US3012928A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low resistance conductive paper and method of making the same
Assignee: Riegel Paper Corp
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Filing: 1958-02-19
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Granted: 1961-12-12
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Expires: 1978-02-19
Abstract
No abstract record available.
Inventors
- 👤 Robert M Whitman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:03
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/63; D21H17/67
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
68 words
THE METHOD OF MAKING LOW RESISTANCE, CONDUCTIVE PAPER WHICH COMPRISES PREPARING A FURNISH OF FIBERS AND CARBON, THE AMOUNT OF CARBON BEING NOT SUBSTANTIALLY IN EXCESS OF 25% BY WEIGHT OF THE DRY WEIGHT OF THE FIBERS, FORMING FROM THE FURNISH A BASE WEB OF PAPER COMPRISING FELTED FIBERS AND CARBON, AND SUBSEQUENTLY ADDING TO SAID BASE WEB SUFFICIENT ADDITIONAL CARBON TO REDUCE THE RESISTANCE OF THE PAPER.
Claim 2
Independent Claim
68 words
THE METHOD OF MAKING LOW RESISTANCE, CONDUCTIVE PAPER WHICH COMPRISES PREPARING A FURNISH OF FIBERS AND CARBON, THE AMOUNT OF CARBON BEING NOT SUBSTANTIALLY IN EXCESS OF 25% BY WEIGHT OF THE DRY WEIGHT OF THE FIBERS, FORMING FROM THE FURNISH A BASE WEB OF PAPER COMPRISING FELTED FIBERS AND CARBON, AND SUBSEQUENTLY ADDING TO SAID BASE WEB SUFFICIENT ADDITIONAL CARBON TO REDUCE THE RESISTANCE OF THE PAPER.
Claim 3
Dependent Claim
30 words
THE METHOD OF CLAIM 1, IN WHICH THE BASE WEB IS AT LEAST PARTIALLY DRIED IN THE PERIOD FOLLOWING FORMATION OF THE BASE WEB AND THE ADDING OF ADDITIONAL CARBON.
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) | 1964-12-11 | 1965-06-12 | 1965-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-11 | 1969-06-12 | 1969-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-11 | 1973-06-12 | 1973-12-12 | $7700.00 | Window Closed / Lapsed |