US2956410A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas separation
Assignee: MW Kellogg Co
•
Filing: 1956-10-05
•
Granted: 1960-10-18
•
Expires: 1976-10-05
Abstract
No abstract record available.
Inventors
- 👤 Dominic F Palazzo
- 👤 Warren C Schreiner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:14
CPC Classifications
F; F25; F25J; F25J3/00; F25J3/02; F25J3/0228; F25J3/0233; F25J3/0204; F25J3/0219; F25J3/0242; F25J3/0252; F25J2205/00; F25J2205/02; F25J2205/04; F25J2205/50; F25J2210/00; F25J2210/12; F25J2270/00; F25J2270/04; F25J2270/06; Y; Y10; Y10S; Y10S62/00; Y10S62/931; Y10S62/934
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1963-10-18 | 1964-04-18 | 1964-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-18 | 1968-04-18 | 1968-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-18 | 1972-04-18 | 1972-10-18 | $7700.00 | Window Closed / Lapsed |