Patent US3095380A successfully refreshed from Google Patents.
US3095380A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition for removal of heat scale and carbon deposits
Assignee: Purex Corp Ltd
•
Filing: 1958-07-14
•
Granted: 1963-06-25
•
Expires: 1978-07-14
Abstract
No abstract record available.
Inventors
- 👤 Arden Benjamin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:18
CPC Classifications
F; F28; F28G; F28G9/00; C; C23; C23G; C23G1/00; C23G1/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A COMPOSITION OF MATTER WHICH WHEN PRESENT IN A WATER SOLUTION IN AMOUNTS SUFFICIENT TO GIVE A FREE ALKALI CONTENT OF ABOUT 4% BY WEIGHT OF THE SOLUTION IS SUITABLE FOR THE REMOVAL OF HEAT SCALE AND CARBON DEPOSITS, SAID COMPOSITION OF MATTER CONSISTING ESSENTIALLY OF AN ALKALI METAL HYDROXIDE AND A POLYALKANOLPOLYAMINE HAVING A BOILING POINT IN EXCESS OF 400*F., SAID POLYALKANOLPOLYAMINE BEING PRESENT IN THE COMPOSITION IN AMOUNTS SUFFICIENT TO GIVE IN SAID SOLUTION FROM ABOUT .2 TO ABOUT 30% OF POLYALKANOLPOLYAMINE BY WEIGHT OF SAID SOLUTION, SAID POLYALKANOPOLYAMINE BEING DISPERSIBLE AND STABLE IN AQUEOUS ALKALINE SOLUTION AT 200*-300*F.
Claim 2
Dependent Claim
101 words
A COMPOSITION OF MATTER WHICH WHEN PRESENT IN A WATER SOLUTION IN AMOUNTS SUFFICIENT TO GIVE A FREE ALKALI CONTENT OF ABOUT 4% BY WEIGHT OF THE SOLUTION IS SUITABLE FOR THE REMOVAL OF HEAT SCALE AND CARBON DEPOSITS, SAID COMPOSITION OF MATTER CONSISTING ESSENTIALLY OF AN ALKALI METAL HYDROXIDE AND A POLYALKANOLPOLYAMINE HAVING A BOILING POINT IN EXCESS OF 400*F., SAID POLYALKANOLPOLYAMINE BEING PRESENT IN THE COMPOSITION IN AMOUNTS SUFFICIENT TO GIVE IN SAID SOLUTION FROM ABOUT .2 TO ABOUT 30% OF POLYALKANOLPOLYAMINE BY WEIGHT OF SAID SOLUTION, SAID POLYALKANOPOLYAMINE BEING DISPERSIBLE AND STABLE IN AQUEOUS ALKALINE SOLUTION AT 200*-300*F.
References Cited (Backward Citations)
US2584017A
Cited
US2240957A
Cited
US2408096A
Cited
US2524218A
Cited
US2650875A
Cited
US2759021A
Cited
US2767214A
Cited
US2755304A
Cited
US2653860A
Cited
US2653861A
Cited
US2697118A
Cited
US2808435A
Cited
US2806060A
Cited
US2777818A
Cited
US2843509A
Cited
US2992997A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-06-24 | 1966-12-24 | 1967-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-24 | 1970-12-24 | 1971-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-24 | 1974-12-24 | 1975-06-25 | $7700.00 | Window Closed / Lapsed |