US3122912A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for determining pour point
Assignee: —
•
Filing: —
•
Granted: 1964-03-03
•
Expires: 1981-03-03
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:51
CPC Classifications
G; G01; G01N; G01N25/00; G01N25/02; G01N25/04; G01N33/00; G01N33/26; G01N33/28; G01N33/2811; G01N7/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
A METHOD FOR DETERMINING THE POUR POINT OF A NORMALLY LIQUID COMPOSITION WHICH COMPRISES COOLING SAID LIQUID COMPOSITION IN A PARTIALLY FILLED CONTAINER CONTAINING A GAS TO A TEMPERATURE BELOW ITS POINT, TRANSMITTING PRESSURE PULSES THROUGH SAID COMPOSITION, SIMULTANEOUSLY INCREASING THE TEMPERATURE OF SAID COMPOSITION AND DETERMINING THE POUR POINT FROM THE FLUCTUATIONS IN THE PRESSURE OF SAID GAS WITH RESPECT TO TEMPERATURE.
Claim 2
Independent Claim
63 words
A METHOD FOR DETERMINING THE POUR POINT OF A NORMALLY LIQUID COMPOSITION WHICH COMPRISES COOLING SAID LIQUID COMPOSITION IN A PARTIALLY FILLED CONTAINER CONTAINING A GAS TO A TEMPERATURE BELOW ITS POINT, TRANSMITTING PRESSURE PULSES THROUGH SAID COMPOSITION, SIMULTANEOUSLY INCREASING THE TEMPERATURE OF SAID COMPOSITION AND DETERMINING THE POUR POINT FROM THE FLUCTUATIONS IN THE PRESSURE OF SAID GAS WITH RESPECT TO TEMPERATURE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-03-03 | 1967-09-02 | 1968-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-03 | 1971-09-02 | 1972-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-03 | 1975-09-02 | 1976-03-03 | $7700.00 | Window Closed / Lapsed |