US3114704A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ore flotation collector and ore flotation process
Assignee: Armour and Co
•
Filing: 1961-04-20
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Granted: 1963-12-17
•
Expires: 1981-04-20
Abstract
No abstract record available.
Inventors
- 👤 Robert S Kauffman
- 👤 Robert E Baarson
- 👤 Harold B Treweek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:16
CPC Classifications
B; B03; B03D; B03D1/00; B03D1/001; B03D1/004; B03D1/01; B03D2201/00; B03D2201/02; B03D2203/00; B03D2203/02; B03D2203/04; B03D2203/06; Y; Y10; Y10S; Y10S209/00; Y10S209/902
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
AN ORE FLOTATION COLLECTOR, COMPRISING FROM 5 TO 60% BY WEIGHT OF HYDROGENATED NITRILE PITCH IN ADMIXTURE WITH FROM 40 TO 95% OF A PRIMARY FATTY MONOAMINE, SAID PITCH HAVING BEEN PREPARED BY HYDROGENATING THE RELATIVELY NONVOLATILE RESIDUES OBTAINED IN THE MANUFACTURE OF NITRILES WHEREIN C12 TO C22 FATTY ACIDS ARE REACTED WITH AMMONIA AND THE NITRILE PRODUCT IS RECOVERED BY DISTILLATION, SID HYDROGENATION HAVING CONVERTED THE MAJOR PROPORTION OF THE NITRILES IN SAID PITCH TO AMINES AND SAID HYDROGENATED NITRILE PITCH BEING COMPOSED PREDOMINANTLY OF COMPOUNDS CONTAINING IN EXCESS OF 22 CARBON ATOMS, AND SAID PRIMARY AMINE BEING COMPOSED ESSENTIALLY OF AMINES CONTAINING FROM 12 TO 22 CARBON ATOMS.
Claim 2
Dependent Claim
110 words
AN ORE FLOTATION COLLECTOR, COMPRISING FROM 5 TO 60% BY WEIGHT OF HYDROGENATED NITRILE PITCH IN ADMIXTURE WITH FROM 40 TO 95% OF A PRIMARY FATTY MONOAMINE, SAID PITCH HAVING BEEN PREPARED BY HYDROGENATING THE RELATIVELY NONVOLATILE RESIDUES OBTAINED IN THE MANUFACTURE OF NITRILES WHEREIN C12 TO C22 FATTY ACIDS ARE REACTED WITH AMMONIA AND THE NITRILE PRODUCT IS RECOVERED BY DISTILLATION, SID HYDROGENATION HAVING CONVERTED THE MAJOR PROPORTION OF THE NITRILES IN SAID PITCH TO AMINES AND SAID HYDROGENATED NITRILE PITCH BEING COMPOSED PREDOMINANTLY OF COMPOUNDS CONTAINING IN EXCESS OF 22 CARBON ATOMS, AND SAID PRIMARY AMINE BEING COMPOSED ESSENTIALLY OF AMINES CONTAINING FROM 12 TO 22 CARBON ATOMS.
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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) | 1966-12-16 | 1967-06-17 | 1967-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-16 | 1971-06-17 | 1971-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-16 | 1975-06-17 | 1975-12-17 | $7700.00 | Window Closed / Lapsed |