US2640862A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Battery pigment
Assignee: Eagle Picher Co
•
Filing: 1949-08-10
•
Granted: 1953-06-02
•
Expires: 1969-08-10
Abstract
No abstract record available.
Inventors
- 👤 Melvin F Chubb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:24
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/36; H01M4/48; H01M4/56; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
40 words
A LEAD PIGMENT SUITABLE FOR USE IN A STORAGE BATTERY OF THE LEAD-ACID TYPE, SAID PIGMENT COMPRISING SUBSTANTIALLY .04 PER CENT BY WEIGHT BY WEIGHT OF VISCOSE RAYON FIBERS OR SUBSTANTIALY 1.5 DENIER, HAVING A LENGTH OF SUBSTANTIALLY 1/2 INCH.
Claim 2
Dependent Claim
40 words
A LEAD PIGMENT SUITABLE FOR USE IN A STORAGE BATTERY OF THE LEAD-ACID TYPE, SAID PIGMENT COMPRISING SUBSTANTIALLY .04 PER CENT BY WEIGHT BY WEIGHT OF VISCOSE RAYON FIBERS OR SUBSTANTIALY 1.5 DENIER, HAVING A LENGTH OF SUBSTANTIALLY 1/2 INCH.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-01 | 1956-12-01 | 1957-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-01 | 1960-12-01 | 1961-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-01 | 1964-12-01 | 1965-06-02 | $7700.00 | Window Closed / Lapsed |