Patent US3506536A successfully refreshed from Google Patents.
US3506536A
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US
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Method of treating suspensions of fibres to form aggregates
Assignee: BREV GRANOFIBRE SOC D EXPLOIT
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Filing: 1966-06-13
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Granted: 1970-04-14
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Expires: 1986-06-13
Abstract
No abstract record available.
Inventors
- 👤 Guy Jacquelin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:28
CPC Classifications
D; D21; D21B; D21B1/00; D21B1/04; D21B1/12; B; B01; B01J; B01J2/00; B01J2/10; B29; B29B; B29B7/00; B29B7/80; B29B7/88; B29B7/90; B29B7/905; D21D; D21D5/00; D21D5/005; D21F; D21F1/00; D21F1/66
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-04-13 | 1973-10-13 | 1974-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-04-13 | 1977-10-13 | 1978-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-04-13 | 1981-10-13 | 1982-04-14 | $7700.00 | Window Closed / Lapsed |