US3215707A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricant
Assignee: Lubrizol Corp
•
Filing: 1964-03-31
•
Granted: 1965-11-02
•
Expires: 1984-03-31
Abstract
No abstract record available.
Inventors
- 👤 Rudolph J Rense
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:03
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/46; C07; C07C; C07C57/00; C07C57/02; C07C57/13; C08F8/18; C08F8/20; C08F8/30; C08F8/32; C10; C10M; C10M129/00; C10M129/86; C10M129/92; C10M129/93; C10M133/00; C10M133/52; C10M133/56; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/10; C10M2207/12; C10M2207/121; C10M2207/123; C10M2207/129; C10M2207/22; C10M2207/28; C10M2207/282; C10M2207/34; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/086; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/08; C10M2215/082; C10M2215/086; C10M2215/24; C10M2215/26; C10M2215/28; C10M2217/00; C10M2217/04; C10M2217/042; C10M2217/043; C10M2217/044; C10M2217/045; C10M2217/046; C10M2217/06; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/042; C10M2223/045; C10M2229/00; C10M2229/04; C10M2229/041; C10N; C10N2010/00; C10N2010/04; C10N2030/00; C10N2030/12; C10N2040/00; C10N2040/20; C10N2040/22; C10N2040/25; C10N2040/251; C10N2040/255; C10N2040/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
A PROCESS FOR PREPARING ACYLATED POLYAMINES COMPRISING PREPARING A MIXTURE OF AN ALIPHATIC POLYMER OF A LOWER MONO-OLEFIN AND MALEIC ANHYDRIDE: CONTACTING SAID MIXTURE AT A TEMPERATURE ABOVE ABOUT 140*C. AND BELOW THE DECOMPOSITION POINT OF SAID MIXTURE WITH ABOUT ONE MOLE OF CHLORINE FOR EACH MOLE OF MALEIC ANHYDRIDE TO FORM A SUBSTITUTED SUCCINIC ANHYDRIDE; MIXING SAID SUBSTITUTED SUCCINIC ANHYDRIDE WITH AT LEAST ABOUT ONE-HALF AN EQUIVALENT OF AN ETHYLENE POLYAMINE HAVING THE STRUCTURE
Claim 2
Dependent Claim
75 words
A PROCESS FOR PREPARING ACYLATED POLYAMINES COMPRISING PREPARING A MIXTURE OF AN ALIPHATIC POLYMER OF A LOWER MONO-OLEFIN AND MALEIC ANHYDRIDE: CONTACTING SAID MIXTURE AT A TEMPERATURE ABOVE ABOUT 140*C. AND BELOW THE DECOMPOSITION POINT OF SAID MIXTURE WITH ABOUT ONE MOLE OF CHLORINE FOR EACH MOLE OF MALEIC ANHYDRIDE TO FORM A SUBSTITUTED SUCCINIC ANHYDRIDE; MIXING SAID SUBSTITUTED SUCCINIC ANHYDRIDE WITH AT LEAST ABOUT ONE-HALF AN EQUIVALENT OF AN ETHYLENE POLYAMINE HAVING THE STRUCTURE
References Cited (Backward Citations)
US2490744A
Cited
US2604451A
Cited
GB922831A
Cited
FR1265086A
Cited
US3018250A
Cited
FR1254094A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-01 | 1969-05-03 | 1969-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-01 | 1973-05-03 | 1973-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-01 | 1977-05-03 | 1977-11-02 | $7700.00 | Window Closed / Lapsed |