Patent US3540865A successfully refreshed from Google Patents.
US3540865A
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System for absorbing and burning combustible liquids
Assignee: Ekoperl GmbH Firma
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Filing: 1968-02-20
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Granted: 1970-11-17
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Expires: 1988-02-20
Abstract
No abstract record available.
Inventors
- 👤 Hans Pape
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:54
CPC Classifications
B; B01; B01J; B01J20/00; B01J20/28; B01J20/28014; B01J20/28042; B01J20/02; B01J20/10; B01J20/103; B01J20/106; B01J20/28002; B01J20/28004; B01J20/28011; B01J20/2803; C; C10; C10L; C10L11/00; C10L11/02; C10L7/00; C10L7/02; F; F23; F23G; F23G7/00; F23G7/05
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2249681A
Cited
US2728733A
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US2967154A
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US3089760A
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US3260581A
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US3351444A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-16 | 1974-05-18 | 1974-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-16 | 1978-05-18 | 1978-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-16 | 1982-05-18 | 1982-11-17 | $7700.00 | Window Closed / Lapsed |