Patent US2885354A successfully refreshed from Google Patents.
US2885354A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Distillation of petroleum hydrocarbons
Assignee: Sunoco Inc
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Filing: 1954-12-30
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Granted: 1959-05-05
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Expires: 1974-12-30
Abstract
No abstract record available.
Inventors
- 👤 Hugh L Myers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:49
CPC Classifications
C; C10; C10G; C10G7/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
METHOD FOR DISTILLING WHICH COMRISES: VAPORIZING A DISTILLATION CHARGE; PASSING EVOLVED VAPORS UPWARDLY THROUGH A FRACTIONATING COLUMN; REMOVING CONDENSATE FROM A PLATE THEREIN; HEATING THE REMOVED CONDENSATE TO INCREASE ITS HEAT CONTENT ABOVE THAT OF SUCH CONDENSATE WITHIN THE COLUMN; INTRODUCING THUS THE HEAT MATERIAL
Claim 2
Dependent Claim
45 words
METHOD FOR DISTILLING WHICH COMRISES: VAPORIZING A DISTILLATION CHARGE; PASSING EVOLVED VAPORS UPWARDLY THROUGH A FRACTIONATING COLUMN; REMOVING CONDENSATE FROM A PLATE THEREIN; HEATING THE REMOVED CONDENSATE TO INCREASE ITS HEAT CONTENT ABOVE THAT OF SUCH CONDENSATE WITHIN THE COLUMN; INTRODUCING THUS THE HEAT MATERIAL
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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) | 1962-05-04 | 1962-11-03 | 1963-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-04 | 1966-11-03 | 1967-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-04 | 1970-11-03 | 1971-05-05 | $7700.00 | Window Closed / Lapsed |