US3535271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of nickel-copper catalyst
Assignee: General Electric Co
•
Filing: 1968-03-04
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Granted: 1970-10-20
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Expires: 1988-03-04
Abstract
No abstract record available.
Inventors
- 👤 Olin M Fuller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:54
CPC Classifications
C; C07; C07C; C07C37/00; C07C37/06; C07C37/07; B; B01; B01J; B01J23/00; B01J23/70; B01J23/72; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52; Y10; Y10S; Y10S502/00; Y10S502/506; Y10S502/509
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) | 1973-10-19 | 1974-04-20 | 1974-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-19 | 1978-04-20 | 1978-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-19 | 1982-04-20 | 1982-10-20 | $7700.00 | Window Closed / Lapsed |