US2889306A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized straight chain hydrocarbons
Assignee: AT&T Inc
•
Filing: 1957-07-15
•
Granted: 1959-06-02
•
Expires: 1977-07-15
Abstract
No abstract record available.
Inventors
- 👤 Walter L Hawkins
- 👤 Vincent L Lanza
- 👤 Fleid H Winslow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:55
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/02; C08K3/04; C08K5/00; C08K5/36; C08K5/39; C08K5/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
A COMPOSITION WHICH IS STABILIZED AGAINST OXIDATION COMPRISING FROM 0.5 PERCENT TO 5 PERCENT BY WEIGHT OG CARBON BLACK PARTICLES OF A MAXIMUM SIZE OF 1000 ANGSTROMS, FROM 0.1 PERCENT TO 5 PERCENT BY WEIGHT OF A COMPOUND OF THE STRUCTURE
Claim 2
Dependent Claim
41 words
A COMPOSITION WHICH IS STABILIZED AGAINST OXIDATION COMPRISING FROM 0.5 PERCENT TO 5 PERCENT BY WEIGHT OG CARBON BLACK PARTICLES OF A MAXIMUM SIZE OF 1000 ANGSTROMS, FROM 0.1 PERCENT TO 5 PERCENT BY WEIGHT OF A COMPOUND OF THE STRUCTURE
References Cited (Backward Citations)
US2387518A
Cited
US2582510A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-06-01 | 1962-12-01 | 1963-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-01 | 1966-12-01 | 1967-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-01 | 1970-12-01 | 1971-06-02 | $7700.00 | Window Closed / Lapsed |