US3390201A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of dimethylbutenes
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1966-08-01
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Granted: 1968-06-25
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Expires: 1986-08-01
Abstract
No abstract record available.
Inventors
- 👤 Ernest H Drew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:41
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/26; B01J31/02; B01J31/12; B01J31/14; B01J31/143; B01J31/16; B01J31/22; B01J31/2204; B01J31/2208; B01J31/2226; B01J31/223; B01J31/2234; B01J31/24; B01J31/2404; C; C07; C07C; C07C2/00; C07C2/02; C07C2/04; C07C2/06; C07C2/08; C07C2/26; C07C2/36; C07C9/00; C07C9/14; C07C9/16; B01J2231/00; B01J2231/30; B01J2231/32; B01J2231/323; B01J2231/60; B01J2231/64; B01J2231/641; B01J2531/00; B01J2531/80; B01J2531/84; B01J2531/842; B01J2531/845; B01J2531/847; B01J31/0231; C07C2531/00; C07C2531/02; C07C2531/12; C07C2531/14; C07C2531/16; C07C2531/22; C07C2531/24; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 0
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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) | 1971-06-25 | 1971-12-25 | 1972-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-25 | 1975-12-25 | 1976-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-25 | 1979-12-25 | 1980-06-25 | $7700.00 | Window Closed / Lapsed |