Expires: 1970-01-05
Abstract
No abstract record available.
Inventors
- 👤 Walter M Fenton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:01
CPC Classifications
C; C03; C03C; C03C4/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
A MILL ADDITION AGENT, FOR THE MANUFACTURE OF SILICIOUS VITREOUS ENAMEL SLIPS, COMPRISING SODIUM CARBOXYMETHYL CELLULOSE AND AT LEAST ONE LITHIUM SALT SELECTED FROM THE GROUP CONSISTING OF LITHIUM TITANATE, LITHIUM MANGANITE, LITHIUM SILICATE, LITHIUM ZIRCONATE, LITHIUM ZIRCONIUM SILICATE, LITHIUM ALUMINATE, AND LITHIUM COBALTITE, SAID LITHIUM SALT BEING PRESENT IN PROPORTIONS APPROXIMATELY 2 TO 4 TIMES THAT OF THE SODIUM CARBOXYMETHYL CELLULOSE.
Claim 2
Dependent Claim
62 words
A MILL ADDITION AGENT, FOR THE MANUFACTURE OF SILICIOUS VITREOUS ENAMEL SLIPS, COMPRISING SODIUM CARBOXYMETHYL CELLULOSE AND AT LEAST ONE LITHIUM SALT SELECTED FROM THE GROUP CONSISTING OF LITHIUM TITANATE, LITHIUM MANGANITE, LITHIUM SILICATE, LITHIUM ZIRCONATE, LITHIUM ZIRCONIUM SILICATE, LITHIUM ALUMINATE, AND LITHIUM COBALTITE, SAID LITHIUM SALT BEING PRESENT IN PROPORTIONS APPROXIMATELY 2 TO 4 TIMES THAT OF THE SODIUM CARBOXYMETHYL CELLULOSE.
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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) | 1956-12-07 | 1957-06-08 | 1957-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-07 | 1961-06-08 | 1961-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-07 | 1965-06-08 | 1965-12-08 | $7700.00 | Window Closed / Lapsed |