US3510422A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite silicate-zeolite catalyst
Assignee: Texaco Inc
•
Filing: 1967-09-11
•
Granted: 1970-05-05
•
Expires: 1987-09-11
Abstract
No abstract record available.
Inventors
- 👤 Edward L Cole
- 👤 Edwin C Knowles
- 👤 Eugene E Sensel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:52
CPC Classifications
C; C01; C01B; C01B33/00; C01B33/20; C01B33/26; C01B33/28; C01B33/2807; C01B33/2861; B; B01; B01J; B01J20/00; B01J20/02; B01J20/10; B01J20/16; B01J20/18; B01J20/183; B01J29/00; B01J29/04; B01J29/06; B01J29/061; C01B33/2815; C01B33/2838; C01B33/2869
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2500197A
Cited
US3321272A
Cited
US3341284A
Cited
US3140253A
Cited
US3244643A
Cited
US3365272A
Cited
FR1463444A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-04 | 1973-11-03 | 1974-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-04 | 1977-11-03 | 1978-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-04 | 1981-11-03 | 1982-05-05 | $7700.00 | Window Closed / Lapsed |