US3498927A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for applying porous coatings on catalyst supports
Assignee: EIDP Inc
•
Filing: 1967-04-19
•
Granted: 1970-03-03
•
Expires: 1987-04-19
Abstract
No abstract record available.
Inventors
- 👤 Alvin B Stiles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:50
CPC Classifications
B; B01; B01J; B01J37/00; B01J37/0009; Y; Y10; Y10S; Y10S502/00; Y10S502/506; Y10S502/512; Y10S502/523
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2270503A
Cited
US2580806A
Cited
US2910444A
Cited
US3264228A
Cited
US3255027A
Cited
US3352636A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-02 | 1973-09-01 | 1974-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-02 | 1977-09-01 | 1978-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-02 | 1981-09-01 | 1982-03-03 | $7700.00 | Window Closed / Lapsed |