US3498971A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of sodium carboxymethylcellulose
Assignee: Honeywell International Inc
•
Filing: 1967-02-13
•
Granted: 1970-03-03
•
Expires: 1987-02-13
Abstract
No abstract record available.
Inventors
- 👤 Aurel Blaga
- 👤 Colin R Mcarthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 07:12
CPC Classifications
C; C08; C08B; C08B1/00; C08B1/08; C08B11/00; C08B11/02; C08B11/04; C08B11/10; C08B11/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2523377A
Cited
US2512338A
Cited
US2858304A
Cited
US2991281A
Cited
US2841579A
Cited
US2912431A
Cited
US3296248A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-02 | 1973-09-01 | 1974-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-02 | 1977-09-01 | 1978-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-02 | 1981-09-01 | 1982-03-03 | $7700.00 | Window Closed / Lapsed |