Patent US3042488A successfully refreshed from Google Patents.
US3042488A
Expired / Lapsed
US
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Preparation of permonosulphates
Assignee: Evonik LCL Ltd
•
Filing: 1960-01-12
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Granted: 1962-07-03
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Expires: 1980-01-12
Abstract
No abstract record available.
Inventors
- 👤 Hildon Anthony Macdonald
- 👤 Marshall John Geoffrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:12
CPC Classifications
C; C01; C01B; C01B15/00; C01B15/055; C01B15/06; C01B15/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
A PROCESS FOR PREPARING PERMONOSULPHATES AND BISULPHATES COMPOUND SELELCTED FROM THE GROUP CONSISTING OF WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF PYROSULPHATES OF SODIUM, POTASSIUM, LITHIUM, CASEIUM, AMMONIUM, CALCIUM, STRONTIUM, BARIUM, AMGNESIUM AND ZINC AT A TEMPERATURE RANGE BETWEEN ABOUT ROOM TEMPERATURE AND 50*C.
Claim 2
Dependent Claim
46 words
A PROCESS FOR PREPARING PERMONOSULPHATES AND BISULPHATES COMPOUND SELELCTED FROM THE GROUP CONSISTING OF WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF PYROSULPHATES OF SODIUM, POTASSIUM, LITHIUM, CASEIUM, AMMONIUM, CALCIUM, STRONTIUM, BARIUM, AMGNESIUM AND ZINC AT A TEMPERATURE RANGE BETWEEN ABOUT ROOM TEMPERATURE AND 50*C.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-02 | 1966-01-01 | 1966-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-02 | 1970-01-01 | 1970-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-02 | 1974-01-01 | 1974-07-03 | $7700.00 | Window Closed / Lapsed |