US3010853A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of cleaning pipes and the like
Assignee: Solvent Service Inc
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Filing: 1959-05-14
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Granted: 1961-11-28
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Expires: 1979-05-14
Abstract
No abstract record available.
Inventors
- 👤 William R Elliott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:58
CPC Classifications
F; F28; F28G; F28G9/00; C; C23; C23C; C23C22/00; C23C22/02; C23C22/03; C23G; C23G5/00; C23G5/02; C23G5/024
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
THE METHOD OF CLEANING PIPES AND THE LIKE TO REMOVE MILL SCALE, RUST AND GREASY DEPOSITS THEREFROM WHICH CONSISTS IN CIRCULATING THERETHROUGH AND UNDER PRESSURE A SOLUTION OF A HYDROCARBON AND A PHOSPHORIC ACID ESTER WHEREBY SAID HYDROCARBON EMULSIFIES THE GREASY DEPOSITE AND THE PHOSPHORIC ACID ESTER REACTS WITH THE MILL SCALE AND RUST TO FORM IRON OXIDE AND SUBSEQUENTLY SUBJECTING SAID SOLUTION TO HYDROCHLORIC ACID WHEREBY SAID PHOSPHORIC ACID ESTER IS RECONSTITUTED BY THE HYDROCHLORIC ACID FORMING THE SALT OF THE HYDROCHLORIC ACID AND RESTORING THE HYDROGEN IN THE ACID RADICAL OF THE PHOSPHORIC ACID ESTER.
Claim 2
Independent Claim
97 words
THE METHOD OF CLEANING PIPES AND THE LIKE TO REMOVE MILL SCALE, RUST AND GREASY DEPOSITS THEREFROM WHICH CONSISTS IN CIRCULATING THERETHROUGH AND UNDER PRESSURE A SOLUTION OF A HYDROCARBON AND A PHOSPHORIC ACID ESTER WHEREBY SAID HYDROCARBON EMULSIFIES THE GREASY DEPOSITE AND THE PHOSPHORIC ACID ESTER REACTS WITH THE MILL SCALE AND RUST TO FORM IRON OXIDE AND SUBSEQUENTLY SUBJECTING SAID SOLUTION TO HYDROCHLORIC ACID WHEREBY SAID PHOSPHORIC ACID ESTER IS RECONSTITUTED BY THE HYDROCHLORIC ACID FORMING THE SALT OF THE HYDROCHLORIC ACID AND RESTORING THE HYDROGEN IN THE ACID RADICAL OF THE PHOSPHORIC ACID ESTER.
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) | 1964-11-27 | 1965-05-29 | 1965-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-11-27 | 1969-05-29 | 1969-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-11-27 | 1973-05-29 | 1973-11-28 | $7700.00 | Window Closed / Lapsed |