Patent US4069233A successfully refreshed from Google Patents.
US3432402A
Expired / Lapsed
US
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Recovery of turpentine from black liquor
Assignee: Kraton Chemical LLC
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Filing: 1967-01-19
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Granted: 1969-03-11
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Expires: 1987-01-19
Abstract
No abstract record available.
Inventors
- 👤 Richard Herrlinger
- 👤 Claude James Kirkland
- 👤 Leo Frank Ciesielski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:05
CPC Classifications
D; D21; D21C; D21C11/00; D21C11/0007
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US942106A
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US1169325A
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US1795557A
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FR673649A
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GB406184A
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US1938693A
Cited
US2283067A
Cited
US2459570A
Cited
US2591106A
Cited
US2999044A
Cited
US3286763A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-10 | 1972-09-09 | 1973-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-10 | 1976-09-09 | 1977-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-10 | 1980-09-09 | 1981-03-11 | $7700.00 | Window Closed / Lapsed |