US3578647A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chemical crosslinking scorch preventing additives and process therefor
Assignee: WR Grace and Co
•
Filing: 1968-05-06
•
Granted: 1971-05-11
•
Expires: 1988-05-06
Abstract
Abstract THIS INVENTION RELATES TO THE PREVENTION OF SCORCH IN A PROCESS FOR CHEMICALLY CROSSLINKING ETHYLENE-CONTAINING HOMOPOLYMERS AND COPOLYMERS BY FREE RADICAL GENERATING CROSSLINKING AGENTS BY THE ADDITION OF CHAIN TRANSFER AGENTS TO THE SYSTEM.
Inventors
- 👤 Razmic S Gregorian
- 👤 Charles C Kirk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:33
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/0008; C08K5/04; C08K5/14
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1974-05-10 | 1974-11-09 | 1975-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-10 | 1978-11-09 | 1979-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-10 | 1982-11-09 | 1983-05-11 | $7700.00 | Window Closed / Lapsed |