Patent US3231587A successfully refreshed from Google Patents.
US3231587A
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Process for the preparation of substituted succinic acid compounds
Assignee: Lubrizol Corp
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Filing: 1960-06-07
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Granted: 1966-01-25
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Expires: 1980-06-07
Abstract
No abstract record available.
Inventors
- 👤 Rudolph J Rense
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 01:05
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/54; C07C51/567; C07C57/00; C07C57/02; C07C57/13; C08; C08F; C08F8/00; C08F8/18; C08F8/20; C08F8/46; 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; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
A PROCESS FOR PREPARING HYDROCARBON SUBSTITUTED SUCCINIC ANYDRIDES WHICH COMPRISES PREPARING A MIXTURE OF A SUBSTANTIALLY ALIPHATIC POLYMER OF A LOWER MONOOLEFIN AND MALEIC ANHYDRIDE, AND CONTACTING SAID MIXTURE AT A TEMPERATURE ABOVE ABOUT 140*C. WITH ABOUT ONE MOLE OF CHLORINE FOR EACH MOLE OF MALEIC ANHYDRIDE.
Claim 2
Dependent Claim
47 words
A PROCESS FOR PREPARING HYDROCARBON SUBSTITUTED SUCCINIC ANYDRIDES WHICH COMPRISES PREPARING A MIXTURE OF A SUBSTANTIALLY ALIPHATIC POLYMER OF A LOWER MONOOLEFIN AND MALEIC ANHYDRIDE, AND CONTACTING SAID MIXTURE AT A TEMPERATURE ABOVE ABOUT 140*C. WITH ABOUT ONE MOLE OF CHLORINE FOR EACH MOLE OF MALEIC ANHYDRIDE.
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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) | 1969-01-24 | 1969-07-26 | 1970-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-24 | 1973-07-26 | 1974-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-24 | 1977-07-26 | 1978-01-25 | $7700.00 | Window Closed / Lapsed |