Patent US2771361A successfully refreshed from Google Patents.
US2771361A
Expired / Lapsed
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Defibration processes
Assignee: Process Evaluation and Development Corp
•
Filing: 1951-12-07
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Granted: 1956-11-20
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Expires: 1971-12-07
Abstract
No abstract record available.
Inventors
- 👤 Birdseye Clarence
- 👤 Harold D Stuck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:02
CPC Classifications
D; D21; D21B; D21B1/00; D21B1/04; D21B1/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
43 words
IN A CONTINUOUS DEFIBRATING PROCESS, THE STEPS OF FREEING A MASS OF DIGESTED VEGETABLE FIBRE BY COMPRESSION FROM EXCESS DIGESTANT SOLUTION INTRODUCING THE MASS AS PRESS CAKE INTO A CONFINED SPACE CONTAINING HOT WATER, BREAKING UP THE PROCESS CAKE BY STIRRING AND MEANWHILE
Claim 2
Dependent Claim
43 words
IN A CONTINUOUS DEFIBRATING PROCESS, THE STEPS OF FREEING A MASS OF DIGESTED VEGETABLE FIBRE BY COMPRESSION FROM EXCESS DIGESTANT SOLUTION INTRODUCING THE MASS AS PRESS CAKE INTO A CONFINED SPACE CONTAINING HOT WATER, BREAKING UP THE PROCESS CAKE BY STIRRING AND MEANWHILE
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-20 | 1960-05-21 | 1960-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-20 | 1964-05-21 | 1964-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-20 | 1968-05-21 | 1968-11-20 | $7700.00 | Window Closed / Lapsed |