US2996464A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thixotropic oil vehicle
Assignee: SPENCER KELLOGG AND SONS Inc
•
Filing: 1958-01-20
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Granted: 1961-08-15
•
Expires: 1978-01-20
Abstract
No abstract record available.
Inventors
- 👤 Herbert M Schroeder
- 👤 Joseph A Pawlak
- 👤 Donald J Waythomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:02
CPC Classifications
C; C09; C09F; C09F7/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
THE PROCESS OF PREPARING AN OIL VEHICLE POSSESSING THIXOTROPIC CHARACTERISTICS WHICH COMPRISES (A) REACTING BY HEATING BELOW ABOUT 320* F. AN ALIPHATIC DIAMINE SELECTED FROM THE CLASS CONSISTING OF ETHYLENE DIAMINE AND HEXAMETHYLENE DIAMINE WITH AN ESTER OF A DRYING OIL FATTY ACID AND A POLYOL HAVING AT LEAST THREE HYDROXYL GROUPS UNTIL A REACTION PRODUCT CONCENTRATE IS OBTAINED, THE AMOUNT OF SAID DIAMINE BEING FROM ABOUT 0.75% TO 15% BASED ON THE WEIGHT OF THE ESTER AND (B) THEN HEAT-BLENDING SAID REACTION PRODUCT CONCENTRATE WITH A DRYING OIL VEHICLE SELECTED FROM THE CLASS CONSISTING OF FAT DRYING OILS, FAT SEMIDRYING OILS, HEAT-BODIED FAT DRYING OILS, HEAT-BODIED FAT SEMIDRYING OILS AND COPOLYMERS OF ANY OF THE FORMER WITH AN AROMATIC VINYL MONOMER, THE AMOUNT OF REACTION PRODUCT CONCENTRATE SO HEAT-BLENDED BEING SUFFICIENT TO PRODUCE IN THE FINAL BLENDED OIL VEHICLE A DIAMINE EQUIVALENT OF 0.1% TO 1.5%.
Claim 2
Dependent Claim
147 words
THE PROCESS OF PREPARING AN OIL VEHICLE POSSESSING THIXOTROPIC CHARACTERISTICS WHICH COMPRISES (A) REACTING BY HEATING BELOW ABOUT 320* F. AN ALIPHATIC DIAMINE SELECTED FROM THE CLASS CONSISTING OF ETHYLENE DIAMINE AND HEXAMETHYLENE DIAMINE WITH AN ESTER OF A DRYING OIL FATTY ACID AND A POLYOL HAVING AT LEAST THREE HYDROXYL GROUPS UNTIL A REACTION PRODUCT CONCENTRATE IS OBTAINED, THE AMOUNT OF SAID DIAMINE BEING FROM ABOUT 0.75% TO 15% BASED ON THE WEIGHT OF THE ESTER AND (B) THEN HEAT-BLENDING SAID REACTION PRODUCT CONCENTRATE WITH A DRYING OIL VEHICLE SELECTED FROM THE CLASS CONSISTING OF FAT DRYING OILS, FAT SEMIDRYING OILS, HEAT-BODIED FAT DRYING OILS, HEAT-BODIED FAT SEMIDRYING OILS AND COPOLYMERS OF ANY OF THE FORMER WITH AN AROMATIC VINYL MONOMER, THE AMOUNT OF REACTION PRODUCT CONCENTRATE SO HEAT-BLENDED BEING SUFFICIENT TO PRODUCE IN THE FINAL BLENDED OIL VEHICLE A DIAMINE EQUIVALENT OF 0.1% TO 1.5%.
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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) | 1964-08-14 | 1965-02-13 | 1965-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-14 | 1969-02-13 | 1969-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-14 | 1973-02-13 | 1973-08-15 | $7700.00 | Window Closed / Lapsed |