US3382035A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for production of phosphoric acid
Assignee: S & P INVESTMENTS CORP A CORP OF
•
Filing: 1966-07-01
•
Granted: 1968-05-07
•
Expires: 1986-07-01
Abstract
No abstract record available.
Inventors
- 👤 Jack D Slater
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:54
CPC Classifications
C; C01; C01B; C01B25/00; C01B25/16; C01B25/18; C01B25/185
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3026192A
Cited
US3205062A
Cited
US3342580A
Cited
FR1347183A
Cited
US3245777A
Cited
FR1367595A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-07 | 1971-11-06 | 1972-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-07 | 1975-11-06 | 1976-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-07 | 1979-11-06 | 1980-05-07 | $7700.00 | Window Closed / Lapsed |