US2885354A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Distillation of petroleum hydrocarbons
Assignee: Sunoco Inc
•
Filing: 1954-12-30
•
Granted: 1959-05-05
•
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 07:20
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
References Cited (Backward Citations)
US1418885A
Cited
US1756156A
Cited
US1744421A
Cited
US2067627A
Cited
US2237271A
Cited
US2357113A
Cited
US2321540A
Cited
US2455679A
Cited
US2646392A
Cited
US2698282A
Cited
US2658027A
Cited
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 |