US2618573A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of making pressure sensitive record material
Assignee: NCR Voyix Corp
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Filing: 1949-10-04
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Granted: 1952-11-18
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Expires: 1969-10-04
Abstract
No abstract record available.
Inventors
- 👤 Barrett K Green
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:14
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/124; B41M5/132; B41M5/136; B41M5/145
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
THE PROCESS OF MAKING A PRESSURE-SENSITIVE RECORD MATERIAL INCLUDING THE STEP OF FORMING ON A SUPPORTING MEMBER A FILM OF A SOLID INSULATING MEDIUM, DERIVED FROM AN ORGANIC HYDROPHILIC COLLOID SUBSTANCE, HAVING INTERSPERSED THERETHROUGH AT RANDOM SOLID PARTICLES OF A PLURALITY OF ADSORPTION COLOR-FORMING REACTANTS, DISPOSED IN CONTIGUITY, BUT INSULATED FROM COLOR-FORMING REACTION CONTACT BY SUCH MEDIUM, AT LEAST ONE OF SAID REACTANTS BEING KAOLIN AND AT LEAST ANOTHER OF SAID REATANTS BEING A MIXTURE OF THE COMPOUND 3,3 BIS(P-DIMETHYLAMINOPHENYL) -6-DIMETHYLAMINO PHTHALIDE, HAVING THE STRUCTURE
Claim 2
Dependent Claim
85 words
THE PROCESS OF MAKING A PRESSURE-SENSITIVE RECORD MATERIAL INCLUDING THE STEP OF FORMING ON A SUPPORTING MEMBER A FILM OF A SOLID INSULATING MEDIUM, DERIVED FROM AN ORGANIC HYDROPHILIC COLLOID SUBSTANCE, HAVING INTERSPERSED THERETHROUGH AT RANDOM SOLID PARTICLES OF A PLURALITY OF ADSORPTION COLOR-FORMING REACTANTS, DISPOSED IN CONTIGUITY, BUT INSULATED FROM COLOR-FORMING REACTION CONTACT BY SUCH MEDIUM, AT LEAST ONE OF SAID REACTANTS BEING KAOLIN AND AT LEAST ANOTHER OF SAID REATANTS BEING A MIXTURE OF THE COMPOUND 3,3 BIS(P-DIMETHYLAMINOPHENYL) -6-DIMETHYLAMINO PHTHALIDE, HAVING THE STRUCTURE
References Cited (Backward Citations)
US2505481A
Cited
US2505471A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-18 | 1956-05-19 | 1956-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-18 | 1960-05-19 | 1960-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-18 | 1964-05-19 | 1964-11-18 | $7700.00 | Window Closed / Lapsed |