US3653501A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Package of moisture-sensitive metal plates
Assignee: Dow Chemical Co
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Filing: 1970-08-20
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Granted: 1972-04-04
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Expires: 1990-08-20
Abstract
Abstract Described herein is a package of moisture-sensitive metal plates such as are used in photoengraving work. The plates have sheets of neutral interleaving material between them. The package is held together by a polymeric film barrier positioned along the edges of the superposed plates thereby to encompass all the edges. The film also serves as a moisture barrier protecting the interior surfaces of the plates from the atmosphere. The package permits moisture-sensitive plates to be shipped or stored without streaking, discoloration or other damage from ''''water-marking.
Inventors
- 👤 Charles A Sauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:00
CPC Classifications
B; B65; B65D; B65D85/00; B65D85/62; B65D57/00; B65D57/002; B65D57/003; B65D57/004
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
49 words
A package as in claim 1 wherein each plate has a moisture-sensitive surface and a reverse surface coated with a protective coating, said plates disposed with the moisture-sensitive surfaces in face to face relationship with one another, with at least one sheet of material interleaved between said moisture-sensitive surfaces.
Claim 2
Dependent Claim
16 words
A package as in claim 1 wherein the plastic sheeting is fitted with a tear strip.
Claim 3
Dependent Claim
14 words
A package as in claim 1 wherein the plates are presensitized magnesium photoengraving plates.
Claim 4
Dependent Claim
13 words
A package as in claim 1 wherein the plates are pre-sensitized aluminum plates.
Claim 5
Dependent Claim
13 words
A package as in claim 1 wherein the plates are pre-sensitized zinc plates.
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) | 1975-04-04 | 1975-10-04 | 1976-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-04 | 1979-10-04 | 1980-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-04 | 1983-10-04 | 1984-04-04 | $7700.00 | Window Closed / Lapsed |