Patent US2882237A successfully refreshed from Google Patents.
US2882237A
Expired / Lapsed
US
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Method for oxidizing carbonaceous deposits
Assignee: Shell Development Co
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Filing: 1956-05-29
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Granted: 1959-04-14
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Expires: 1976-05-29
Abstract
No abstract record available.
Inventors
- 👤 Mahoney Clarence Lynn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:18
CPC Classifications
B; B08; B08B; B08B9/00; B08B9/02; B08B9/027; B08B9/032; C; C10; C10B; C10B43/00; C10B43/02; C10B43/08; C10B43/10; F; F23; F23J; F23J3/00; F23J3/02; F28; F28G; F28G9/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
THE METHOD OF REMOVING CARBONACEOUS RESINOUS OR GUMMY DEPOSITS RESULTING FROM THE COKING OF HYDROCARBONS FROM THE INNER SURFACE''S OF TUBES WHICH COMPRISES FLOWING THROUGH SAID TUBES A SOLUTION CONSISTING ESSENTIALLY OF WATER, HYDROGEN PEROXIDE IN AMOUNT BETWEEN 12 AND 27 WEIGHT PERCENT AND AMMONIUM HYDROXIDE IN AMOUNT BETWEEN 3. AND 32 WEIGHT PERCENT.
Claim 2
Independent Claim
54 words
THE METHOD OF REMOVING CARBONACEOUS RESINOUS OR GUMMY DEPOSITS RESULTING FROM THE COKING OF HYDROCARBONS FROM THE INNER SURFACE''S OF TUBES WHICH COMPRISES FLOWING THROUGH SAID TUBES A SOLUTION CONSISTING ESSENTIALLY OF WATER, HYDROGEN PEROXIDE IN AMOUNT BETWEEN 12 AND 27 WEIGHT PERCENT AND AMMONIUM HYDROXIDE IN AMOUNT BETWEEN 3. AND 32 WEIGHT PERCENT.
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) | 1962-04-13 | 1962-10-13 | 1963-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-13 | 1966-10-13 | 1967-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-13 | 1970-10-13 | 1971-04-14 | $7700.00 | Window Closed / Lapsed |