Patent US3665115A successfully refreshed from Google Patents.
Patent US3573122A successfully refreshed from Google Patents.
US3573122A
Expired / Lapsed
US
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Preparation of conductive materials
Assignee: Dow Chemical Co
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Filing: 1968-08-23
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Granted: 1971-03-30
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Expires: 1988-08-23
Abstract
Abstract THIS INVENTION PROVIDES A METHOD FOR RENDERING CONDUCTIVE MATERIALS WHICH ARE NORMALLY SUBSTANTIALLY NONCONDUCTIVE BY ADMIXING WITH THE NON-CONDUCTIVE MATERIAL SUFFICIENT VERMICULAR EXPANDED GRAPHITE HAVING A BULK DENSITY OF LESS THAN ABOUT 2 LBS. PER CUBIC FOOT TO PROVIDE AN AMOUNT OF FROM 0.05 TO 40 PERCENT BY WEIGHT OF GRAPHITE BASED ON THE TOTAL WEIGHT OF THE MIXTURE. ONE OF THE ILLUSTRATED UTILITIES OF THIS INVENTION IS TO PROVIDE A HIGHLY CONDUCTIVE BATTERY CATHODE COMPOSITION.
Inventors
- 👤 Franciszek Olstowski
- 👤 James Lawrence Amos
- 👤 Herbert H Bauss
- 👤 Oliver Osborn
- 👤 John D Watson Sr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:07
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/04; H01M4/049; H01B; H01B1/00; H01B1/20; H01B1/24; H01M4/043; H01M4/0433; H01M4/0471; H01M4/62; H01M4/624; H01M4/625; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-29 | 1974-09-28 | 1975-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-29 | 1978-09-28 | 1979-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-29 | 1982-09-28 | 1983-03-30 | $7700.00 | Window Closed / Lapsed |