Measuring and testing – Liquid analysis or analysis of the suspension of solids in a... – Vapor pressure
Reexamination Certificate
2007-08-16
2009-12-08
Fitzgerald, John (Department: 2856)
Measuring and testing
Liquid analysis or analysis of the suspension of solids in a...
Vapor pressure
Reexamination Certificate
active
07628057
ABSTRACT:
A system that allows an operator to determine the true vapor pressure of a liquid composition from the bubble-point pressure for a given temperature at which the lightest component starts to flash includes a heated chamber with a retractable plunger. A sample of the liquid to be tested is trapped in a chamber at a pressure above the bubble-point pressure. A plunger inserted into the chamber gradually reduces the chamber internal pressure by retracting the plunger out of the chamber at a uniform (synchronous) speed from the start to the resting plunger rod position. The chamber pressure is recorded at each pressure increment reduction. The bubble point-pressure is determined from the point of inflection in the pressure decline curve.
REFERENCES:
patent: 3499317 (1970-03-01), Hook
patent: 4332159 (1982-06-01), Chin et al.
patent: 4543819 (1985-10-01), Chin et al.
patent: 4733557 (1988-03-01), Baillie et al.
patent: 4783989 (1988-11-01), Reed
patent: 4901559 (1990-02-01), Grabner
patent: 5172586 (1992-12-01), Reed
patent: 5329811 (1994-07-01), Schultz et al.
patent: 5499531 (1996-03-01), Henderson
patent: 5563339 (1996-10-01), Compton et al.
patent: 5635631 (1997-06-01), Yesudas et al.
patent: 5637791 (1997-06-01), Alonso
patent: 5663492 (1997-09-01), Alapati et al.
patent: 5889202 (1999-03-01), Alapati et al.
patent: 6223588 (2001-05-01), Burgass et al.
American Society for Testing and Materials, Standard Test Method for Vapor Pressure of Petroleum Products (Reid Method), Jun. 1999, p. 1-10.
American Society for Testing and Materials, Standard Test Method for Vapor Pressure of Petroleum Products (Mini Method),Mar. 1999, p. 1-5.
American Society for Testing and Materials, Standard Test Method for Crude Oil: VPCR (Expansion Method), Mar. 1999, p. 1-5.
Fitzgerald John
Hall Elizabeth R.
LandOfFree
Apparatus and method for determining vapor pressure of... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus and method for determining vapor pressure of..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for determining vapor pressure of... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4084014