US3979212A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laminated lithographic printing plate
Assignee: Printing Developments Inc
•
Filing: 1974-10-04
•
Granted: 1976-09-07
•
Expires: 1994-10-04
Abstract
Abstract An inexpensive, strong, durable noncracking, high fidelity lithographic printing plate comprises a soft temper aluminum sheet laminated to a nonstainless steel sheet with an adhesive. If desired, the aluminum sheet can be plated with either copper or chromium and the copper in turn can be plated with chromium.
Inventors
- 👤 John E. Peters
- 👤 Vincent A. Pagliaro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:59
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/04; B32B15/043; B32B15/18; B32B15/20; B32B7/00; B32B7/04; B32B7/12; B41; B41N; B41N1/00; B41N1/04; B41N1/08; B41N1/083; B41N1/10; B32B2255/00; B32B2255/06; B32B2311/00; B32B2311/30
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
33 words
An inexpensive, strong, durable, noncracking, high fidelity lithographic printing plate which comprises a laminated base or substrate formed of a soft temper aluminum sheet laminated to a nonstainless steel sheet with an adhesive.
Claim 2
Dependent Claim
33 words
An inexpensive, strong, durable, noncracking, high fidelity lithographic printing plate which comprises a laminated base or substrate formed of a soft temper aluminum sheet laminated to a nonstainless steel sheet with an adhesive.
Claim 3
Dependent Claim
17 words
The lithographic printing plate as defined by claim 1 wherein the aluminum sheet is plated with copper.
Claim 4
Dependent Claim
17 words
The lithographic printing plate as defined by claim 1 wherein the aluminum sheet is plated with chromium.
Claim 5
Dependent Claim
17 words
The lithographic printing plate as defined by claim 2 wherein the copper plating is plated with chromium.
Claim 6
Dependent Claim
18 words
The lithographic printing plate as defined by claim 1 wherein the aluminum sheet has a photosensitive coating thereon.
Claim 7
Dependent Claim
19 words
The lithographic printing plate as defined by claim 2 wherein the copper plating has a photosensitive resist coating thereon.
Claim 8
Dependent Claim
18 words
The lithographic printing plate as defined by claim 3 wherein chromium plating has a photosensitive resist coating thereon.
Claim 9
Dependent Claim
19 words
The lithographic printing plate as defined by claim 4 wherein the chromium plating has a photosensitive resist coating thereon.
Claim 10
Dependent Claim
17 words
The lithographic printing plate as defined by claim 1 wherein the adhesive is a thermosetting polyester resin.
References Cited (Backward Citations)
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Cited
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Cited
GB936913A
Cited
US3556952A
Cited
US3577920A
Cited
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Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-09-07 | 1980-03-08 | 1980-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-07 | 1984-03-08 | 1984-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-07 | 1988-03-08 | 1988-09-07 | $7700.00 | Window Closed / Lapsed |