Patent US3636089A successfully refreshed from Google Patents.
US3636089A
Expired / Lapsed
US
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Production of aromatic dithiocarboxylic acids
Assignee: BASF SE
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Filing: 1968-06-03
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Granted: 1972-01-18
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Expires: 1988-06-03
Abstract
Abstract THE PRODUCTION OF AROMATIC DITHIOCARBOXYLIC ACIDS BY REACTION OF AROMATIC MONOHALOMETHYL COMPOUNDS WITH ELEMENTARY SULFUR AND ALKALI METAL OR ALKALINE EARTH METAL ALCOHOLATES. THE NEW PRODUCTS OF THE PROCESS ARE VALUABLE STARTING MATERIALS FOR THE PRODUCTION OF DYES AND PESTICIDES.
Inventors
- 👤 Friedrich Becke
- 👤 Helmuth Hagen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:58
CPC Classifications
C; C07; C07C; C07C327/00; C07C2603/00; C07C2603/02; C07C2603/04; C07C2603/22; C07C2603/24
Claims Analysis
Total Claims: 0
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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) | 1975-01-17 | 1975-07-19 | 1976-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-17 | 1979-07-19 | 1980-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-17 | 1983-07-19 | 1984-01-18 | $7700.00 | Window Closed / Lapsed |