US3140959A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Paper product with chemical watermark and means for making same
Assignee: Customark Corp
•
Filing: 1960-12-27
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Granted: 1964-07-14
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Expires: 1980-12-27
Abstract
No abstract record available.
Inventors
- 👤 Frans V E Vaurio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:39
CPC Classifications
B; B41; B41M; B41M3/00; B41M3/10; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24934
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A METHOD OF IMPARTING A CHEMICAL WATERMARK OF SELECTED DESIGN TO A FINISHED SHEET OF PAPER WHICH COMPRISES THE STEPS OF PRINTING THE DESIGN ON A PORTION OF THE SURFACE OF SAID PAPER SHEET WITH A LIQUID COMPOSITION CONSISTING ESSENTIALLY OF A SYNTHETIC, THERMOSETTING, CURABLE RESIN AND AN ORGANIC SOLVENT, AND REMOVING SAID SOLVENT TO OBTAIN A SUBSTANTIALLY COLORLESS CHEMICAL WATERMARK OF SAID DEPOSITED RESIN HAVING AN INDEX OF REFRACTION OF ABOUT 1.4 TO ABOUT 1.7, AND SAID CHEMICAL WATERMARK BEING SUBSTANTIALLY FREE FROM GLOSS, HAVING INK RECEPTIVITY AND RESISTING DISCOLORATION WITH AGING SUBSTANTIALLY IN THE SAME WAY AS THE PAPER.
Claim 2
Independent Claim
101 words
A METHOD OF IMPARTING A CHEMICAL WATERMARK OF SELECTED DESIGN TO A FINISHED SHEET OF PAPER WHICH COMPRISES THE STEPS OF PRINTING THE DESIGN ON A PORTION OF THE SURFACE OF SAID PAPER SHEET WITH A LIQUID COMPOSITION CONSISTING ESSENTIALLY OF A SYNTHETIC, THERMOSETTING, CURABLE RESIN AND AN ORGANIC SOLVENT, AND REMOVING SAID SOLVENT TO OBTAIN A SUBSTANTIALLY COLORLESS CHEMICAL WATERMARK OF SAID DEPOSITED RESIN HAVING AN INDEX OF REFRACTION OF ABOUT 1.4 TO ABOUT 1.7, AND SAID CHEMICAL WATERMARK BEING SUBSTANTIALLY FREE FROM GLOSS, HAVING INK RECEPTIVITY AND RESISTING DISCOLORATION WITH AGING SUBSTANTIALLY IN THE SAME WAY AS THE PAPER.
References Cited (Backward Citations)
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US1998237A
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US2285095A
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US2620316A
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GB696673A
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US2642390A
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US2721505A
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US2904447A
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US2888452A
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US2872428A
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US2900364A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-07-14 | 1968-01-13 | 1968-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-14 | 1972-01-13 | 1972-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-14 | 1976-01-13 | 1976-07-14 | $7700.00 | Window Closed / Lapsed |