Patent US2959022A successfully refreshed from Google Patents.
US2959022A
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Manipulation of nitrogen-contaminated natural gases
Assignee: Individual
•
Filing: 1952-12-05
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Granted: 1960-11-08
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Expires: 1972-12-05
Abstract
No abstract record available.
Inventors
- 👤 Lee S Twomey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:13
CPC Classifications
F; F25; F25J; F25J3/00; F25J3/02; F25J3/0228; F25J3/0257; F25J1/00; F25J1/0002; F25J1/0022; F25J1/003; F25J1/0032; F25J1/004; F25J1/0045; F25J1/0047; F25J1/0052; F25J1/006; F25J1/008; F25J1/0082; F25J1/0085; F25J1/02; F25J1/0203; F25J1/0208; F25J1/0243; F25J1/0257; F25J1/0262; F25J1/0264; F25J1/0265; F25J1/0267; F25J1/0268; F25J3/0204; F25J3/0209; F25J3/0233; F25J2200/00; F25J2200/02; F25J2200/50; F25J2200/76; F25J2205/00; F25J2205/02; F25J2205/04; F25J2210/00; F25J2210/06; F25J2215/00; F25J2215/04; F25J2235/00; F25J2235/60; F25J2245/00; F25J2245/90; F25J2270/00; F25J2270/02; F25J2270/12; F25J2270/42; F25J2270/60; F25J2270/90; F25J2290/00; F25J2290/34; Y; Y10; Y10S; Y10S62/00; Y10S62/927
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-08 | 1964-05-09 | 1964-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-08 | 1968-05-09 | 1968-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-08 | 1972-05-09 | 1972-11-08 | $7700.00 | Window Closed / Lapsed |