US3117112A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization process using cocatalyst of aluminum alkyl compound and oxygen
Assignee: WR Grace and Co
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Filing: 1961-04-07
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Granted: 1964-01-07
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Expires: 1981-04-07
Abstract
No abstract record available.
Inventors
- 👤 Frank A Mirabile
- 👤 Frank X Werber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:50
CPC Classifications
C; C08; C08F; C08F4/00; C08F4/06; C08F4/12; C08F18/00; C08F18/02; C08F18/04; C08F18/08; C08F2/00; C08F2/04; C08F2/06; C08F20/00; C08F20/02; C08F20/10; C08F20/12; C08F20/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
THE PROCESS OF HOMOPOLYMERIZING A VINYLIDENE MONOMER CONTAINING A CH2=C< GROUP WHICH COMPRISES SUBJECTING SAID MONOMER AT A TEMPERATURE IN THE RANGE OF MINUS 80 TO PLUS 80*C., TO A CATALYST CONSISTING ESSENTIALLY OF A CATALYTIC AMOUNT OF OXYGEN AND AN ALUMINUM ALKYL COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
47 words
THE PROCESS OF HOMOPOLYMERIZING A VINYLIDENE MONOMER CONTAINING A CH2=C< GROUP WHICH COMPRISES SUBJECTING SAID MONOMER AT A TEMPERATURE IN THE RANGE OF MINUS 80 TO PLUS 80*C., TO A CATALYST CONSISTING ESSENTIALLY OF A CATALYTIC AMOUNT OF OXYGEN AND AN ALUMINUM ALKYL COMPOUND OF THE FORMULA
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) | 1967-01-06 | 1967-07-08 | 1968-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-06 | 1971-07-08 | 1972-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-06 | 1975-07-08 | 1976-01-07 | $7700.00 | Window Closed / Lapsed |