US3445556A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing shaped articles of cellulose graft copolymers
Assignee: FMC Corp
•
Filing: 1966-05-11
•
Granted: 1969-05-20
•
Expires: 1986-05-11
Abstract
No abstract record available.
Inventors
- 👤 Joseph M Kuzmak
- 👤 Joseph W Schappel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:23
CPC Classifications
D; D06; D06M; D06M14/00; D06M14/02; D06M14/04; D01; D01F; D01F11/00; D01F11/02; D01F2/00; D01F2/06; D01F2/08; D01F2/10
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2336985A
Cited
US2686103A
Cited
US2908659A
Cited
US2914376A
Cited
US3101276A
Cited
US3083118A
Cited
US3046078A
Cited
US3157527A
Cited
US3128147A
Cited
US3183056A
Cited
US3310428A
Cited
US3373237A
Cited
US3359224A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-19 | 1972-11-18 | 1973-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-19 | 1976-11-18 | 1977-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-19 | 1980-11-18 | 1981-05-20 | $7700.00 | Window Closed / Lapsed |