Patent US3044140A successfully refreshed from Google Patents.
US3044140A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making fluorspar briquettes
Assignee: Glen Gery Shale Brick Corp
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Filing: 1959-10-06
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Granted: 1962-07-17
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Expires: 1979-10-06
Abstract
No abstract record available.
Inventors
- 👤 James R Coxey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:50
CPC Classifications
C; C21; C21C; C21C7/00; C21C7/04; C21C7/076; C01; C01F; C01F11/00; C01F11/20; C01F11/22; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
8 words
THE PROCESS FOR FORMING A UNITARY, SHAPED, FLUORSPAR
Claim 2
Dependent Claim
8 words
THE PROCESS FOR FORMING A UNITARY, SHAPED, FLUORSPAR
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) | 1965-07-16 | 1966-01-15 | 1966-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-16 | 1970-01-15 | 1970-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-16 | 1974-01-15 | 1974-07-17 | $7700.00 | Window Closed / Lapsed |