US3062744A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preventing heat exchanger deposits
Assignee: Universal Oil Products Co
•
Filing: 1958-08-08
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Granted: 1962-11-06
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Expires: 1978-08-08
Abstract
No abstract record available.
Inventors
- 👤 Ralph B Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:03
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/234; C10L1/236; C23; C23F; C23F14/00; C23F14/02; F; F28; F28F; F28F19/00; C10L1/2366; C10L1/2368
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
IN A PROCESS WHEREIN TWO HYDROCARBON FLUIDS ARE PASSED IN INDIRECT HEAT EXCHANGE RELATIONSHIP AT DIFFERENT TEMPERATURES THROUGH A HEAT EXCHANGER, THE METHOD WHICH COMPRISES PREVENTING DEPOSIT FORMATION IN SAID HEAT EXCHANGER BY INCORPORATING IN AT LEAST ONE OF SAID FLUIDS FROM ABOUT 1 TO ABOUT 1000 PARTS PER MILLION BY WEIGHT OF AN OIL SOLUBLE HCI SALT OF A COPOLYMER CONTAINING IN COMBINED FORM AS ITS ESSENTIAL MONOMERIC COMPONENTS A COPOLYMERIZABLE (1) AMINE-FREE UNSATURATED COMPOUND HAVING A POLYMERIZABLE ETHYLENIC LINKAGE AND (2) AN UNSATURATED COMPOUND HAVING A POLYMERIZABLE ETHYLENIC LINKAGE AND BASIC AMINO NITROGEN, AT LEAST ONE OF SAID MONOMERIC COMPONENTS CONTAINING AN ALIPHATIC HYDROCARBON SIDE CHAIN OF FROM ABOUT 8 TO ABOUT 18 CARBON ATOMS AND SAID COPOLYMER CONTAINING A TOTAL OF FROM ABOUT 0.1% TO ABOUT 3.5% BY WEIGHT OF BASIC AMINO NITROGEN AND AT LEAST 0.2% TO ABOUT 20% OF THE BASIC AMINO NITROGEN BEING NEUTRALIZED WITH HCL.
Claim 2
Dependent Claim
152 words
IN A PROCESS WHEREIN TWO HYDROCARBON FLUIDS ARE PASSED IN INDIRECT HEAT EXCHANGE RELATIONSHIP AT DIFFERENT TEMPERATURES THROUGH A HEAT EXCHANGER, THE METHOD WHICH COMPRISES PREVENTING DEPOSIT FORMATION IN SAID HEAT EXCHANGER BY INCORPORATING IN AT LEAST ONE OF SAID FLUIDS FROM ABOUT 1 TO ABOUT 1000 PARTS PER MILLION BY WEIGHT OF AN OIL SOLUBLE HCI SALT OF A COPOLYMER CONTAINING IN COMBINED FORM AS ITS ESSENTIAL MONOMERIC COMPONENTS A COPOLYMERIZABLE (1) AMINE-FREE UNSATURATED COMPOUND HAVING A POLYMERIZABLE ETHYLENIC LINKAGE AND (2) AN UNSATURATED COMPOUND HAVING A POLYMERIZABLE ETHYLENIC LINKAGE AND BASIC AMINO NITROGEN, AT LEAST ONE OF SAID MONOMERIC COMPONENTS CONTAINING AN ALIPHATIC HYDROCARBON SIDE CHAIN OF FROM ABOUT 8 TO ABOUT 18 CARBON ATOMS AND SAID COPOLYMER CONTAINING A TOTAL OF FROM ABOUT 0.1% TO ABOUT 3.5% BY WEIGHT OF BASIC AMINO NITROGEN AND AT LEAST 0.2% TO ABOUT 20% OF THE BASIC AMINO NITROGEN BEING NEUTRALIZED WITH HCL.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-11-05 | 1966-05-07 | 1966-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-05 | 1970-05-07 | 1970-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-05 | 1974-05-07 | 1974-11-06 | $7700.00 | Window Closed / Lapsed |