Patent US3557696A successfully refreshed from Google Patents.
US3557696A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Planographic printing plate with nucleating agent and zirconium salt
Assignee: AB Dick Co
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Filing: 1966-07-13
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Granted: 1971-01-26
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Expires: 1986-07-13
Abstract
Abstract A planographic printing plate having a water receptive, hydrophilic, lithographic surface, said surface having a combination of silver halide nucleating agents and a salt of zirconium, thorium or titanium.
Inventors
- 👤 Stasel Keith Hoover
- 👤 James Thomas Crawford Knowles
- 👤 Wong Kwong Fa Wong Yan Man
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:52
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/06; G03F7/07
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
37 words
A plate as claimed in claim 1 in which the combination on the lithographic surface contains 10-60 percent by weight of a water soluble compatible stabilizing agent to inhibit degradation of said nucleating agent and said salt.
Claim 2
Dependent Claim
18 words
A plate as claimed in claim 2 in which the stabilizing agent is a compatible water-soluble phenolic compound.
Claim 3
Dependent Claim
38 words
A plate as claimed in claim 1 having a paper base, said base having a coating of an organic binder and a filler on the surface thereof and having a dry Dennison wax pick of at least six.
Claim 4
Dependent Claim
23 words
A plate as claimed in claim 1 wherein said lithographic surface is in the form of a coating containing a binder of casein.
Claim 5
Dependent Claim
19 words
A plate as claimed in claim 1 wherein said metal salt is zirconyl acetate, zirconyl nitrate or zirconyl chloride.
Claim 6
Dependent Claim
15 words
A plate as claimed in claim 1 wherein the nucleating agent is a stannous halide.
Claim 7
Dependent Claim
25 words
A plate as claimed in claim 1 wherein the nucleating agent and zirconium salt are present in separate coatings on the surface of the plate.
References Cited (Backward Citations)
BE565696A
Cited
US3220837A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |