Patent US796067A successfully refreshed from Google Patents.
Patent US3565675A successfully refreshed from Google Patents.
US3565675A
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US
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Coatings from lithium silicate
Assignee: PQ Corp
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Filing: 1966-10-05
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Granted: 1971-02-23
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Expires: 1986-10-05
Abstract
Abstract SILICEOUS FILMS ARE DEVELOPED ON HYDROXYLATED SURFACES BY HEATING THEM IN CONTACT WITH A SOLUTION OF LITHIUM SILICATE.
Inventors
- 👤 Robert H Sams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:25
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; C03; C03C; C03C17/00; C03C17/22; C04B41/45; C04B41/50; C04B41/5076; C04B41/5089; C04B41/80; C04B41/81; C04B41/85; C23; C23C; C23C22/00; C23C22/05; C23C22/60; C03C2217/00; C03C2217/20; C03C2217/28; C03C2218/00; C03C2218/10; C03C2218/11
Claims Analysis
Total Claims: 0
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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) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |