US3206444A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing halogenated and sulfohalogenated copolymers of lower olefins
Assignee: Hoechst AG
•
Filing: 1961-04-26
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Granted: 1965-09-14
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Expires: 1981-04-26
Abstract
No abstract record available.
Inventors
- 👤 Gumboldt Albert Gustav Martin
- 👤 Heitzer Erich
- 👤 Rust Karl Gustav Kurt
- 👤 Grams Erhard Wilhelm
- 👤 Orthner Ludwig
- 👤 Herzberg Horst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:46
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/34; C08F8/18; C08F8/20; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
A CROSS-LINKED SULFOCHLORINATED LOW PRESSURE ETHYLENE/PROPYLENE COPOLYMER, SAID COPOLYMER HAVING BEEN PREPARED BY THE COPOLYMERIZATION OF ETHYLENE AND PROPYLENE IN A MOLAR RATIO VARYING BETWEEN 65:35 ADN 95:5 IN CONTACT WITH A CATALYST COMPRISING AN ORGANO-ALUMINUM COMPOUND, AND A SALT OF A METAL OF SUBGROUPS IVB, VB AND VIB OF THE MENDELEEFF PERIODIC TABLE.
Claim 2
Dependent Claim
54 words
A CROSS-LINKED SULFOCHLORINATED LOW PRESSURE ETHYLENE/PROPYLENE COPOLYMER, SAID COPOLYMER HAVING BEEN PREPARED BY THE COPOLYMERIZATION OF ETHYLENE AND PROPYLENE IN A MOLAR RATIO VARYING BETWEEN 65:35 ADN 95:5 IN CONTACT WITH A CATALYST COMPRISING AN ORGANO-ALUMINUM COMPOUND, AND A SALT OF A METAL OF SUBGROUPS IVB, VB AND VIB OF THE MENDELEEFF PERIODIC TABLE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-13 | 1969-03-15 | 1969-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-13 | 1973-03-15 | 1973-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-13 | 1977-03-15 | 1977-09-14 | $7700.00 | Window Closed / Lapsed |