US2895813A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of producing solid aluminum sulphate
Assignee: Sulphates Ltd
•
Filing: 1955-09-29
•
Granted: 1959-07-21
•
Expires: 1975-09-29
Abstract
No abstract record available.
Inventors
- 👤 Brooksbank Harry Percival
- 👤 Martin Michael James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:38
CPC Classifications
B; B01; B01J; B01J2/00; B01J2/12; C; C01; C01F; C01F7/00; C01F7/68; C01F7/74; C01F7/746
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
170 words
PROCESS OF PRODUCING NODULES OF SOLID HYDRATED ALUMINUM SULPHATE FROM A LIQUID HYDRATED ALUMINUM SULPHATE HAVING A SPECIFIC GRAVITY OF APPROXIMATELY 1.6 WHICH CONSISTS ESSENTIALLY IN THE STEPS OF MAINTAINING A CHARGE OF SOLID NODULES OF SOLID HYDRATED ALUMINUM SULPHATE CONTAINING FROM 14 TO ABOUT 18% AL2O3 IN A STATE OF CONTINUOUS AGITATION, ESTABLISHING AND MAINTAINING A SUPPLY OF SAID LIQUID HYDRATED ALUMINUM SULPHATE AT A TEMPERATURE SUBSTANTIALLY ABOUT 85-87* C., CONTINOUSLY DIRECTING SAID LIQUID HYDRATED ALUMINUM SULPHATE IN SUBDIVIDED CONDITION ONTO THE AGITATED NODULES FROM A DISCHARGE POSITION SPACED THEREFROM WHILE COOLING THE DISCHARGED LIQUID HYDRATED ALUMINUM SULPHATE WHEREBY THE LATTER SOLIDIFIES IN CONTACT WITH THE AGITATED NODULES AND THE LATTER ENLARGE BY ACCRETION TO NODULES OF SOLID HYDRATED ALUMINUM SULPHATE CONTAINING FROM 14 TO ABOUT 18% AL2O3 WHILE AT THE SAME TIME FRESH NODULES OF SOLID HYDRATED ALUMINUM SULPHATE CONTAINING FROM 14 TO ABOUT 18% AL2O3 ARE FORMED, AND CONTINUOUSLY REMOVING NODULES FROM SAID AGITATED CHARGE AT SUBSTANTIALLY THE SAME RATE SAID LIQUID HYDRATED ALUMINUM SULPHATE IS SUPPLIED.
Claim 2
Dependent Claim
170 words
PROCESS OF PRODUCING NODULES OF SOLID HYDRATED ALUMINUM SULPHATE FROM A LIQUID HYDRATED ALUMINUM SULPHATE HAVING A SPECIFIC GRAVITY OF APPROXIMATELY 1.6 WHICH CONSISTS ESSENTIALLY IN THE STEPS OF MAINTAINING A CHARGE OF SOLID NODULES OF SOLID HYDRATED ALUMINUM SULPHATE CONTAINING FROM 14 TO ABOUT 18% AL2O3 IN A STATE OF CONTINUOUS AGITATION, ESTABLISHING AND MAINTAINING A SUPPLY OF SAID LIQUID HYDRATED ALUMINUM SULPHATE AT A TEMPERATURE SUBSTANTIALLY ABOUT 85-87* C., CONTINOUSLY DIRECTING SAID LIQUID HYDRATED ALUMINUM SULPHATE IN SUBDIVIDED CONDITION ONTO THE AGITATED NODULES FROM A DISCHARGE POSITION SPACED THEREFROM WHILE COOLING THE DISCHARGED LIQUID HYDRATED ALUMINUM SULPHATE WHEREBY THE LATTER SOLIDIFIES IN CONTACT WITH THE AGITATED NODULES AND THE LATTER ENLARGE BY ACCRETION TO NODULES OF SOLID HYDRATED ALUMINUM SULPHATE CONTAINING FROM 14 TO ABOUT 18% AL2O3 WHILE AT THE SAME TIME FRESH NODULES OF SOLID HYDRATED ALUMINUM SULPHATE CONTAINING FROM 14 TO ABOUT 18% AL2O3 ARE FORMED, AND CONTINUOUSLY REMOVING NODULES FROM SAID AGITATED CHARGE AT SUBSTANTIALLY THE SAME RATE SAID LIQUID HYDRATED ALUMINUM SULPHATE IS SUPPLIED.
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) | 1962-07-20 | 1963-01-19 | 1963-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-20 | 1967-01-19 | 1967-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-20 | 1971-01-19 | 1971-07-21 | $7700.00 | Window Closed / Lapsed |