Patent US2572086A successfully refreshed from Google Patents.
US2572086A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rosin acid esters
Assignee: General Mills Inc
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Filing: 1947-05-08
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Granted: 1951-10-23
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Expires: 1967-05-08
Abstract
No abstract record available.
Inventors
- 👤 Wittcoff Harold
- 👤 Roach John Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:51
CPC Classifications
C; C09; C09F; C09F1/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A ROSIN ACID ESTER OF A NON-DISTILLABLE CROSSLINKED POLYMERIC POLYHYDRIC ALCOHOL, SAID POLYHYDRIC ALCOHOL RESULTING FROM THE SUBSTANTIALLY COMPLETE CONDENSATION UNDER AKALINE CONDITIONS OF GLYCEROL DICHLORHYDRIN WITH A POLYHYDROXY COMPOUMD CONDENSATION FROM THE GROUP CONSISTING OF PENTAERYTHRITOL AND GLYCEROL, THE GLYCEROL DICHLORHYDRIN BEING EMPLOYED IN THE RELATIVE PROPORTION OF NOT SUBSTANTIALLY IN EXCESS OF TWO MOLES PER MOLE OF THE POLYHYDROXY COMPOUND, AND NOT SUBSTANTIALLY LESS THAN ABOUT ONE-HALF MOLE PER MOLE OF THE POLYHYDROXY COMPOUND, SAID POLYHYDRIC ALCOHOL BEING SUBSTANTIALLY COMPLETELY ESTERIFIED.
Claim 2
Dependent Claim
83 words
A ROSIN ACID ESTER OF A NON-DISTILLABLE CROSSLINKED POLYMERIC POLYHYDRIC ALCOHOL, SAID POLYHYDRIC ALCOHOL RESULTING FROM THE SUBSTANTIALLY COMPLETE CONDENSATION UNDER AKALINE CONDITIONS OF GLYCEROL DICHLORHYDRIN WITH A POLYHYDROXY COMPOUMD CONDENSATION FROM THE GROUP CONSISTING OF PENTAERYTHRITOL AND GLYCEROL, THE GLYCEROL DICHLORHYDRIN BEING EMPLOYED IN THE RELATIVE PROPORTION OF NOT SUBSTANTIALLY IN EXCESS OF TWO MOLES PER MOLE OF THE POLYHYDROXY COMPOUND, AND NOT SUBSTANTIALLY LESS THAN ABOUT ONE-HALF MOLE PER MOLE OF THE POLYHYDROXY COMPOUND, SAID POLYHYDRIC ALCOHOL BEING SUBSTANTIALLY COMPLETELY ESTERIFIED.
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) | 1954-10-22 | 1955-04-23 | 1955-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-22 | 1959-04-23 | 1959-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-22 | 1963-04-23 | 1963-10-23 | $7700.00 | Window Closed / Lapsed |