Patent US2830536A successfully refreshed from Google Patents.
US2830536A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lithographic printing
Assignee: Harris Corp
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Filing: 1955-12-15
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Granted: 1958-04-15
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Expires: 1975-12-15
Abstract
No abstract record available.
Inventors
- 👤 William H Wood
- 👤 Dolor N Adams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 01:35
CPC Classifications
B; B41; B41N; B41N3/00; B41N3/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
IN A METHOD OF PREPARING A LITHOGRAPHIC PLATE FOR PRINTING, THE STEP WHICH CONSISTS IN APPLYING TO THE PRINTING SURFACE OF SUCH PLATE A SOLUTION CONSISTING ESSENTIALLY OF WATER AND A RELATIVELY SMALL PERCENT OF AN AGENT FROM THE CLASS CONSISTING OF WATER-SOLUBLE PER-HALOGENATED ALIPHATIC SATURATED FATTY ACIDS AND THEIR WATER-SOLUBLE SALTS AND HAVING AN ACID PH.
Claim 2
Dependent Claim
57 words
IN A METHOD OF PREPARING A LITHOGRAPHIC PLATE FOR PRINTING, THE STEP WHICH CONSISTS IN APPLYING TO THE PRINTING SURFACE OF SUCH PLATE A SOLUTION CONSISTING ESSENTIALLY OF WATER AND A RELATIVELY SMALL PERCENT OF AN AGENT FROM THE CLASS CONSISTING OF WATER-SOLUBLE PER-HALOGENATED ALIPHATIC SATURATED FATTY ACIDS AND THEIR WATER-SOLUBLE SALTS AND HAVING AN ACID PH.
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) | 1961-04-14 | 1961-10-14 | 1962-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-14 | 1965-10-14 | 1966-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-14 | 1969-10-14 | 1970-04-15 | $7700.00 | Window Closed / Lapsed |