US3486994A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing chlorine by electrolysis of aqueous hydrochloric acid
Assignee: Hoechst AG
•
Filing: 1966-12-20
•
Granted: 1969-12-30
•
Expires: 1986-12-20
Abstract
No abstract record available.
Inventors
- 👤 Ernst Donges
- 👤 Hans Georg Janson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:48
CPC Classifications
C; C25; C25B; C25B1/00; C25B1/01; C25B1/24; C25B1/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1246099A
Cited
US2468766A
Cited
US2666024A
Cited
GB834640A
Cited
US3119757A
Cited
US3291708A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-29 | 1973-06-30 | 1973-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-29 | 1977-06-30 | 1977-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-29 | 1981-06-30 | 1981-12-30 | $7700.00 | Window Closed / Lapsed |