US2939802A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure sensitive recording material and method of making same
Assignee: Uarco Inc
•
Filing: 1957-11-13
•
Granted: 1960-06-07
•
Expires: 1977-11-13
Abstract
No abstract record available.
Inventors
- 👤 Donald K Werle
- 👤 Michalchik Michael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:24
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/124; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31971; Y10T428/31975; Y10T428/31978; Y10T428/31982
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
THE METHOD OF FORMING PRESSURE SENSITIVE RECORD MATERIAL, COMPRISING: APPLYING A FILM INCLUDING A CELLULOSE COMPOUND IN A COMPATIBLE ORGANIC SOLVENT TO THE SURFACE OF A BASE SHEET, DRYING THE FILM IN THE PRESENCE OF MOISTURE CONDENSED THEREON TO FORM AN OPAQUE LIGHTCOLORED BLUSHED FILM SENSITIVE TO WRITING PRESSURE AND THEN SUBSTANTIALLY COMPLETELY DRYING THE FILM.
Claim 2
Independent Claim
56 words
THE METHOD OF FORMING PRESSURE SENSITIVE RECORD MATERIAL, COMPRISING: APPLYING A FILM INCLUDING A CELLULOSE COMPOUND IN A COMPATIBLE ORGANIC SOLVENT TO THE SURFACE OF A BASE SHEET, DRYING THE FILM IN THE PRESENCE OF MOISTURE CONDENSED THEREON TO FORM AN OPAQUE LIGHTCOLORED BLUSHED FILM SENSITIVE TO WRITING PRESSURE AND THEN SUBSTANTIALLY COMPLETELY DRYING THE FILM.
References Cited (Backward Citations)
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Cited
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US2437680A
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US2519660A
Cited
US2583220A
Cited
GB705417A
Cited
US2763574A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-07 | 1963-12-07 | 1964-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-07 | 1967-12-07 | 1968-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-07 | 1971-12-07 | 1972-06-07 | $7700.00 | Window Closed / Lapsed |