US3796773A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Graft polymers
Assignee: Lubrizol Corp
•
Filing: 1971-03-19
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Granted: 1974-03-12
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Expires: 1991-03-19
Abstract
Abstract MACROMOLECULAR COMPOSITIONS WHICH ARE SYNTHETIC POLYMERS ONTO WHICH HAVE BEEN GRAFTED MOIETIES DERIVED FROM CERTAIN N-SUBSTITUTED ACRYLAMIDES SUCH AS DIACETONE ACRYLAMIDE.
Inventors
- 👤 L Coleman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:57
CPC Classifications
C; C08; C08F; C08F291/00; C10; C10M; C10M2217/00; C10M2217/02; C10M2217/024; C10M2217/04; C10M2217/06; C10M2219/00; C10M2219/04; C10M2219/08; C10M2219/082; C10M2221/00; C10M2221/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-11 | 1977-09-10 | 1978-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-11 | 1981-09-10 | 1982-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-11 | 1985-09-10 | 1986-03-12 | $7700.00 | Window Closed / Lapsed |