US3371468A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1966-07-08
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Granted: 1968-03-05
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Expires: 1986-07-08
Abstract
No abstract record available.
Inventors
- 👤 Joseph A Shropshire
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:39
CPC Classifications
C; C01; C01B; C01B23/00; B; B01; B01D; B01D69/00; B01D69/14; B01D69/141; B01D69/148; C01B3/00; C01B3/50; C01B3/501; C01B3/503; C01B2203/00; C01B2203/04; C01B2203/0405; C01B2203/0465; C01B2203/0475; C01B2203/048
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2835343A
Cited
US2972349A
Cited
US3130156A
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US3244763A
Cited
US3208883A
Cited
US3228394A
Cited
US3266629A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-05 | 1971-09-04 | 1972-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-05 | 1975-09-04 | 1976-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-05 | 1979-09-04 | 1980-03-05 | $7700.00 | Window Closed / Lapsed |