US3528783A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multilayer catalytic reactor
Assignee: Marston Excelsior Ltd
•
Filing: 1965-06-14
•
Granted: 1970-09-15
•
Expires: 1985-06-14
Abstract
No abstract record available.
Inventors
- 👤 Georffrey Gordon Haselden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:52
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/24; B01J19/248; B01J19/249; B01J35/00; B01J35/50; B01J35/55; B01J8/00; B01J8/008; B01J2208/00; B01J2208/02; B01J2208/021; B01J2208/022; B01J2219/00; B01J2219/24; B01J2219/2401; B01J2219/245; B01J2219/2451; B01J2219/2453; B01J2219/2456; B01J2219/2458; B01J2219/2459; B01J2219/2461; B01J2219/2462; B01J2219/2469; B01J2219/2471; B01J2219/2472; B01J2219/2474; B01J2219/2476; B01J2219/2477; B01J2219/2481; B01J2219/2491; B01J2219/2492; B01J2219/2493; B01J2219/2498
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1043580A
Cited
US2408164A
Cited
US2644800A
Cited
US2664340A
Cited
US2887456A
Cited
US3100140A
Cited
US3289750A
Cited
US3295919A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-14 | 1974-03-16 | 1974-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-14 | 1978-03-16 | 1978-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-14 | 1982-03-16 | 1982-09-15 | $7700.00 | Window Closed / Lapsed |