Patent US3078262A successfully refreshed from Google Patents.
US3078262A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of olefins
Assignee: NL Industries Inc
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Filing: 1957-12-16
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Granted: 1963-02-19
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Expires: 1977-12-16
Abstract
No abstract record available.
Inventors
- 👤 Daniel F Herman
- 👤 Robert C Kollman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:15
CPC Classifications
C; C08; C08F; C08F4/00; C08F4/06; C08F4/12; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
A METHOD FOR POLYMERIZING AN OLEFINICALLY-UNSATURATED MONOMER SELECTED FROM THE GROUP CONSISTING OF ETHYLENE, STYRENE, AND ALKYL-SUBSTITUTED STYRENES WHICH COMPRISES THE STEPS OF POLYMERIZING SAID MONOMERS AT A TEMPERATURE BETWEEN ROOM TEMPERATURE AND 150*C. IN THE PRESENCE OF A CATALYST SYSTEM COMPRISING AN AMINE, SAID AMINE BEING SELECTED FROM THE GROUP CONSISTING OF PYRIDINE AND SECONDARY ALPHATIC, AROMATIC, AND CYCLOALIPHATIC AMINES, AND THE REACTION PRODUCT PREPARED BY ADMIXING A TRANSITION METAL SALT AND A GRIGNARD REAGENT, SAID TRANSITION METAL OF SAID TRANSITION METAL SALT BEING SELECTED FROM THE GROUP CONSISTING OF TITANIUM AND ZIRCONIUM, SAID REACTION PRODUCT CONTAINING AN ORGANIC MOIETY LINKED TO SAID TRANSITION METAL BY A DIRECT METALTO-CARBON BOND, AND WHERE SAID AMINE IS PRESENT IN AMOUNT BETWEEN 0.05 AND 2 GRAM-MOLS OF AMINE FOR EACH GRAMATOM OF SAID TRANSITION METAL.
Claim 2
Independent Claim
133 words
A METHOD FOR POLYMERIZING AN OLEFINICALLY-UNSATURATED MONOMER SELECTED FROM THE GROUP CONSISTING OF ETHYLENE, STYRENE, AND ALKYL-SUBSTITUTED STYRENES WHICH COMPRISES THE STEPS OF POLYMERIZING SAID MONOMERS AT A TEMPERATURE BETWEEN ROOM TEMPERATURE AND 150*C. IN THE PRESENCE OF A CATALYST SYSTEM COMPRISING AN AMINE, SAID AMINE BEING SELECTED FROM THE GROUP CONSISTING OF PYRIDINE AND SECONDARY ALPHATIC, AROMATIC, AND CYCLOALIPHATIC AMINES, AND THE REACTION PRODUCT PREPARED BY ADMIXING A TRANSITION METAL SALT AND A GRIGNARD REAGENT, SAID TRANSITION METAL OF SAID TRANSITION METAL SALT BEING SELECTED FROM THE GROUP CONSISTING OF TITANIUM AND ZIRCONIUM, SAID REACTION PRODUCT CONTAINING AN ORGANIC MOIETY LINKED TO SAID TRANSITION METAL BY A DIRECT METALTO-CARBON BOND, AND WHERE SAID AMINE IS PRESENT IN AMOUNT BETWEEN 0.05 AND 2 GRAM-MOLS OF AMINE FOR EACH GRAMATOM OF SAID TRANSITION METAL.
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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) | 1966-02-18 | 1966-08-20 | 1967-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-18 | 1970-08-20 | 1971-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-18 | 1974-08-20 | 1975-02-19 | $7700.00 | Window Closed / Lapsed |