US3332856A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vapor pressure control process for a blended product stream
Assignee: Phillips Petroleum Co
•
Filing: 1963-09-09
•
Granted: 1967-07-25
•
Expires: 1983-09-09
Abstract
No abstract record available.
Inventors
- 👤 Walter C Hart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:26
CPC Classifications
G; G05; G05D; G05D11/00; B; B01; B01D; B01D3/00; B01D3/42; B01D3/4211; B01D3/4227; C; C10; C10L; C10L1/00; C10L1/04; C10L1/06; Y; Y10; Y10S; Y10S203/00; Y10S203/19; Y10S208/00; Y10S208/01; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2499; Y10T137/2506; Y10T137/2509
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
PROCESS FOR PRODUCING A PRODUCT STREAM OF CONSTANT VOLATILITY COMPRISING: BLENDING A STREAM OF HIGHER VAPOR PRESSURE WITH A STREAM OF LOWER VAPOR PRESSURE; SENSING THE VAPOR PRESSURE OF SAID BLENDED STREAM; VARYING THE REFLUX RATE OF A FRACTIONATING COLUMN PRODUCING SAID HIGHER VAPOR PRESSURE STREAM IN RESPONSE TO SAID SENSED VAPOR PRESSURE WHEREBY THE VAPOR PRESSURE OF SAID HIGHER VAPOR PRESSURE STREAM IS VARIED INVERSELY WITH SAID SENSED VAPOR PRESSURE AND SAID SENSED VAPOR PRESSURE IS MAINTAINED CONSTANT.
Claim 2
Dependent Claim
79 words
PROCESS FOR PRODUCING A PRODUCT STREAM OF CONSTANT VOLATILITY COMPRISING: BLENDING A STREAM OF HIGHER VAPOR PRESSURE WITH A STREAM OF LOWER VAPOR PRESSURE; SENSING THE VAPOR PRESSURE OF SAID BLENDED STREAM; VARYING THE REFLUX RATE OF A FRACTIONATING COLUMN PRODUCING SAID HIGHER VAPOR PRESSURE STREAM IN RESPONSE TO SAID SENSED VAPOR PRESSURE WHEREBY THE VAPOR PRESSURE OF SAID HIGHER VAPOR PRESSURE STREAM IS VARIED INVERSELY WITH SAID SENSED VAPOR PRESSURE AND SAID SENSED VAPOR PRESSURE IS MAINTAINED CONSTANT.
References Cited (Backward Citations)
US2964992A
Cited
US2868701A
Cited
US2881235A
Cited
US3037375A
Cited
US3223107A
Cited
US3200883A
Cited
US3224210A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-24 | 1971-01-23 | 1971-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-24 | 1975-01-23 | 1975-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-24 | 1979-01-23 | 1979-07-25 | $7700.00 | Window Closed / Lapsed |