Patent US3089382A successfully refreshed from Google Patents.
US3089382A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for analyzing fluids
Assignee: Shell USA Inc
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Filing: 1959-05-26
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Granted: 1963-05-14
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Expires: 1979-05-26
Abstract
No abstract record available.
Inventors
- 👤 George J Hecht
- 👤 Vigo N Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:23
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/17; G01N21/25; G01N21/31; G01N21/314
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
THE METHOD OF ANALYZING A SAMPLE STREAM FOR THE PRESENCE OF A COMPONENT THEREIN CAPABLE OF ABSORBING ELECTROMAGNETIC RADIATION OF SELECTED WAVE LENGTHS, SAID METHOD COMPRISING DIRECTING A SINGLE BEAM OF ELECTROMAGNETIC WAVES RADIATED FROM A RADIATION SOURCE OF FIXED INTENSITY THROUGH SAID SAMPLE STREAM, SAID BEAM OF RADIATION CONTAINING WAVE LENGTHS WITHIN A PRESELECTED BAND WHICH ARE ABSORBED BY THE COMPONENT UNDER ANALYSIS, ALTERNATELY FILTERING AND BLOCKING SAID BEAM TO PERMIT THE PASSAGE OF A NARROW BAND OF WAVE LENGTHS CENTERED ON A SELECTED REFERENCE WAVE LENGTH OF SAID RADIATION BEAM, AT WHICH WAVE LENGTH THERE IS A REDUCED AMOUNT OF ABSORPTION, SUBSEQUENTLY FILTERING SAID ORIGINAL BEAM A SECOND TIME TO PERMIT PASSAGE OF A SECOND NARROW BAND OF WAVE LENGTHS CENTERED ON A SECOND SELECTED WAVE LENGTH OF SAID
Claim 2
Independent Claim
131 words
THE METHOD OF ANALYZING A SAMPLE STREAM FOR THE PRESENCE OF A COMPONENT THEREIN CAPABLE OF ABSORBING ELECTROMAGNETIC RADIATION OF SELECTED WAVE LENGTHS, SAID METHOD COMPRISING DIRECTING A SINGLE BEAM OF ELECTROMAGNETIC WAVES RADIATED FROM A RADIATION SOURCE OF FIXED INTENSITY THROUGH SAID SAMPLE STREAM, SAID BEAM OF RADIATION CONTAINING WAVE LENGTHS WITHIN A PRESELECTED BAND WHICH ARE ABSORBED BY THE COMPONENT UNDER ANALYSIS, ALTERNATELY FILTERING AND BLOCKING SAID BEAM TO PERMIT THE PASSAGE OF A NARROW BAND OF WAVE LENGTHS CENTERED ON A SELECTED REFERENCE WAVE LENGTH OF SAID RADIATION BEAM, AT WHICH WAVE LENGTH THERE IS A REDUCED AMOUNT OF ABSORPTION, SUBSEQUENTLY FILTERING SAID ORIGINAL BEAM A SECOND TIME TO PERMIT PASSAGE OF A SECOND NARROW BAND OF WAVE LENGTHS CENTERED ON A SECOND SELECTED WAVE LENGTH OF SAID
References Cited (Backward Citations)
CA466113A
Cited
US1840500A
Cited
US2648253A
Cited
US2764692A
Cited
US2774277A
Cited
US2775160A
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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) | 1966-05-13 | 1966-11-12 | 1967-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-13 | 1970-11-12 | 1971-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-13 | 1974-11-12 | 1975-05-14 | $7700.00 | Window Closed / Lapsed |