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US2446897A
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Process for polymerizing olefinic compounds with metal halide-organic acid double salts
Assignee: Standard Oil Development Co
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Filing: 1942-12-24
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Granted: 1948-08-10
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Expires: 1962-12-24
Abstract
No abstract record available.
Inventors
- 👤 David W Young
- 👤 Henry B Kellog
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:50
CPC Classifications
C; C08; C08F; C08F10/00; Y; Y10; Y10S; Y10S260/00; Y10S260/25
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE347606C
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US1542264A
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US1656575A
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US1671517A
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US2085535A
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FR793226A
Cited
US2181640A
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US2142980A
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US2376090A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-08-10 | 1952-02-09 | 1952-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-08-10 | 1956-02-09 | 1956-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-08-10 | 1960-02-09 | 1960-08-10 | $7700.00 | Window Closed / Lapsed |