US3070994A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxide indicator
Assignee: Garrett Corp
•
Filing: 1957-08-28
•
Granted: 1963-01-01
•
Expires: 1977-08-28
Abstract
No abstract record available.
Inventors
- 👤 Archibald P Kelley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:54
CPC Classifications
G; G01; G01N; G01N25/00; G01N25/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
IN A METHOD OF DETERMINING THE AMOUNT OF AN OXIDE OF AN ALKALI METAL DISSOLVED IN A SOLUTION OF THE METAL, THE STEPS COMPRISING: PASSING A LIQUID SOLUTION OF THE METAL THROUGH A PASSAGE MEANS CONTAINING A FLOW RESTRICTION; COOLING SAID LIQUID SOLUTION UPSTREAM OF SAID FLOW RESTRICTION; MEASURING THE TEMPERATURES OF SAID SOLUTION ON EACH SIDE OF SAID FLOW RESTRICTION; AND RECORDING THE TEMPERATURE OF SAID SOLUTION UPSTREAM OF SAID FLOW RESTRICTION AT THE INSTANT THE TEMPERATURES ON OPPOSITE SIDES OF SAID FLOW RESTRICTION DIFFER BY MORE THAN A PREDETERMINED AMOUNT.
Claim 2
Dependent Claim
92 words
IN A METHOD OF DETERMINING THE AMOUNT OF AN OXIDE OF AN ALKALI METAL DISSOLVED IN A SOLUTION OF THE METAL, THE STEPS COMPRISING: PASSING A LIQUID SOLUTION OF THE METAL THROUGH A PASSAGE MEANS CONTAINING A FLOW RESTRICTION; COOLING SAID LIQUID SOLUTION UPSTREAM OF SAID FLOW RESTRICTION; MEASURING THE TEMPERATURES OF SAID SOLUTION ON EACH SIDE OF SAID FLOW RESTRICTION; AND RECORDING THE TEMPERATURE OF SAID SOLUTION UPSTREAM OF SAID FLOW RESTRICTION AT THE INSTANT THE TEMPERATURES ON OPPOSITE SIDES OF SAID FLOW RESTRICTION DIFFER BY MORE THAN A PREDETERMINED AMOUNT.
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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) | 1965-12-31 | 1966-07-02 | 1967-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-31 | 1970-07-02 | 1971-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-31 | 1974-07-02 | 1975-01-01 | $7700.00 | Window Closed / Lapsed |