US3180984A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized comparison analyzer and method of analyzing
Assignee: MSA Safety Inc
•
Filing: 1962-04-11
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Granted: 1965-04-27
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Expires: 1982-04-11
Abstract
No abstract record available.
Inventors
- 👤 Glenn H Fertig
- 👤 Adrian C Billetdeaux
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:50
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/17; G01N21/25; G01N21/256; G01J; G01J1/00; G01J1/10; G01J1/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
THE METHOD OF COMPARING THE RELATIVE DENSITIES OF FLUIDS, COMPRISING: (1) INTERMITTENLY DIRECTING RADIANT ENERGY FROM A FIRST SOURCE THROUGH A CORRESPONDING FLUID SPECIMEN; (2) ALTERNATELY DIRECTING RADIANT ENERGY FROM A SECOND SOURCE THROUGH ANOTHER CORRESPONDING FLUID SPECIMEN; (3) SYNCHRONOUSLY ALTERNATELY ENERGIZING AND DEENERGIZING SAID FIRST AND SECOND SOURCES; (4) DETECTING VARIATION IN INTENSITY BETWEEN THE RADIANT ENERGY EMERGING FROM EACH SPECIMEN; (5) REDUCING THE INTENSITY OF ONE OF THE SOURCES THEREBY REDUCING THE RADIANT ENERGY DIRECTED THROUGH ONE OF
Claim 2
Independent Claim
80 words
THE METHOD OF COMPARING THE RELATIVE DENSITIES OF FLUIDS, COMPRISING: (1) INTERMITTENLY DIRECTING RADIANT ENERGY FROM A FIRST SOURCE THROUGH A CORRESPONDING FLUID SPECIMEN; (2) ALTERNATELY DIRECTING RADIANT ENERGY FROM A SECOND SOURCE THROUGH ANOTHER CORRESPONDING FLUID SPECIMEN; (3) SYNCHRONOUSLY ALTERNATELY ENERGIZING AND DEENERGIZING SAID FIRST AND SECOND SOURCES; (4) DETECTING VARIATION IN INTENSITY BETWEEN THE RADIANT ENERGY EMERGING FROM EACH SPECIMEN; (5) REDUCING THE INTENSITY OF ONE OF THE SOURCES THEREBY REDUCING THE RADIANT ENERGY DIRECTED THROUGH ONE OF
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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) | 1968-04-26 | 1968-10-26 | 1969-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-26 | 1972-10-26 | 1973-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-26 | 1976-10-26 | 1977-04-27 | $7700.00 | Window Closed / Lapsed |