US3472631A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for carrying out exothermic catalytic gas reactions
Assignee: ROBERT H SCHOBER
•
Filing: 1966-04-25
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Granted: 1969-10-14
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Expires: 1986-04-25
Abstract
No abstract record available.
Inventors
- 👤 Robert H Schober
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:47
CPC Classifications
C; C01; C01C; C01C1/00; C01C1/02; C01C1/04; C01C1/0405; C01C1/0417; C01C1/0423; B; B01; B01J; B01J8/00; B01J8/0005; B01J8/02; B01J8/04; B01J8/0403; C01B; C01B3/00; C01B3/02; C01B3/06; C01B3/12; C01B3/16; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1686371A
Cited
US1909378A
Cited
US2512586A
Cited
GB795403A
Cited
US3146074A
Cited
DE1142586B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-13 | 1973-04-14 | 1973-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-13 | 1977-04-14 | 1977-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-13 | 1981-04-14 | 1981-10-14 | $7700.00 | Window Closed / Lapsed |