US2927078A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prevention of paraffin deposition
Assignee: Texaco Inc
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Filing: 1957-01-29
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Granted: 1960-03-01
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Expires: 1977-01-29
Abstract
No abstract record available.
Inventors
- 👤 Charles C Nathan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:21
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/52; C09K8/524; C10; C10L; C10L1/00; C10L1/10; C10L1/106; C10L1/12; C10L1/1233; C10L1/125; C10L1/14; C10L1/18; C10L1/192; C10L1/198; C10L1/1985; Y; Y10; Y10S; Y10S507/00; Y10S507/927; Y10S507/929; Y10S507/931; Y10T; Y10T137/00; Y10T137/0318
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
IN THE TRANSPORTATION OF PETROLEUM THROUGH A CONDUIT WHEREIN THE PETROLEUM CONTAINS WAXY MATERIALS WHICH TEND TO BUILD UP OBJECTIONABLE DEPOSITS OF SAID WAXY MATERIALS UPON THE SURFACE OF SAID CONDUIT IN CONTACT WITH SAID PETROLEUM, A METHOD OF INHIBITING THE BUILD UP OF SAID DEPOSITS ON THE SURFACE OF SAID CONDUIT BY INTRODUCING INTO SAID CONDUIT INTO ADMIXTURE WITH SAID PETROLEUM A MINOR AMOUNT OF A NONYL PHENOYL-ETHYLENE OXIDE ADDUCT IN THE PRESENCE OF FREE WATER, SAID AMOUNT OF SAID ADDUCT BEING IN THE RANGE 0.00050%-0.05000% BY VOL. BASED ON SAID ADMIXTURE.
Claim 2
Dependent Claim
93 words
IN THE TRANSPORTATION OF PETROLEUM THROUGH A CONDUIT WHEREIN THE PETROLEUM CONTAINS WAXY MATERIALS WHICH TEND TO BUILD UP OBJECTIONABLE DEPOSITS OF SAID WAXY MATERIALS UPON THE SURFACE OF SAID CONDUIT IN CONTACT WITH SAID PETROLEUM, A METHOD OF INHIBITING THE BUILD UP OF SAID DEPOSITS ON THE SURFACE OF SAID CONDUIT BY INTRODUCING INTO SAID CONDUIT INTO ADMIXTURE WITH SAID PETROLEUM A MINOR AMOUNT OF A NONYL PHENOYL-ETHYLENE OXIDE ADDUCT IN THE PRESENCE OF FREE WATER, SAID AMOUNT OF SAID ADDUCT BEING IN THE RANGE 0.00050%-0.05000% BY VOL. BASED ON SAID ADMIXTURE.
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) | 1963-03-01 | 1963-08-31 | 1964-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-01 | 1967-08-31 | 1968-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-01 | 1971-08-31 | 1972-03-01 | $7700.00 | Window Closed / Lapsed |