US3418215A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Distillation of propylene dimerization reaction effluent using compressed propylene as stripping vapor
Assignee: Halcon Research and Development Corp
•
Filing: 1966-08-18
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Granted: 1968-12-24
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Expires: 1986-08-18
Abstract
No abstract record available.
Inventors
- 👤 Nirenberg Lester
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:35
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/02; B01J31/12; B01J31/14; B01J31/143; B01J31/40; B01J31/4015; B01J31/4092; C; C07; C07C; C07C11/00; C07C11/02; C07C11/107; C07C7/00; C07C7/04; C07C7/05; B01J2231/00; B01J2231/30; B01J2231/32; B01J2231/323; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/584; Y10; Y10S; Y10S203/00; Y10S203/11
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2327643A
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US2371860A
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US2452797A
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US2619814A
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US2906794A
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US3096380A
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US3171865A
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US3218343A
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US3309288A
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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) | 1971-12-24 | 1972-06-24 | 1972-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-24 | 1976-06-24 | 1976-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-24 | 1980-06-24 | 1980-12-24 | $7700.00 | Window Closed / Lapsed |