US3141745A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dehazing polymer-containing hydrocarbon oils
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1961-07-17
•
Granted: 1964-07-21
•
Expires: 1981-07-17
Abstract
No abstract record available.
Inventors
- 👤 Louis N Calvino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:13
CPC Classifications
C; C10; C10M; C10M159/00; C10M159/12; C10M159/20; C07; C07C; C07C29/00; C07C29/68; C07C29/685; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/143; C10L1/18; C10L1/192; C10L1/195; C10L1/196; C10L1/1966; C10L1/20; C10L1/206; C10L1/208; C10L1/22; C10L1/232; C10L1/234; C10L1/236; C10L1/2366; C10L1/2368; C10M2203/00; C10M2203/02; C10M2203/022; C10M2203/024; C10M2203/04; C10M2203/06; C10M2203/10; C10M2203/102; C10M2203/104; C10M2203/106; C10M2203/108; C10M2207/00; C10M2207/02; C10M2207/021; C10M2207/023; C10M2207/025; C10M2207/027; C10M2207/04; C10M2207/046; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/128; C10M2207/129; C10M2207/16; C10M2207/18; C10M2207/28; C10M2207/282; C10M2207/34; C10M2207/40; C10M2207/402; C10M2207/404; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/086; C10M2213/00; C10M2213/04; C10M2213/06; C10M2215/00; C10M2215/08; C10M2215/082; C10M2215/24; C10M2215/28; C10M2217/00; C10M2217/02; C10M2217/022; C10M2217/023; C10M2217/028; C10M2217/06; C10M2219/00; C10M2219/04; C10M2219/044; C10M2219/08; C10M2219/082; C10M2219/087; C10M2219/088; C10M2219/089; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/042; C10M2223/12; C10M2225/00; C10M2225/04; C10M2225/041; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2010/06; C10N2010/08; C10N2010/10; C10N2010/12; C10N2010/14; C10N2030/00; C10N2030/12; C10N2040/00; C10N2040/02; C10N2040/135; C10N2040/14; C10N2040/16; C10N2040/17; C10N2040/25; C10N2040/252; C10N2040/253; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A LIQUID HYDROCARBON OIL BOILING BETWEEN 75 AND 900*F. CONTAINING A SMALL AMOUNT SUFFICIENT TO STABILIZE SAID OIL OF AN OIL SOLUBLE, ASHLESS POLYMERIC ADDITIVE HAVING A MOLECULAR WEIGHT OF FROM 1,000 TO 100,000 WHICH UPON CONTACT WITH WATER PROMOTES THE FORMATION OF A PERSISTENT AQUEOUS HAZE CONDITION AND TO WHICH HAS BEEN ADDED A MINOR AMOUNT SUFFICIENT TO REDUCE THE HAZE CONDITION OF AN ALKYL PYRROLIDONE WHEREIN SAID ALKYL RADICAL CONTAINS FROM 1 TO 4 CARBON ATOMS.
Claim 2
Dependent Claim
78 words
A LIQUID HYDROCARBON OIL BOILING BETWEEN 75 AND 900*F. CONTAINING A SMALL AMOUNT SUFFICIENT TO STABILIZE SAID OIL OF AN OIL SOLUBLE, ASHLESS POLYMERIC ADDITIVE HAVING A MOLECULAR WEIGHT OF FROM 1,000 TO 100,000 WHICH UPON CONTACT WITH WATER PROMOTES THE FORMATION OF A PERSISTENT AQUEOUS HAZE CONDITION AND TO WHICH HAS BEEN ADDED A MINOR AMOUNT SUFFICIENT TO REDUCE THE HAZE CONDITION OF AN ALKYL PYRROLIDONE WHEREIN SAID ALKYL RADICAL CONTAINS FROM 1 TO 4 CARBON ATOMS.
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) | 1967-07-21 | 1968-01-20 | 1968-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-21 | 1972-01-20 | 1972-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-21 | 1976-01-20 | 1976-07-21 | $7700.00 | Window Closed / Lapsed |