US2590910A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rosin acid esters
Assignee: General Mills Inc
•
Filing: 1947-05-08
•
Granted: 1952-04-01
•
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
2026-10-25 21:01
CPC Classifications
C; C09; C09F; C09F1/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
A ROSIN ACID ESTER OF A POLYHYDRIC ALCOHOL DERIVED FROM THE REACTION OF PENTAERYTHRITOL AND GLYCEROL MONOCHLORHYDRIN IN AN ALKALINE REACTION MIXTURE AT AN ELEVATED TEMPERATURE IN WHICH THE GLYCEROL MONOCHLORHYDRIN IS EMPLOYED IN FROM 1 TO 10 MOLES PER MOLES OF PENTAERYTHRITOL, THE HYDROXYL GROUPS OF SAID POLYHYDRIC ALCOHOL BEING SUBSTANTIALLY ALL ESTERIFIED WITH ROSIN ACID.
Claim 2
Dependent Claim
57 words
A ROSIN ACID ESTER OF A POLYHYDRIC ALCOHOL DERIVED FROM THE REACTION OF PENTAERYTHRITOL AND GLYCEROL MONOCHLORHYDRIN IN AN ALKALINE REACTION MIXTURE AT AN ELEVATED TEMPERATURE IN WHICH THE GLYCEROL MONOCHLORHYDRIN IS EMPLOYED IN FROM 1 TO 10 MOLES PER MOLES OF PENTAERYTHRITOL, THE HYDROXYL GROUPS OF SAID POLYHYDRIC ALCOHOL BEING SUBSTANTIALLY ALL ESTERIFIED WITH ROSIN ACID.
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) | 1955-04-01 | 1955-10-01 | 1956-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-01 | 1959-10-01 | 1960-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-01 | 1963-10-01 | 1964-04-01 | $7700.00 | Window Closed / Lapsed |