Patent US2518286A successfully refreshed from Google Patents.
US2518286A
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Process of and apparatus for the manufacture of fertilizers
Assignee: Compagnie de Saint Gobain SA
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Filing: 1945-09-19
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Granted: 1950-08-08
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Expires: 1965-09-19
Abstract
No abstract record available.
Inventors
- 👤 Constant Antime
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:42
CPC Classifications
C; C05; C05B; C05B1/00; C05B1/10
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
92 words
APPARATUS FOR THE MANUFACTURE OF A FERTILIZER INCLUDING AN ENCLOSURE COMPRISING A TROUGH, A PERFORATED TRANSVERSE PARTITION THEREIN, MEANS TO ADMIT A LIQUID TO THE TROUGH AT ONE SIDE OF THE PARTITION, MEANS TO WITHDRAW CONTENTS FROM THE TROUGH AT THE OTHER SIDE OF THE PARTITION, MEANS COMPRISING A HELICAL CONVEYOR TO MOVE THE CONTENTS ALONG THE TROUGH, MEANS TO DELIVER FINELY DIVIDED MATERIAL TO THE TROUGH COMPRISING A SCRAPER CONVERYOR HAVING A FLOOR CUT AWAY TO PROVIDE AN OPENING OF PROGRESSIVELY DIFFERING SIZE THAT PERMITS THE FALL OF MATERIAL IN ACCORDANCE
Claim 2
Dependent Claim
92 words
APPARATUS FOR THE MANUFACTURE OF A FERTILIZER INCLUDING AN ENCLOSURE COMPRISING A TROUGH, A PERFORATED TRANSVERSE PARTITION THEREIN, MEANS TO ADMIT A LIQUID TO THE TROUGH AT ONE SIDE OF THE PARTITION, MEANS TO WITHDRAW CONTENTS FROM THE TROUGH AT THE OTHER SIDE OF THE PARTITION, MEANS COMPRISING A HELICAL CONVEYOR TO MOVE THE CONTENTS ALONG THE TROUGH, MEANS TO DELIVER FINELY DIVIDED MATERIAL TO THE TROUGH COMPRISING A SCRAPER CONVERYOR HAVING A FLOOR CUT AWAY TO PROVIDE AN OPENING OF PROGRESSIVELY DIFFERING SIZE THAT PERMITS THE FALL OF MATERIAL IN ACCORDANCE
Claim 3
Dependent Claim
61 words
IN A CHEMICAL PROCESS THAT INCLUDES THE STEP OF IMMERSING A SOLID REACTANT IN A BATH OF A LIQUID REACTANT AND THAT INCLUDES THE EVOLUTION OF A GAS HAVING INGREDIENTS OF VALUE IN THE REACTION PRODUCT, THE STEP OF PASSING SAID, EVOLVED GAS THROUGH A RAIN OF THE POWERED SOLID WHEREBY TO RETURN SOME OF SAID GAS TO THE REACTION MASS.
Claim 4
Dependent Claim
61 words
IN A CHEMICAL PROCESS THAT INCLUDES THE STEP OF IMMERSING A SOLID REACTANT IN A BATH OF A LIQUID REACTANT AND THAT INCLUDES THE EVOLUTION OF A GAS HAVING INGREDIENTS OF VALUE IN THE REACTION PRODUCT, THE STEP OF PASSING SAID, EVOLVED GAS THROUGH A RAIN OF THE POWERED SOLID WHEREBY TO RETURN SOME OF SAID GAS TO THE REACTION MASS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-07 | 1954-02-06 | 1954-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-07 | 1958-02-06 | 1958-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-07 | 1962-02-06 | 1962-08-08 | $7700.00 | Window Closed / Lapsed |