Patent US2592572A successfully refreshed from Google Patents.
US3383301A
Expired / Lapsed
US
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Residue desulfurization with catalyst whose pore volume is distributed over wide range of pore sizes
Assignee: Gulf Research and Development Co
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Filing: 1966-01-20
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Granted: 1968-05-14
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Expires: 1986-01-20
Abstract
No abstract record available.
Inventors
- 👤 Beuther Harold
- 👤 Bruce K Schmid
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:10
CPC Classifications
B; B01; B01J; B01J35/00; B01J35/60; B01J35/66; B01J35/61; B01J35/615; B01J35/63; B01J35/633; B01J35/64; B01J35/647; C; C10; C10G; C10G2300/00; C10G2300/10; C10G2300/107
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) | 1971-05-14 | 1971-11-13 | 1972-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-14 | 1975-11-13 | 1976-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-14 | 1979-11-13 | 1980-05-14 | $7700.00 | Window Closed / Lapsed |