Patent US3027236A successfully refreshed from Google Patents.
US3027236A
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US
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Method of handling phosphoric acid
Assignee: Wyeth Holdings LLC
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Filing: 1959-08-03
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Granted: 1962-03-27
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Expires: 1979-08-03
Abstract
No abstract record available.
Inventors
- 👤 Cosway Harry Francis
- 👤 Lapp Darwin Fiske De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:14
CPC Classifications
C; C23; C23F; C23F15/00; C01; C01B; C01B25/00; C01B25/16; C01B25/18
Claims Analysis
Total Claims: 0
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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) | 1965-03-26 | 1965-09-25 | 1966-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-26 | 1969-09-25 | 1970-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-26 | 1973-09-25 | 1974-03-27 | $7700.00 | Window Closed / Lapsed |