Patent US3219657A successfully refreshed from Google Patents.
US3219657A
Expired / Lapsed
US
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Saccharide polydicarboxylate half-esters
Assignee: Monsanto Co
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Filing: 1961-02-27
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Granted: 1965-11-23
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Expires: 1981-02-27
Abstract
No abstract record available.
Inventors
- 👤 Van R Gaertner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:49
CPC Classifications
C; C07; C07H; C07H13/00; C07H13/02; C07H13/04; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10M; C10M1/00; C10M1/08; C10L1/18; C10L1/19; C10L1/191; C10L1/22; C10L1/222; C10L1/2222; C10L1/232; C10M2207/00; C10M2207/28; C10M2207/287; C10M2209/00; C10M2209/12; C10M2211/00; C10M2211/02; C10M2211/04; C10M2211/044; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/24; C10M2215/26; C10M2227/00; C10M2227/08; C10M2227/082; C10N; C10N2040/00; C10N2040/04; C10N2040/042; C10N2040/044; C10N2040/046; C10N2040/25; C10N2040/251; C10N2040/255; C10N2040/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
36 words
AS COMPOUND, POLY-O-(B-CARBOXYACYL) SUGARS IN WHICH THE SUGAR CONTAINS NO MORE THAN TWO MONOSACCHARIDE UNITS AND AT LEAST ONE O-(B-CARBOXYACYL) GROUP FOR EACH MONOSACCHARIDE UNIT AND THE CARBOXYACYL GROUP CONTAINS FROM 10 TO 24 CARBON ATOMS.
Claim 2
Dependent Claim
36 words
AS COMPOUND, POLY-O-(B-CARBOXYACYL) SUGARS IN WHICH THE SUGAR CONTAINS NO MORE THAN TWO MONOSACCHARIDE UNITS AND AT LEAST ONE O-(B-CARBOXYACYL) GROUP FOR EACH MONOSACCHARIDE UNIT AND THE CARBOXYACYL GROUP CONTAINS FROM 10 TO 24 CARBON ATOMS.
References Cited (Backward Citations)
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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) | 1968-11-22 | 1969-05-24 | 1969-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-22 | 1973-05-24 | 1973-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-22 | 1977-05-24 | 1977-11-23 | $7700.00 | Window Closed / Lapsed |