US3066494A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of and apparatus for low-temperature separation of air
Assignee: Union Carbide Corp
•
Filing: 1958-05-26
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Granted: 1962-12-04
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Expires: 1978-05-26
Abstract
No abstract record available.
Inventors
- 👤 Lawrence D Potts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:53
CPC Classifications
F; F25; F25J; F25J3/00; F25J3/02; F25J3/04; F25J3/04151; F25J3/04242; F25J3/04248; F25J3/04254; F25J3/0426; F25J3/04284; F25J3/0429; F25J3/04303; F25J3/04375; F25J3/04393; F25J3/04406; F25J3/04412; F25J3/04763; F25J3/04769; F25J3/04854; F25J2200/00; F25J2200/50; F25J2200/52; F25J2205/00; F25J2205/24; F25J2205/30; F25J2205/60; F25J2205/62; F25J2210/00; F25J2210/50; F25J2250/00; F25J2250/20
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) | 1965-12-03 | 1966-06-04 | 1966-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-03 | 1970-06-04 | 1970-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-03 | 1974-06-04 | 1974-12-04 | $7700.00 | Window Closed / Lapsed |