US3393527A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of fractionating natural gas to remove heavy hydrocarbons therefrom
Assignee: KENACO Inc
•
Filing: 1966-01-03
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Granted: 1968-07-23
•
Expires: 1986-01-03
Abstract
No abstract record available.
Inventors
- 👤 Leonard K Swenson
- 👤 Roger W Parrish
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:49
CPC Classifications
F; F25; F25J; F25J3/00; F25J3/02; F25J3/0228; F25J3/0247; C; C10; C10G; C10G5/00; C10G5/06; F25J3/0204; F25J3/0209; F25J3/0233; F25J2200/00; F25J2200/02; F25J2200/50; F25J2200/74; F25J2205/00; F25J2205/02; F25J2205/04; F25J2205/50; F25J2220/00; F25J2220/60; F25J2220/68; F25J2240/00; F25J2240/02; F25J2270/00; F25J2270/12; F25J2270/60; F25J2270/90; F25J2270/902
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) | 1971-07-23 | 1972-01-22 | 1972-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-23 | 1976-01-22 | 1976-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-23 | 1980-01-22 | 1980-07-23 | $7700.00 | Window Closed / Lapsed |