US3404099A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of iron-base catalytic masses and the resulting products
Assignee: Produits Chimiques Pechiney Saint Gobain
•
Filing: 1965-02-02
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Granted: 1968-10-01
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Expires: 1985-02-02
Abstract
No abstract record available.
Inventors
- 👤 Steinmetz Andre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:43
CPC Classifications
C; C01; C01C; C01C1/00; C01C1/02; C01C1/04; C01C1/0405; C01C1/0411; B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; C01B; C01B7/00; C01B7/01; C01B7/03; C01B7/05; B01J37/00; B01J37/02; B01J37/0201; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1068966A
Cited
US1618004A
Cited
US1489497A
Cited
US1510598A
Cited
DE1142849B
Cited
US3243386A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-01 | 1972-04-01 | 1972-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-01 | 1976-04-01 | 1976-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-01 | 1980-04-01 | 1980-10-01 | $7700.00 | Window Closed / Lapsed |