US2961291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for inhibiting cooling systems
Assignee: Individual
•
Filing: 1959-03-24
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Granted: 1960-11-22
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Expires: 1979-03-24
Abstract
No abstract record available.
Inventors
- 👤 Charles F Pickett
- 👤 Rosenfeld Myer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:36
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23F11/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
THE PROCESS OF INHIBITING CORROSION IN AN ACID CLEANED COOLING SYSTEM COMPRISING THE STEPS OF CIRCULATING THROUGH SAID SYSTEM A SODIUM SILICATE SOLUTION OF A CONCENTRATION BETWEEN APPROXIMATELY 0.18% TO 1.6% BY WEIGHT DRAINING SAID SOLUTION, ADDING A COOLING MEDIUM TO SAID SYSTEM AND ADDING SODIUM TETRABORATE IN SUCH QUANTITY AS TO CORRESPOND TO APPROXIMATELY 0.5 TO 2.5 GRAMS ANHYDROUS CONTENT PER 100 MILLILITERS OF COOLING MEDIUM.
Claim 2
Dependent Claim
67 words
THE PROCESS OF INHIBITING CORROSION IN AN ACID CLEANED COOLING SYSTEM COMPRISING THE STEPS OF CIRCULATING THROUGH SAID SYSTEM A SODIUM SILICATE SOLUTION OF A CONCENTRATION BETWEEN APPROXIMATELY 0.18% TO 1.6% BY WEIGHT DRAINING SAID SOLUTION, ADDING A COOLING MEDIUM TO SAID SYSTEM AND ADDING SODIUM TETRABORATE IN SUCH QUANTITY AS TO CORRESPOND TO APPROXIMATELY 0.5 TO 2.5 GRAMS ANHYDROUS CONTENT PER 100 MILLILITERS OF COOLING MEDIUM.
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) | 1963-11-22 | 1964-05-23 | 1964-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-22 | 1968-05-23 | 1968-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-22 | 1972-05-23 | 1972-11-22 | $7700.00 | Window Closed / Lapsed |