US3306949A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkali metal polymerization of diolefins
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1964-10-12
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Granted: 1967-02-28
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Expires: 1984-10-12
Abstract
No abstract record available.
Inventors
- 👤 Mertzweiller Joseph Kern
- 👤 Guttner George
- 👤 Tenney Horace Marion
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:33
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/02; C07C2/04; C07C2/38; C07C2/40; C07C2/403; C07C2/406; C07C2523/00; C07C2523/02; C07C2523/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
IN A PROCESS FOR POLYMERIZING DIOLEFINS OF 4 TO 8 CARBON ATOMS IN WHICH THE DIOLEFIN IS CONTACTED WITH A CATALYST CHOSEN FROM THE GROUP CONSISTING OF ALKALI-METAL AND ALKALI-METAL-HYDROCARBON COMPLEXES, DEACTIVATING THE CATALYST AND REC OVERING THE POLYMER, THE IMPROVEMEN THE DEACTIVATING STEPS AT TEMPERATURES BETWEEN -110* WHICH COMPRISES CARRYING OUT THE POLYMERIZATION AND AND 0*F.
Claim 2
Dependent Claim
57 words
IN A PROCESS FOR POLYMERIZING DIOLEFINS OF 4 TO 8 CARBON ATOMS IN WHICH THE DIOLEFIN IS CONTACTED WITH A CATALYST CHOSEN FROM THE GROUP CONSISTING OF ALKALI-METAL AND ALKALI-METAL-HYDROCARBON COMPLEXES, DEACTIVATING THE CATALYST AND REC OVERING THE POLYMER, THE IMPROVEMEN THE DEACTIVATING STEPS AT TEMPERATURES BETWEEN -110* WHICH COMPRISES CARRYING OUT THE POLYMERIZATION AND AND 0*F.
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) | 1970-02-27 | 1970-08-29 | 1971-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-27 | 1974-08-29 | 1975-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-27 | 1978-08-29 | 1979-02-28 | $7700.00 | Window Closed / Lapsed |