US3019195A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and composition for treating cooling water
Assignee: Dearborn Chemical Co
•
Filing: 1959-05-01
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Granted: 1962-01-30
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Expires: 1979-05-01
Abstract
No abstract record available.
Inventors
- 👤 Wayne L Denman
- 👤 Kerst Herman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:17
CPC Classifications
F; F22; F22D; F22D11/00; F22D11/006; C; C02; C02F; C02F5/00; C02F5/08; C02F5/10; C02F5/105
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
A COMPOSITION FOR TREATING CIRCULATING WATER SYSTEMS COMPRISING A DRY MIXTURE OF A WATER SOLUBLE POLYPHOSPHATE, A WATER SOLUBLE CHROMATE A WATER SOLUBLE ZINC COMPOUND, AND A POLYVINYL ALCOHOL HAVING A PERCENT HYDROLYSIS AND VISCOSITY RELATION CONTAINED WITHIN THE CURVE BOUNDED BY THE LINES ABCDA OF FIGURE 1.
Claim 2
Dependent Claim
48 words
A COMPOSITION FOR TREATING CIRCULATING WATER SYSTEMS COMPRISING A DRY MIXTURE OF A WATER SOLUBLE POLYPHOSPHATE, A WATER SOLUBLE CHROMATE A WATER SOLUBLE ZINC COMPOUND, AND A POLYVINYL ALCOHOL HAVING A PERCENT HYDROLYSIS AND VISCOSITY RELATION CONTAINED WITHIN THE CURVE BOUNDED BY THE LINES ABCDA OF FIGURE 1.
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) | 1965-01-29 | 1965-07-31 | 1966-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-29 | 1969-07-31 | 1970-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-29 | 1973-07-31 | 1974-01-30 | $7700.00 | Window Closed / Lapsed |