US3546103A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrogenation catalysts on charcoal in guard chamber for removing metals from petroleum residua
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1969-02-03
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Granted: 1970-12-08
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Expires: 1989-02-03
Abstract
No abstract record available.
Inventors
- 👤 Glen P Hamner
- 👤 Ralph B Mason
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:09
CPC Classifications
C; C10; C10G; C10G45/00; C10G45/02; C10G45/04; C10G45/06; C10G45/08; B; B01; B01J; B01J27/00; B01J27/20; B01J27/22; C10G2300/00; C10G2300/10; C10G2300/107
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB682387A
Cited
US2755225A
Cited
US2687985A
Cited
US2766183A
Cited
US2987467A
Cited
US3367862A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-07 | 1974-06-08 | 1974-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-07 | 1978-06-08 | 1978-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-07 | 1982-06-08 | 1982-12-08 | $7700.00 | Window Closed / Lapsed |