US2569495A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthetic hard resins prepared from alpha, beta-unsaturated polycarboxylic acids
Assignee: Hercules Powder Co
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Filing: 1950-09-09
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Granted: 1951-10-02
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Expires: 1970-09-09
Abstract
No abstract record available.
Inventors
- 👤 Alfred E Rheineck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:15
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/52; C09; C09F; C09F1/00; C09F1/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
AN HARD RESIN SUITABLE FOR COOKING WITH SOYBEAN AND SIMILAR OILS TO PROVIDE AN OLEORESINOUS VANISH WHICH COMPRISES A RESINOUS ESTER OF A PENTAERYTHRITOL AND AN ADDUCT OF A ROSIN ACID MATERIAL AND AN ALIPHATIC A,B-ETHYLENICALLY UNSATURATED POLYCARBOXYLIC ACID, SAID ESTER CONTAINING FROM 0.46 TO 0.86 MOL OF SAID A,B-UNSATURATED POLYCARBOXYLIC ACID IN REACTED FORM PER MOL OF ROSIN ACID, SAID ESTER CONTAINING A PENTAERYTHRITOL IN REACTED FORM IN AN AMOUNT WHICH IS SUBSTANTIALLY THE CHEMICAL EQUIVALENT OF ALL OF THE ACID CONSTITUENTS OF THE ESTER, SAID ESTER HAVING AN ACID NUMBER WHICH IS LOW ENOUGH TO PROVIDE AN ESTER OF SUBSTANTIAL CLARITY BUT WHICH AT THE SAME TIME IS NOT BELOW LINE AB OF FIGURE 2.
Claim 2
Dependent Claim
117 words
AN HARD RESIN SUITABLE FOR COOKING WITH SOYBEAN AND SIMILAR OILS TO PROVIDE AN OLEORESINOUS VANISH WHICH COMPRISES A RESINOUS ESTER OF A PENTAERYTHRITOL AND AN ADDUCT OF A ROSIN ACID MATERIAL AND AN ALIPHATIC A,B-ETHYLENICALLY UNSATURATED POLYCARBOXYLIC ACID, SAID ESTER CONTAINING FROM 0.46 TO 0.86 MOL OF SAID A,B-UNSATURATED POLYCARBOXYLIC ACID IN REACTED FORM PER MOL OF ROSIN ACID, SAID ESTER CONTAINING A PENTAERYTHRITOL IN REACTED FORM IN AN AMOUNT WHICH IS SUBSTANTIALLY THE CHEMICAL EQUIVALENT OF ALL OF THE ACID CONSTITUENTS OF THE ESTER, SAID ESTER HAVING AN ACID NUMBER WHICH IS LOW ENOUGH TO PROVIDE AN ESTER OF SUBSTANTIAL CLARITY BUT WHICH AT THE SAME TIME IS NOT BELOW LINE AB OF FIGURE 2.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-01 | 1955-04-02 | 1955-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-01 | 1959-04-02 | 1959-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-01 | 1963-04-02 | 1963-10-02 | $7700.00 | Window Closed / Lapsed |