US3411872A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing nonhygroscopic sodium aluminum phosphate
Assignee: Stauffer Chemical Co
•
Filing: 1967-07-24
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Granted: 1968-11-19
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Expires: 1987-07-24
Abstract
No abstract record available.
Inventors
- 👤 Leo B Post
- 👤 Julian E Blanch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:10
CPC Classifications
C; C01; C01B; C01B25/00; C01B25/16; C01B25/26; C01B25/45
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3205073A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-19 | 1972-05-20 | 1972-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-19 | 1976-05-20 | 1976-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-19 | 1980-05-20 | 1980-11-19 | $7700.00 | Window Closed / Lapsed |