US1963809A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of obtaining constituents of air having a higher boiling point than oxygen
Assignee: Linde GmbH
•
Filing: 1932-09-24
•
Granted: 1934-06-19
•
Expires: 1952-09-24
Abstract
No abstract record available.
Inventors
- 👤 Schuftan Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:02
CPC Classifications
F; F25; F25J; F25J3/00; F25J3/02; F25J3/04; F25J3/04763; F25J3/04769; F25J3/04812; F25J3/04842; F25J3/04406; F25J3/04412; F25J3/04624; F25J3/04642; F25J3/04745; F25J2200/00; F25J2200/04; F25J2200/34; F25J2200/50; F25J2200/52; F25J2205/00; F25J2205/60; F25J2205/82; F25J2245/00; F25J2245/02; F25J2250/00; F25J2250/30; F25J2250/50; F25J2290/00; F25J2290/12; Y; Y10; Y10S; Y10S62/00; Y10S62/923; Y10S62/925
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1937-06-18 | 1937-12-18 | 1938-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-06-18 | 1941-12-18 | 1942-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-06-18 | 1945-12-18 | 1946-06-19 | $7700.00 | Window Closed / Lapsed |