US3069403A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for polymerizing unsaturated esters
Assignee: WR Grace and Co
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Filing: 1960-11-10
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Granted: 1962-12-18
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Expires: 1980-11-10
Abstract
No abstract record available.
Inventors
- 👤 Aristotle G Prapas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:20
CPC Classifications
C; C08; C08F; C08F18/00; C08F18/02; C08F18/04; C08F2/00; C08F2/04; C08F2/06; C08F20/00; C08F20/02; C08F20/10; C08F20/12; Y; Y10; Y10S; Y10S260/00; Y10S260/25
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
THE PROCESS OF POLYMERIZING MEMBERS OF THE GROUP CONSISTING OF VINYL ALKANOATE ESTERS, AND ALKYL ESTERS OF A ALKYLACRYLIC ACIDS WHICH COMPRISES SUBJECTING A GROUP MEMBER TO THE ACTION OF A CATALYST CONSISTING ESSENTIALLY OF AN ALUMINUM ALKYL COMPOUND HAVING THE FORMULA:
Claim 2
Dependent Claim
42 words
THE PROCESS OF POLYMERIZING MEMBERS OF THE GROUP CONSISTING OF VINYL ALKANOATE ESTERS, AND ALKYL ESTERS OF A ALKYLACRYLIC ACIDS WHICH COMPRISES SUBJECTING A GROUP MEMBER TO THE ACTION OF A CATALYST CONSISTING ESSENTIALLY OF AN ALUMINUM ALKYL COMPOUND HAVING 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) | 1965-12-17 | 1966-06-18 | 1966-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-17 | 1970-06-18 | 1970-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-17 | 1974-06-18 | 1974-12-18 | $7700.00 | Window Closed / Lapsed |