US2601395A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glassy molecularly dehydrated phosphates
Assignee: CALGON Inc
•
Filing: 1944-06-29
•
Granted: 1952-06-24
•
Expires: 1964-06-29
Abstract
No abstract record available.
Inventors
- 👤 George B Hatch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 04:24
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/02; C09K8/03; C09K8/032; C01; C01B; C01B25/00; C01B25/16; C01B25/26; C01B25/45; C02; C02F; C02F5/00; C02F5/08; C02F5/086
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1654404A
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US2081618A
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US2142944A
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US2235955A
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US2304850A
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US2337856A
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US2365489A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-06-24 | 1955-12-24 | 1956-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-24 | 1959-12-24 | 1960-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-24 | 1963-12-24 | 1964-06-24 | $7700.00 | Window Closed / Lapsed |