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Patent US3347689A successfully refreshed from Google Patents.
US3347689A
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Method of reducing the viscosity of a solution of cellulose derivative
Assignee: Teijin Ltd
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Filing: 1965-08-02
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Granted: 1967-10-17
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Expires: 1985-08-02
Abstract
No abstract record available.
Inventors
- 👤 Futami Atsushi
- 👤 Hayashi Kazushige
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:53
CPC Classifications
C; C08; C08B; C08B11/00; C08B11/20; C08B3/00; C08B3/22; C08B3/24; C09; C09J; C09J129/00; C09J129/02; C09J129/04; C08L; C08L2666/00; C08L2666/28; C08L2666/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2966422A
Cited
US2872231A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-16 | 1971-04-17 | 1971-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-16 | 1975-04-17 | 1975-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-16 | 1979-04-17 | 1979-10-17 | $7700.00 | Window Closed / Lapsed |