US3404019A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coke ground in a nonoxidizing atmosphere
Assignee: Marathon Oil Co
•
Filing: 1965-03-04
•
Granted: 1968-10-01
•
Expires: 1985-03-04
Abstract
No abstract record available.
Inventors
- 👤 William W Gotshall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:33
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/56; C01; C01B; C01B32/00; C08; C08K; C08K3/00; C08K3/02; C08K3/04; C01P; C01P2004/00; C01P2004/60; C01P2004/62; C01P2006/00; C01P2006/10
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
44 words
A NON-STAINING FINELY DIVIDED CARBON SUITABLE FOR COMPOUNDING WITH POLYMERIC MATERIALS TO FORM HIGH STRENGTH, HIGH MODULUS COMPOSITIONS, COMPRISING COMMINUTED COKE HAVING AN AVERAGE PARTICLE SIZE OF NOT OVER 2.5 MICRONS, THE COKE HAVING BEEN GROUND TO SAID PARTICLE SIZE IN A NON-OXIDIZING ATMOSPHERE.
Claim 2
Dependent Claim
44 words
A NON-STAINING FINELY DIVIDED CARBON SUITABLE FOR COMPOUNDING WITH POLYMERIC MATERIALS TO FORM HIGH STRENGTH, HIGH MODULUS COMPOSITIONS, COMPRISING COMMINUTED COKE HAVING AN AVERAGE PARTICLE SIZE OF NOT OVER 2.5 MICRONS, THE COKE HAVING BEEN GROUND TO SAID PARTICLE SIZE IN A NON-OXIDIZING ATMOSPHERE.
Claim 3
Dependent Claim
22 words
THE FINELY DIVIDED CARBON OF CLAIM 1 WHEREIN THE PARTICLES HAVE A COATING OF A NON-DELETERIOUS BARRIER TO PREVENT CONTACT WITH OXYGEN.
References Cited (Backward Citations)
USRE21302E
Cited
US2735624A
Cited
US1946053A
Cited
US2635057A
Cited
US2721168A
Cited
US3020210A
Cited
US2908634A
Cited
US3264240A
Cited
US3329646A
Cited
US3284334A
Cited
US3301694A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-01 | 1972-04-01 | 1972-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-01 | 1976-04-01 | 1976-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-01 | 1980-04-01 | 1980-10-01 | $7700.00 | Window Closed / Lapsed |