US3187008A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing sulphated inner sulphonium salts
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1962-07-02
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Granted: 1965-06-01
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Expires: 1982-07-02
Abstract
No abstract record available.
Inventors
- 👤 Baird William
- 👤 Batty John Woolley
- 👤 Parkinson Alexander
- 👤 Williams Kenneth Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:29
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/244; D06M13/248; D06M13/272; D06M13/278; C; C07; C07C; C07C381/00; C07C381/12; C07D; C07D215/00; C07D215/02; C07D215/16; C07D215/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
28 words
PROCESS FOR THE PREPARATION OF SULPHATED SULPHONIUM INNER SALTS WHICH COMPRISES REACTING IN A FLUID, EASILY STIRRABLE MIXTURE, A SULPHATING AGENT AND A SULPHONIUM SALT OF THE FORMULA
Claim 2
Dependent Claim
28 words
PROCESS FOR THE PREPARATION OF SULPHATED SULPHONIUM INNER SALTS WHICH COMPRISES REACTING IN A FLUID, EASILY STIRRABLE MIXTURE, A SULPHATING AGENT AND A SULPHONIUM SALT OF THE FORMULA
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) | 1968-05-31 | 1968-11-30 | 1969-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-31 | 1972-11-30 | 1973-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-31 | 1976-11-30 | 1977-06-01 | $7700.00 | Window Closed / Lapsed |