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US3423453A
Expired / Lapsed
US
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Process for the manufacture of lightcolored olefin sulfonation products or of the corresponding sulfonates
Assignee: Henkel AG and Co KGaA
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Filing: 1965-01-07
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Granted: 1969-01-21
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Expires: 1985-01-07
Abstract
No abstract record available.
Inventors
- 👤 Horst Baumann
- 👤 Werner Stein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:20
CPC Classifications
C; C07; C07C; C07C309/00; C07C309/01; C07C309/02; C07C309/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2061617A
Cited
US2278064A
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US3084186A
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US3200140A
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US3164608A
Cited
US3164609A
Cited
US3235549A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-21 | 1972-07-22 | 1973-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-21 | 1976-07-22 | 1977-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-21 | 1980-07-22 | 1981-01-21 | $7700.00 | Window Closed / Lapsed |