US3540868A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control of carbon deposition in catalyst beds
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1967-12-29
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Granted: 1970-11-17
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Expires: 1987-12-29
Abstract
No abstract record available.
Inventors
- 👤 Alexander Chevion
- 👤 Raul Chao
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:11
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/02; G01N27/04; G01N27/043; B; B01; B01J; B01J23/00; B01J23/70; B01J23/74; B01J23/755; B01J23/90; B01J23/94; B01J38/00; B01J38/04; B01J38/06; C; C01; C01B; C01B3/00; C01B3/02; C01B3/06; C01B3/12; C01B3/16; C01B3/32; C01B3/34; C01B3/38; B01J35/00; B01J35/50; B01J35/55; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52; Y10; Y10T; Y10T436/00; Y10T436/23
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2753246A
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US2984542A
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US2994821A
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US3027238A
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US3116979A
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US3414382A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-16 | 1974-05-18 | 1974-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-16 | 1978-05-18 | 1978-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-16 | 1982-05-18 | 1982-11-17 | $7700.00 | Window Closed / Lapsed |