Patent US2668757A successfully refreshed from Google Patents.
US2668757A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing nonaqueous carbon dispersions
Assignee: EIDP Inc
•
Filing: 1949-08-31
•
Granted: 1954-02-09
•
Expires: 1969-08-31
Abstract
No abstract record available.
Inventors
- 👤 Virgil L Hansley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:09
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/32; C10L1/322
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
A METHOD OF FORMING A FLUID, NON-AQUEOUS COMPOSITION COMPRISING A DISPERSION OF CARBON PARTICLES RANGING IN SIZE FROM 1 TO 200 MICRONS IN AN ORGNIC DISPERSING LIQUID, SAID COMPOSITION CONTAINING 1 TO 60% BY WEIGHT OF DISPERSED CARBON PARTICLES, WHICH METHOD COMPRISES REACTING IN AN AGITATED BODY OF SAID LIQUID A HIGHER FATTY ACID WITH AN ALKALI METAL WHEREBY AN ALKALI METAL SOAP OF SAID HIGHER FATTY ACID IS FORMED IN AND UNIFORMLY DISTRIBUTED THROUGHOUT SAID LIQUID LIQUID IN AN AMOUNT CORRESPONDING TO 0.05 TO 5% OF THE TOTAL WEIGHT OF THE FINAL MIXTURE, AND AGITATING A MIXTURE OF SAID CARBON PARTICLES AND SAID LIQUID CONTAINING SAID SOAP, SAID LIQUID BEING INERT TOWARDS SAID CARBON, SAID SOAP AND SAID SOAPFORMING REACTANTS.
Claim 2
Independent Claim
121 words
A METHOD OF FORMING A FLUID, NON-AQUEOUS COMPOSITION COMPRISING A DISPERSION OF CARBON PARTICLES RANGING IN SIZE FROM 1 TO 200 MICRONS IN AN ORGNIC DISPERSING LIQUID, SAID COMPOSITION CONTAINING 1 TO 60% BY WEIGHT OF DISPERSED CARBON PARTICLES, WHICH METHOD COMPRISES REACTING IN AN AGITATED BODY OF SAID LIQUID A HIGHER FATTY ACID WITH AN ALKALI METAL WHEREBY AN ALKALI METAL SOAP OF SAID HIGHER FATTY ACID IS FORMED IN AND UNIFORMLY DISTRIBUTED THROUGHOUT SAID LIQUID LIQUID IN AN AMOUNT CORRESPONDING TO 0.05 TO 5% OF THE TOTAL WEIGHT OF THE FINAL MIXTURE, AND AGITATING A MIXTURE OF SAID CARBON PARTICLES AND SAID LIQUID CONTAINING SAID SOAP, SAID LIQUID BEING INERT TOWARDS SAID CARBON, SAID SOAP AND SAID SOAPFORMING REACTANTS.
References Cited (Backward Citations)
US614734A
Cited
GB165425A
Cited
GB163032A
Cited
US2021143A
Cited
GB535293A
Cited
US2394608A
Cited
US2487333A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-08 | 1957-08-10 | 1958-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-08 | 1961-08-10 | 1962-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-08 | 1965-08-10 | 1966-02-09 | $7700.00 | Window Closed / Lapsed |