US3026472A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Null type gas analyzer
Assignee: Beckman Coulter Inc
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Filing: 1959-08-24
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Granted: 1962-03-20
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Expires: 1979-08-24
Abstract
No abstract record available.
Inventors
- 👤 Malbone W Greene
- 👤 Jan W Haagen-Smit
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:45
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/72; G01N27/74
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
IN A NULL TYPE INSTRUMENT FOR MEASURING THE QUANTITY OF A PARTICULAR GAS PRESENT IN A GAS MIXTURE WHEREIN A PIVOTALLY MOUNTED TEST BODY IS DEFELECTED FROM A NULL POSITION WHEN THE PARTICULAR GAS IS PRESENT AND IS RESTORED TO THE NULL POSITION BY AN ELECTROSTATIC FORCE, WITH THE RESTORING FORCE BEING FUNCTION OF THE QUANTITY OF THE PARTICULAR GAS PRESENT, THE COMBINATION OF: A HOUSING; A TEST BODY HAVING A GOLD SURFACE; SUSPENSION MEANS FOR SUSPENDING SAID TEST BODY IN SAID HOUSING FOR ROTATION ABOUT AN AXIS; ELECTRODE MEANS MOUNTED IN SAID HOUSING FOR GENERATING AN ELECTRIC FIELD FOR PRODUCING AN ELECTROSTATIC FORCE ON SAID TEST BODY, SAID ELECTRODE MEANS HAVING GOLD SURFACES; AND MEANS FOR DETECTING ROTATION OF SAID TEST BODY AND VARYING THE ELECTRIC POTENTIAL BETWEEN SAID TEST BODY AND ELECTRODE MEANS TO OPPOSE SAID ROTATION.
Claim 2
Dependent Claim
139 words
IN A NULL TYPE INSTRUMENT FOR MEASURING THE QUANTITY OF A PARTICULAR GAS PRESENT IN A GAS MIXTURE WHEREIN A PIVOTALLY MOUNTED TEST BODY IS DEFELECTED FROM A NULL POSITION WHEN THE PARTICULAR GAS IS PRESENT AND IS RESTORED TO THE NULL POSITION BY AN ELECTROSTATIC FORCE, WITH THE RESTORING FORCE BEING FUNCTION OF THE QUANTITY OF THE PARTICULAR GAS PRESENT, THE COMBINATION OF: A HOUSING; A TEST BODY HAVING A GOLD SURFACE; SUSPENSION MEANS FOR SUSPENDING SAID TEST BODY IN SAID HOUSING FOR ROTATION ABOUT AN AXIS; ELECTRODE MEANS MOUNTED IN SAID HOUSING FOR GENERATING AN ELECTRIC FIELD FOR PRODUCING AN ELECTROSTATIC FORCE ON SAID TEST BODY, SAID ELECTRODE MEANS HAVING GOLD SURFACES; AND MEANS FOR DETECTING ROTATION OF SAID TEST BODY AND VARYING THE ELECTRIC POTENTIAL BETWEEN SAID TEST BODY AND ELECTRODE MEANS TO OPPOSE SAID ROTATION.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-03-19 | 1965-09-18 | 1966-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-19 | 1969-09-18 | 1970-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-19 | 1973-09-18 | 1974-03-20 | $7700.00 | Window Closed / Lapsed |