US3900319A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrostatographic copy paper containing glycidyl quaternary ammonium compounds
Assignee: Individual
•
Filing: 1973-12-26
•
Granted: 1975-08-19
•
Expires: 1993-12-26
Abstract
Abstract An improved electroconductive coating is made by incorporating in its formulation both an organic film-forming polymer and certain low molecular weight monomeric quaternary ammonium compounds. An improved electrostatographic copy sheet is made by combining a conductive layer comprising said improved electroconductive coating and a dielectric or photoconductive printing layer.
Inventors
- 👤 Lewis S Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:50
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/10; G03G5/101
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
35 words
AN ELECTROCONDUCTIVE PAPER USEFUL AS A BASE FOR PRODUCING ELECTROSTATOGRAPHIC COPY PAPER COMPRISING A PAPER SHEET COATED WITH AN ELECTROCONDUCTIVE LAYER COMPRISING AN ORGANIC, FILM-FORMING POLYMER AND A MONOMERIC QUATERNARY AMMONIUM COMPOUND OF THE FORMULA:
Claim 2
Dependent Claim
35 words
AN ELECTROCONDUCTIVE PAPER USEFUL AS A BASE FOR PRODUCING ELECTROSTATOGRAPHIC COPY PAPER COMPRISING A PAPER SHEET COATED WITH AN ELECTROCONDUCTIVE LAYER COMPRISING AN ORGANIC, FILM-FORMING POLYMER AND A MONOMERIC QUATERNARY AMMONIUM COMPOUND OF THE FORMULA:
Claim 3
Dependent Claim
21 words
The paper of claim 1 wherein said ammonium compound comprises from 5 to 95 percent by weight of said electroconductive layer.
Claim 4
Dependent Claim
21 words
The paper of claim 1 wherein said ammonium compound comprises from 20 to 50 percent by weight of said electroconductive layer.
Claim 5
Dependent Claim
54 words
In an electrostatographic copy paper, including a printing layer having a surface capable of receiving and retaining an electrostatic charge, the improvement comprising an electroconductive layer underlying said printing layer and comprising an organic, film-forming polymer and a monomeric quaternary ammonium compound of the formula: (RA1 - N - R(4-A)11) B wherein R1 is
Claim 6
Dependent Claim
54 words
In an electrostatographic copy paper, including a printing layer having a surface capable of receiving and retaining an electrostatic charge, the improvement comprising an electroconductive layer underlying said printing layer and comprising an organic, film-forming polymer and a monomeric quaternary ammonium compound of the formula: (RA1 - N - R(4-A)11) B wherein R1 is
Claim 7
Dependent Claim
23 words
The copy paper of claim 4 wherein said printing layer comprises a substance selected from the group consisting of dielectric and photoconductive substances.
Claim 8
Dependent Claim
16 words
The copy paper of claim 4 wherein said printing layer is comprised of photoconductive zinc oxide.
Claim 9
Dependent Claim
21 words
The paper of claim 4 wherein said ammonium compound comprises from 5 to 95 percent by weight of said electroconductive layer.
Claim 10
Dependent Claim
21 words
The paper of claim 4 wherein said ammonium compound comprises from 20 to 50 percent by weight of said electroconductive layer.
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) | 1978-08-18 | 1979-02-17 | 1979-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-18 | 1983-02-17 | 1983-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-18 | 1987-02-17 | 1987-08-19 | $7700.00 | Window Closed / Lapsed |