Patent US2570951A successfully refreshed from Google Patents.
Patent US2771373A successfully refreshed from Google Patents.
US2771373A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stencil duplicating inks
Assignee: AB Dick Co
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Filing: 1952-03-27
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Granted: 1956-11-20
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Expires: 1972-03-27
Abstract
No abstract record available.
Inventors
- 👤 Chambers Thomas Seal
- 👤 Florence Robert Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:55
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/02; C09D11/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A STENCIL DUPLICATING INK CONSISTING ESSENTIALLY OF MORE THAN 50 PERCENT BY WEIGHT OF A TINCTORIAL AGENT, DILUENT, FROM 3-15 PERCENT BY WEIGHT OF A TINCTORIAL AGENT, FROM 3-15 PERCENT BY WEIGHT OF A PROTEIN DISSOLVED IN THE AQUEOUS MEDIUM TO BODY THE INK COMPOSITION AND TO PROVIDE AN ADHERENT BASE UPON DRYING, A LIQUID POLYHYDRIC ALCOHOL PRESENT IN AN AMOUNT UP TO 40 PERCENT BY WEIGHT, 0.2-2 PERCENT BY WEIGHT OF A WETTING AGENT, AND AN ALDEHYDE SELECTED FROM THE GROUP CONSISTING OF GLYOXAL AND PYRUVIC ALDEHYDE PRESENT IN AMOUNTS RANGING FROM 5-20 PERCENT BY WEIGHT OF THE BODYING AGENT.
Claim 2
Dependent Claim
101 words
A STENCIL DUPLICATING INK CONSISTING ESSENTIALLY OF MORE THAN 50 PERCENT BY WEIGHT OF A TINCTORIAL AGENT, DILUENT, FROM 3-15 PERCENT BY WEIGHT OF A TINCTORIAL AGENT, FROM 3-15 PERCENT BY WEIGHT OF A PROTEIN DISSOLVED IN THE AQUEOUS MEDIUM TO BODY THE INK COMPOSITION AND TO PROVIDE AN ADHERENT BASE UPON DRYING, A LIQUID POLYHYDRIC ALCOHOL PRESENT IN AN AMOUNT UP TO 40 PERCENT BY WEIGHT, 0.2-2 PERCENT BY WEIGHT OF A WETTING AGENT, AND AN ALDEHYDE SELECTED FROM THE GROUP CONSISTING OF GLYOXAL AND PYRUVIC ALDEHYDE PRESENT IN AMOUNTS RANGING FROM 5-20 PERCENT BY WEIGHT OF THE BODYING AGENT.
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) | 1959-11-20 | 1960-05-21 | 1960-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-20 | 1964-05-21 | 1964-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-20 | 1968-05-21 | 1968-11-20 | $7700.00 | Window Closed / Lapsed |