Patent US3536783A successfully refreshed from Google Patents.
US3536783A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of modified resins
Assignee: BP Chemicals Ltd
•
Filing: 1967-09-28
•
Granted: 1970-10-27
•
Expires: 1987-09-28
Abstract
No abstract record available.
Inventors
- 👤 Kerry David Jeffreys
- 👤 Howard Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:31
CPC Classifications
C; C08; C08G; C08G8/00; C08G8/04; C08G8/08; C08G8/10; C08G8/28; C08G8/38; C08L; C08L13/00; C08L61/00; C08L9/00; C08L9/02; C08L61/04; C08L61/06
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1973-10-26 | 1974-04-27 | 1974-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-26 | 1978-04-27 | 1978-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-26 | 1982-04-27 | 1982-10-27 | $7700.00 | Window Closed / Lapsed |