Patent US5580374A successfully refreshed from Google Patents.
Patent US2772175A successfully refreshed from Google Patents.
US2772175A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stencil duplicating inks
Assignee: AB Dick Co
•
Filing: 1952-04-02
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Granted: 1956-11-27
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Expires: 1972-04-02
Abstract
No abstract record available.
Inventors
- 👤 Beatty Julian Lee
- 👤 Florence Robert Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:41
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
A STENCIL DUPLICATING INK CONSISTING ESSENTIALLY OF WATER AS THE DILUENT, A TINCTORIAL AGENT PRESENT IN AMOUNTS WITHIN THE RANGE OF 3-15% BY WEIGHT OF THE INK COMPOSITION AND 0.5-15% BY WEIGHT OF A BODYING AGENT FOR IMPARTING THE DESIRED VISCOSITY TO THE INK COMPOSITION AND FOR FUNCTIONING AS AN ADHERENT BASE UPON DRYING CONSISTING OF A WATER SOLUBLE POLYVALENT METAL AMMONIUM COLLOID COMPLEX CHARACTERIZED BY SUBSTANTIAL INSOLUBILITY UPON RELEASE OF THE AMMONIUM COMPONENT UPON DRYING AND IN WHICH THE COLLOID OF WHICH THE COMPLEX IS FORMED IS SELECTED FROM THE GROUP CONSISTING OF POLYSACCHARIDES, PROTEINS, NATURAL RESINS, POLYALKYL ACRYLATES IN WHICH THE ALKYL GROUP CONTAINS FROM 1-4 CARBON ATOMS, CELLULOSE ETHERS AND CELLULOSE ESTERS.
Claim 2
Dependent Claim
115 words
A STENCIL DUPLICATING INK CONSISTING ESSENTIALLY OF WATER AS THE DILUENT, A TINCTORIAL AGENT PRESENT IN AMOUNTS WITHIN THE RANGE OF 3-15% BY WEIGHT OF THE INK COMPOSITION AND 0.5-15% BY WEIGHT OF A BODYING AGENT FOR IMPARTING THE DESIRED VISCOSITY TO THE INK COMPOSITION AND FOR FUNCTIONING AS AN ADHERENT BASE UPON DRYING CONSISTING OF A WATER SOLUBLE POLYVALENT METAL AMMONIUM COLLOID COMPLEX CHARACTERIZED BY SUBSTANTIAL INSOLUBILITY UPON RELEASE OF THE AMMONIUM COMPONENT UPON DRYING AND IN WHICH THE COLLOID OF WHICH THE COMPLEX IS FORMED IS SELECTED FROM THE GROUP CONSISTING OF POLYSACCHARIDES, PROTEINS, NATURAL RESINS, POLYALKYL ACRYLATES IN WHICH THE ALKYL GROUP CONTAINS FROM 1-4 CARBON ATOMS, CELLULOSE ETHERS AND CELLULOSE ESTERS.
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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) | 1959-11-27 | 1960-05-28 | 1960-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-27 | 1964-05-28 | 1964-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-27 | 1968-05-28 | 1968-11-27 | $7700.00 | Window Closed / Lapsed |