US3132085A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for reducing formation of carbonaceous deposits on heat transfer surfaces
Assignee: Gulf Research and Development Co
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Filing: 1960-09-22
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Granted: 1964-05-05
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Expires: 1980-09-22
Abstract
No abstract record available.
Inventors
- 👤 Jr Claude R Summers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:26
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/221
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
A PROCESS FOR REDUCING FORMATION OF CARBONACEOUS DEPOSITS BY THERMALLY UNSTABLE HYDROCARBON OILS ON HOT, HEAT TRANSFER SURFACES CONTACTED THEREBY COMPRISING INCORPORATING IN A HYDROCARBON OIL THAT NORMALLY FORMS DEPOSITS UPON HOT, HEAT TRANSFER SURFACES PRIOR TO CONTACT WITH SAID HEAT TRANSFER SURFACES A SMALL AMOUNT, SUFFICIENT TO REDUCE DEPOSIT FORMATION, OF A CONDENSATION PRODUCT FORMED FROM AMMONIUM HYDROXIDE, FORMALDEHYDE, AND A MONOALKYLPHENOL HAVING FROM 4 TO 12 CARBON ATOMS IN
Claim 2
Dependent Claim
71 words
A PROCESS FOR REDUCING FORMATION OF CARBONACEOUS DEPOSITS BY THERMALLY UNSTABLE HYDROCARBON OILS ON HOT, HEAT TRANSFER SURFACES CONTACTED THEREBY COMPRISING INCORPORATING IN A HYDROCARBON OIL THAT NORMALLY FORMS DEPOSITS UPON HOT, HEAT TRANSFER SURFACES PRIOR TO CONTACT WITH SAID HEAT TRANSFER SURFACES A SMALL AMOUNT, SUFFICIENT TO REDUCE DEPOSIT FORMATION, OF A CONDENSATION PRODUCT FORMED FROM AMMONIUM HYDROXIDE, FORMALDEHYDE, AND A MONOALKYLPHENOL HAVING FROM 4 TO 12 CARBON ATOMS IN
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) | 1967-05-05 | 1967-11-04 | 1968-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-05 | 1971-11-04 | 1972-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-05 | 1975-11-04 | 1976-05-05 | $7700.00 | Window Closed / Lapsed |