US3373574A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of c hydrocarbons from gas mixtures containing hydrogen
Assignee: Union Carbide Corp
•
Filing: 1965-04-30
•
Granted: 1968-03-19
•
Expires: 1985-04-30
Abstract
No abstract record available.
Inventors
- 👤 Theodore F Fisher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:58
CPC Classifications
F; F25; F25J; F25J3/00; F25J3/06; F25J3/063; F25J3/0655; F25J3/02; F25J3/0204; F25J3/0219; F25J3/0228; F25J3/0233; F25J3/0238; F25J3/0252; F25J3/0605; F25J3/062; F25J3/0635; F25J3/064; F25J2205/00; F25J2205/30; F25J2205/50; F25J2210/00; F25J2210/12; F25J2270/00; F25J2270/90; Y; Y10; Y10S; Y10S62/00; Y10S62/931; Y10S62/932
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) | 1971-03-19 | 1971-09-18 | 1972-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-19 | 1975-09-18 | 1976-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-19 | 1979-09-18 | 1980-03-19 | $7700.00 | Window Closed / Lapsed |