US2728690A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Specific gravity control apparatus and method of using same
Assignee: Olin Corp
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Filing: 1953-03-31
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Granted: 1955-12-27
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Expires: 1973-03-31
Abstract
No abstract record available.
Inventors
- 👤 Walter C Saeman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:59
CPC Classifications
G; G01; G01N; G01N9/00; G01N9/10; G01N9/12; G01N9/18; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0324; Y10T137/0329; Y10T137/0335; Y10T137/2496; Y10T137/2499; Y10T137/2504
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
113 words
THE METHOD OF HANDLING AN AQUEOUS DISPERSION COATING COMPOSITION WHICH COMPRISES CONTINUOUSLY CIRCULATING SAID AQUEOUS DISPERSION FROM A FEED SUPPLY THEREOF AND TRAPPING A CONSTANT OVERFLOW HEAD OF SAID CIRCULATED AQUEOUS DISPERSION, CONTINUOUSLY DELIVERING AQUEOUS DISPERSION FROM SAID TRAPPED CONSTANT HEAD FOR CIRCULATION THROUGH A COATING FOUNTAIN SUPPLY WHILE DRAINING THE OVERFLOW FROM SAID TRAPPED CONSTANT HEAD AND THE CIRCULATION THROUGH SAID FOUNTAIN SUPPLY BACK TO SAID FEED SUPPLY, CONTINUOUSLY SENSING THE SPECIFIC GRAVITY OF SAID AQUEOUS DISPERSION AT THE TRAPPED CONSTANT HEAD THEREOF, AND ADDING WATER INTERMITTENTLY TO THE AQUEOUS DISPERSION CIRCULATED FROM SAID FEED SUPPLY UPON VARIATION OF THE SENSED SPECIFIC GRAVITY AT SAID TRAPPED CONSTANT HEAD FROM A DESIRED VALUE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-12-26 | 1959-06-27 | 1959-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-26 | 1963-06-27 | 1963-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-26 | 1967-06-27 | 1967-12-27 | $7700.00 | Window Closed / Lapsed |