US3317293A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rare earth chlorides in a glass polishing composition
Assignee: Libbey Owens Ford Glass Co
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Filing: 1964-04-20
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Granted: 1967-05-02
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Expires: 1984-04-20
Abstract
No abstract record available.
Inventors
- 👤 Harold L Rueter
- 👤 Lazarus D Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:31
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/14; C09K3/1454; C09K3/1463
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
IN A METHOD OF FINISHING A GLASS SURFACE, THE STEP OF RUBBING A SLURRY OF WATER, CERIUM OXIDE AND A MIXTURE OF RARE EARTH CHLORIDES CONTAINING APPROXIMATELY 45% CEROUS CHLORIDE, IN THE PREPORTIONS OF 100 PARTS BY WEIGHT OF WATER, FROM 0.5 TO 20 PARTS BY WEIGHT OF CERIUM OXIDE AND FROM 0.5 TO 5 PARTS BY WEIGHT OF THE MIXTURE OF RARE EARTH CHLORIDES, OVER SAID SURFACE WITH A SOFT TOOL.
Claim 2
Dependent Claim
72 words
IN A METHOD OF FINISHING A GLASS SURFACE, THE STEP OF RUBBING A SLURRY OF WATER, CERIUM OXIDE AND A MIXTURE OF RARE EARTH CHLORIDES CONTAINING APPROXIMATELY 45% CEROUS CHLORIDE, IN THE PREPORTIONS OF 100 PARTS BY WEIGHT OF WATER, FROM 0.5 TO 20 PARTS BY WEIGHT OF CERIUM OXIDE AND FROM 0.5 TO 5 PARTS BY WEIGHT OF THE MIXTURE OF RARE EARTH CHLORIDES, OVER SAID SURFACE WITH A SOFT TOOL.
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) | 1970-05-01 | 1970-10-31 | 1971-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-01 | 1974-10-31 | 1975-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-01 | 1978-10-31 | 1979-05-02 | $7700.00 | Window Closed / Lapsed |