US2909490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of duplex composition of sodium tripolyphosphate and sodium silicate solution
Assignee: Olin Corp
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Filing: 1954-07-28
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Granted: 1959-10-20
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Expires: 1974-07-28
Abstract
No abstract record available.
Inventors
- 👤 Metziger Max
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:41
CPC Classifications
C; C11; C11D; C11D7/00; C11D7/02; C11D7/04; C11D7/10; C11D7/14; C11D7/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
THE METHOD WHICH FCOMPRISES AGITATING A MASS OF PARTICLES OF ANHYDROUS SODIUM TRIPOLYPHOSPHATE AT A TEMPEATURE BELOW THE CRITICAL TEMPERATURE FRO INITIATION OF DECOMPOSITION OF SODIUM TRIPOLYPHOSPHATE HEXAHYDRATE IN THE PRESENCE OF WATER, SLOWLY ADDING TO SAID AGITATED MASS AND THEREBY MIXING THEREWITH AN AQUEOUS SOLUTION OF SODIUM SILICATE HAVING A RATIO OF NA2O TO SIO2 IN THE RANGE FROM THE RATIO 1 TO 2.40 TO THE RATIO OF 1 TO 3.22, THE AMOUNT OF SAID SOLUTION BEING LESS THAN A MAXIMUM AMOUNT, AND STOPPING THE SAID ADDITION AND CONTINUING THE MIXING UNTIL THE MASS IS A HOMOGENEOUS MASS OF DRY PARTICLES, SAID MAXIMUM AMOUNT BEING THE LEAST AMOUNT FOR THE PARTICULAR FORMULATION HEREOF WHICH PRODUCES A STICKY PRODUCT AT THE END OF ONE HOUR OF SAID CONTINUED MIXING.
Claim 2
Independent Claim
129 words
THE METHOD WHICH FCOMPRISES AGITATING A MASS OF PARTICLES OF ANHYDROUS SODIUM TRIPOLYPHOSPHATE AT A TEMPEATURE BELOW THE CRITICAL TEMPERATURE FRO INITIATION OF DECOMPOSITION OF SODIUM TRIPOLYPHOSPHATE HEXAHYDRATE IN THE PRESENCE OF WATER, SLOWLY ADDING TO SAID AGITATED MASS AND THEREBY MIXING THEREWITH AN AQUEOUS SOLUTION OF SODIUM SILICATE HAVING A RATIO OF NA2O TO SIO2 IN THE RANGE FROM THE RATIO 1 TO 2.40 TO THE RATIO OF 1 TO 3.22, THE AMOUNT OF SAID SOLUTION BEING LESS THAN A MAXIMUM AMOUNT, AND STOPPING THE SAID ADDITION AND CONTINUING THE MIXING UNTIL THE MASS IS A HOMOGENEOUS MASS OF DRY PARTICLES, SAID MAXIMUM AMOUNT BEING THE LEAST AMOUNT FOR THE PARTICULAR FORMULATION HEREOF WHICH PRODUCES A STICKY PRODUCT AT THE END OF ONE HOUR OF SAID CONTINUED MIXING.
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) | 1962-10-19 | 1963-04-20 | 1963-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-19 | 1967-04-20 | 1967-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-19 | 1971-04-20 | 1971-10-20 | $7700.00 | Window Closed / Lapsed |