US2836559A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for controlling wax deposition
Assignee: Sunoco Inc
•
Filing: 1954-07-29
•
Granted: 1958-05-27
•
Expires: 1974-07-29
Abstract
No abstract record available.
Inventors
- 👤 Bock Morris
- 👤 Jr James C Spalding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:50
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/18; C10L1/192; C10L1/198; C10L1/1985; C09; C09K; C09K8/00; C09K8/52; C09K8/524; Y; Y10; Y10S; Y10S507/00; Y10S507/927; Y10S507/929; Y10S507/931
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
PROCESS FOR INHIBITING THE ACCUMULATION OF WAX FROM CRUDE PETROLEUM UPON SURFACES OF A SYSTEM THROUGH WHICH THE CRUDE PETROLEUM IS TRANSPORTED WHICH COMPRISES INTRODUCING INTO THE SYSTEM, IN THE PRESENCE OF THE CRUDE PETROLEUM AND PRIOR TO THE ACCUMULATION OF SUBSTANTIAL AMOUNTS OF WAX THEREIN, AN INHIBITING AMOUNT OF AN INHIBITOR THE ESSENTIAL ACTIVE INGREDIENT OF WHICH IS A POLYOXYETHYLENE ETHER OF A HEXITAN PARTIAL ESTER OF AN ORGANIC CARBOXYLIC ACID HAVING 12-22 CARBON ATOMS AND SELECTED FROM THE GROUP CONSISTING OF FATTY, NAPHTHENIC AND RESIN ACIDS, SAID ETHER CONTAINING 4-30 OXYETHYLENE GROUPS PER ACID RADICAL.
Claim 2
Dependent Claim
97 words
PROCESS FOR INHIBITING THE ACCUMULATION OF WAX FROM CRUDE PETROLEUM UPON SURFACES OF A SYSTEM THROUGH WHICH THE CRUDE PETROLEUM IS TRANSPORTED WHICH COMPRISES INTRODUCING INTO THE SYSTEM, IN THE PRESENCE OF THE CRUDE PETROLEUM AND PRIOR TO THE ACCUMULATION OF SUBSTANTIAL AMOUNTS OF WAX THEREIN, AN INHIBITING AMOUNT OF AN INHIBITOR THE ESSENTIAL ACTIVE INGREDIENT OF WHICH IS A POLYOXYETHYLENE ETHER OF A HEXITAN PARTIAL ESTER OF AN ORGANIC CARBOXYLIC ACID HAVING 12-22 CARBON ATOMS AND SELECTED FROM THE GROUP CONSISTING OF FATTY, NAPHTHENIC AND RESIN ACIDS, SAID ETHER CONTAINING 4-30 OXYETHYLENE GROUPS PER ACID RADICAL.
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) | 1961-05-26 | 1961-11-25 | 1962-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-26 | 1965-11-25 | 1966-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-26 | 1969-11-25 | 1970-05-27 | $7700.00 | Window Closed / Lapsed |