US2908819A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for measuring properties of gases
Assignee: Phillips Petroleum Co
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Filing: 1955-06-13
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Granted: 1959-10-13
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Expires: 1975-06-13
Abstract
No abstract record available.
Inventors
- 👤 John W Marx
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:50
CPC Classifications
G; G01; G01N; G01N23/00; G01N23/02; G01N23/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
MEASURING APPARATUS COMPRISING MEANS DEFINING A FLUID-TIGHT CHAMBER, A FIRST CHARGED PARTICLE EMITTING ELECTRODE POSITIONED IN SAID CHAMBER, A SECOND ELECTRODE POSITIONED IN SAID CHAMBER IN SPACED RELATIONSHIP WITH SAID FIRST ELECTRODE, THE CONFIGURATION OF SAID FIRST AND SECOND ELECTRODES BEING SUCH THAT THE DISTANCE THEREBETWEEN VARIES FROM ONE END OF SAID FIRST ELECTRODE TO THE SECOND END THEREOF, AND MEANS TO MEASURE THE PARTICLES EMITTED FROM SAID FIRST ELECTRODE WHICH REACH SAID SECOND ELECTRODE.
Claim 2
Dependent Claim
75 words
MEASURING APPARATUS COMPRISING MEANS DEFINING A FLUID-TIGHT CHAMBER, A FIRST CHARGED PARTICLE EMITTING ELECTRODE POSITIONED IN SAID CHAMBER, A SECOND ELECTRODE POSITIONED IN SAID CHAMBER IN SPACED RELATIONSHIP WITH SAID FIRST ELECTRODE, THE CONFIGURATION OF SAID FIRST AND SECOND ELECTRODES BEING SUCH THAT THE DISTANCE THEREBETWEEN VARIES FROM ONE END OF SAID FIRST ELECTRODE TO THE SECOND END THEREOF, AND MEANS TO MEASURE THE PARTICLES EMITTED FROM SAID FIRST ELECTRODE WHICH REACH SAID SECOND ELECTRODE.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-12 | 1963-04-13 | 1963-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-12 | 1967-04-13 | 1967-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-12 | 1971-04-13 | 1971-10-13 | $7700.00 | Window Closed / Lapsed |