US3338671A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sodium tripolyphosphate granular product
Assignee: FMC Corp
•
Filing: 1963-06-20
•
Granted: 1967-08-29
•
Expires: 1983-06-20
Abstract
No abstract record available.
Inventors
- 👤 Henry L Marschall
- 👤 John W Coykendall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:19
CPC Classifications
C; C01; C01B; C01B25/00; C01B25/16; C01B25/26; C01B25/38; C01B25/40; C01B25/41; C01B25/418
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
THE PROCESS OF PRODUCING GRANULAR SODIUM TRIPOLYPHOSPHATE FROM AN AQUEOUS SODIUM ORTHOPHOSPHATE MIXTURE COMPRISING THE STEPS OF PASSING SAID MIXTURE THROUGH A HEATED ZONE TO OBTAIN AN INITIAL SODIUM TRIPOLYPHOSPHATE IN PARTICULATE FORM HAVING A BULK DENSITY OF ABOUT 0.4 TO ABOUT 1.2 G/CC., COMPACTING PARTICLES OF SAID INITIAL SODIUM TRIPOLYPHOSPHATE AT TEMPERATURES BELOW ABOUT 350* C. TO FORM NON-FRIABLE COMPACTED PARTICLES, GRINDING SAID COMPACTED PARTICLES AND REMOVING A GRANULAR SODIUM TRI-
Claim 2
Dependent Claim
72 words
THE PROCESS OF PRODUCING GRANULAR SODIUM TRIPOLYPHOSPHATE FROM AN AQUEOUS SODIUM ORTHOPHOSPHATE MIXTURE COMPRISING THE STEPS OF PASSING SAID MIXTURE THROUGH A HEATED ZONE TO OBTAIN AN INITIAL SODIUM TRIPOLYPHOSPHATE IN PARTICULATE FORM HAVING A BULK DENSITY OF ABOUT 0.4 TO ABOUT 1.2 G/CC., COMPACTING PARTICLES OF SAID INITIAL SODIUM TRIPOLYPHOSPHATE AT TEMPERATURES BELOW ABOUT 350* C. TO FORM NON-FRIABLE COMPACTED PARTICLES, GRINDING SAID COMPACTED PARTICLES AND REMOVING A GRANULAR SODIUM TRI-
References Cited (Backward Citations)
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Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-08-28 | 1971-02-27 | 1971-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-28 | 1975-02-27 | 1975-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-28 | 1979-02-27 | 1979-08-29 | $7700.00 | Window Closed / Lapsed |