US3257352A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vulcanization of polyethylene with peroxides and compounds containing conjugated diene and carbonyl groups
Assignee: Stamicarbon BV
•
Filing: 1961-08-11
•
Granted: 1966-06-21
•
Expires: 1981-08-11
Abstract
No abstract record available.
Inventors
- 👤 Johannes H Ottenheym
- 👤 Johan W F Van T Wout
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:20
CPC Classifications
C; C08; C08F; C08F291/00; C08F255/00; C08F255/02; C08F255/026; C08K; C08K5/00; C08K5/0008; C08K5/0025
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
A PROCESS OF VULCANIZING ETHYLENE POLYMERS CONSISTING OF FORMING A MIXTURE OF A PLOYMER SELECTED FROM THE GROUP CONSISTING OF HOMO-AND INTERPOLYMERS OF ETHYLENE, A SOURCE OF FREE RADICALS WITHIN THE TEMPERATURE RANGE OF 100-250*C., A FILLER, AND 0.5-20% BY WEIGHT OF THE POLYMER OF A CONJUGATED POLYUNSATURATED COMPOUND HAVING THE GENERAL FORMULA
Claim 2
Dependent Claim
53 words
A PROCESS OF VULCANIZING ETHYLENE POLYMERS CONSISTING OF FORMING A MIXTURE OF A PLOYMER SELECTED FROM THE GROUP CONSISTING OF HOMO-AND INTERPOLYMERS OF ETHYLENE, A SOURCE OF FREE RADICALS WITHIN THE TEMPERATURE RANGE OF 100-250*C., A FILLER, AND 0.5-20% BY WEIGHT OF THE POLYMER OF A CONJUGATED POLYUNSATURATED COMPOUND HAVING THE GENERAL FORMULA
References Cited (Backward Citations)
US2888424A
Cited
FR1200144A
Cited
US3036041A
Cited
FR1225704A
Cited
GB853640A
Cited
US3111500A
Cited
US2916481A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-20 | 1969-12-20 | 1970-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-20 | 1973-12-20 | 1974-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-20 | 1977-12-20 | 1978-06-21 | $7700.00 | Window Closed / Lapsed |