US2802788A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cleaning composition for automotive
Assignee: —
•
Filing: —
•
Granted: 1957-08-13
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Expires: 1974-08-13
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:26
CPC Classifications
C; C11; C11D; C11D1/00; C11D1/66; C11D1/72; C23; C23G; C23G1/00; C23G1/24
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
91 words
A CLEANING SOLUTION FOR AUTOMOTIVE COOLING SYSTEMS CONSISTING ESSSENTALLY OF WATER CONTAINING ABOUT 2% TO 4% OF A CLEANING COMPOSITION THEREIN, THE SOLU TION HAVING A PH BETWEEN ABOUT 7.5, THE COMPOSITION CONSISTING ESSENTIALLY OF: ABOUT 15% TO 18% OF A SALT OF ETHYLENE DIAMINE TETRAACETIC ACID;ABOUT 60% OF AN ALKALI METAL TRIPOLYPHOSPHATE; ABOUT 20% OF AN ALKALI METAL SULFITE; AND ABOUT 2% TO 4% OF MIXED MONOAND DI-OLEIC ACID ESTERS OF POLYOXETHYLEN GLYCOL OF OBOUT 200 TO ABOUT 1,000 MOLECULAR WEIGHT, EACH OF THE SPECIFIED PERCENTAGE BEING ON A PERCENT-BY-BASIS.
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) | 1960-08-12 | 1961-02-11 | 1961-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-12 | 1965-02-11 | 1965-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-12 | 1969-02-11 | 1969-08-13 | $7700.00 | Window Closed / Lapsed |