US3661527A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for volatility and vapor pressures measurement and for distillation analysis
Assignee: Shell USA Inc
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Filing: 1970-02-24
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Granted: 1972-05-09
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Expires: 1990-02-24
Abstract
Abstract A microanalyzer for determining volatilities, vapor pressures, and for performing distillation analyses of organic materials wherein a sample of the material is supported in a removable flow-through probe on a support and heated while flowing carrier gas over the sample to saturate the carrier gas while monitoring the volatiles yields with a flame ionization detector.
Inventors
- 👤 Frank T Eggertsen
- 👤 Elmer E Seibert
- 👤 Fred H Stross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:02
CPC Classifications
G; G01; G01N; G01N25/00; G01N25/14; Y; Y10; Y10T; Y10T436/00; Y10T436/20; Y10T436/200833; Y10T436/21; Y10T436/214
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
66 words
A method for the distillation analyses of micro samples of organic materials, said method comprising: volatilizing the sample while making vapor pressure vs. temperature measurements by the method of claim 1; said measurements being obtained from the detector response at selected intervals during the sample volatilization; integrating the detector response up to said selected intervals, said integrated response serving as a quantitative measure of distillation yield.
Claim 2
Dependent Claim
13 words
The method of claim 2 wherein said detector is sensitive to organic materials.
Claim 3
Dependent Claim
13 words
The method of claim 3 wherein the sample is supported on a screen.
Claim 4
Dependent Claim
23 words
The method of claim 3 wherein the sample is heated at a rate to maintain a vapor pressure of less than 1 torr.
Claim 5
Dependent Claim
21 words
The method of claim 3 wherein the areas of the recording are integrated to obtain the yields at various cut points.
Claim 6
Dependent Claim
11 words
The process of claim 1 wherein the inert gas is nitrogen.
Claim 7
Dependent Claim
25 words
The process of claim 1 wherein the sample is less than 10 milligrams and the inert gas flow is less than 100 milliliters per minute.
Claim 8
Dependent Claim
18 words
The process of claim 1 wherein the heat rate is between 1* C. and 10* C. per minute.
Claim 9
Independent Claim
168 words
An apparatus for obtaining measurements suitable for volatility measurements and distillation analyses of organic samples, comprising: a furnace, said furnace being adapted to receive a sample probe member, and having an inlet opening and an outlet opening for establishing a gas flow therethrough; a probe member, said probe being adapted for insertion and removal from said furnace and capable of containing the sample of the material to be analyzed as a thin film, said probe in addition having inlet and outlet ports for the passage of gas; a temperature measuring means mounted in said probe member; a flow control means for establishing a known inert gas flow past the sample in said probe member and an additional inert gas flow around the probe member and through said furnace; a detecting means directly connected to the outlet of said furnace for measuring the volatiles yield; and a recording means for recording, in a correlatable manner, the detector response and the corresponding temperature as the sample is volatilized by heating.
Claim 10
Dependent Claim
48 words
The apparatus of claim 10 wherein said probe comprises an elongated tubular member having a removable end, said removable end having an outlet opening; a sample holding means for holding a sample of material to be analyzed, said means being insertable into said probe adjacent said removable end.
Claim 11
Dependent Claim
27 words
The apparatus of claim 11 wherein said furnace comprises a tubular member having an inlet and outlet ends, said inlet end being adapted to receive said probe.
Claim 12
Dependent Claim
27 words
The apparatus of claim 12 wherein said detector is provided with a heating means capable of maintaining said detector above the maximum operating temperatures of the furnace.
Claim 13
Dependent Claim
21 words
The apparatus of claim 11 wherein said sample holding means comprises a screen inserted in said probe adjacent said removable end.
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) | 1975-05-09 | 1975-11-08 | 1976-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-09 | 1979-11-08 | 1980-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-09 | 1983-11-08 | 1984-05-09 | $7700.00 | Window Closed / Lapsed |