Patent US3949778A successfully refreshed from Google Patents.
Patent US3075859A successfully refreshed from Google Patents.
US3075859A
Expired / Lapsed
US
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Copy sheet for electrostatic printing
Assignee: AB Dick Co
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Filing: 1959-02-20
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Granted: 1963-01-29
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Expires: 1979-02-20
Abstract
No abstract record available.
Inventors
- 👤 Earl B Relph
- 👤 Henry A Dahl
- 👤 Christiansen Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:14
CPC Classifications
H; H01; H01J; H01J31/00; H01J31/02; H01J31/06; H01J31/065; G; G03; G03G; G03G5/00; G03G5/02; G03G5/0202; G03G5/0205; G03G5/0217; G03G5/10; G03G5/101; G03G5/104; Y; Y10; Y10S; Y10S101/00; Y10S101/37; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/3188; Y10T428/31895
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
A COPY SHEET FOR USE IN RECEIVING AN ELECTROSTATIC LATENT IMAGE COMPRISING THE COMBINATION OF A PAPER BASE SHEET, A CONTINUOUS DIELECTRIC, INSULATING COATING ON THE PAPER BASE SHEET, A HUMECTANT UNIFORMLY DISTRIBUTED THROUGHOUT THE PAPER BASE SHEET PRESENT IN AN AMOUNT WITHIN THE RANGE OF 0.10% TO 10.0% BY WEIGHT OF THE PAPER BASE SHEET, AND A WATER-SOLUBLE, WATER-STABLE, IONIZABLE METAL SALT UNIFORMILY DISTRIBUTED THROUGHOUT IN AN AMOUNT WITHIN THE RANGE OF 0.05% TO 10.0% BY WEIGHT OF THE PAPER BASE SHEET, SAID PERCENTAGES BEING BASED UPON THE WEIGHT OF THE PAPER BASE SHEET.
Claim 2
Dependent Claim
95 words
A COPY SHEET FOR USE IN RECEIVING AN ELECTROSTATIC LATENT IMAGE COMPRISING THE COMBINATION OF A PAPER BASE SHEET, A CONTINUOUS DIELECTRIC, INSULATING COATING ON THE PAPER BASE SHEET, A HUMECTANT UNIFORMLY DISTRIBUTED THROUGHOUT THE PAPER BASE SHEET PRESENT IN AN AMOUNT WITHIN THE RANGE OF 0.10% TO 10.0% BY WEIGHT OF THE PAPER BASE SHEET, AND A WATER-SOLUBLE, WATER-STABLE, IONIZABLE METAL SALT UNIFORMILY DISTRIBUTED THROUGHOUT IN AN AMOUNT WITHIN THE RANGE OF 0.05% TO 10.0% BY WEIGHT OF THE PAPER BASE SHEET, SAID PERCENTAGES BEING BASED UPON THE WEIGHT OF THE PAPER BASE SHEET.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-28 | 1966-07-30 | 1967-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-28 | 1970-07-30 | 1971-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-28 | 1974-07-30 | 1975-01-29 | $7700.00 | Window Closed / Lapsed |