Patent US3407039A successfully refreshed from Google Patents.
US3407039A
Expired / Lapsed
US
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Oxidation of hydrogen chloride on copper exchanged mordenite
Assignee: Saint Gobain Abrasives Inc
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Filing: 1965-12-17
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Granted: 1968-10-22
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Expires: 1985-12-17
Abstract
No abstract record available.
Inventors
- 👤 Douglas E Bryant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:39
CPC Classifications
B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/18; B01J29/20; B01J29/24; B01J21/00; B01J21/16; C; C01; C01B; C01B7/00; C01B7/01; C01B7/03; C01B7/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2783286A
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US2882244A
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US3033641A
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US3033642A
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US3094383A
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US3159455A
Cited
GB941349A
Cited
US3173759A
Cited
US3323876A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-22 | 1972-04-22 | 1972-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-22 | 1976-04-22 | 1976-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-22 | 1980-04-22 | 1980-10-22 | $7700.00 | Window Closed / Lapsed |