US2519660A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recording material
Assignee: Arthur D Little Inc
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Filing: 1947-09-06
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Granted: 1950-08-22
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Expires: 1967-09-06
Abstract
No abstract record available.
Inventors
- 👤 Raymond W James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:26
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/36; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10S428/918; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31971; Y10T428/31975; Y10T428/31978; Y10T428/31982
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
A HEATING-SENSITIVE, DRY, NON-TACKING RECORDING MATERIAL COMPRISING A BACKING HAVING AN OPAQUE BLUSED COATING CHARACTERIZED BY THE PRESENCE THEREIN OF NUMEROUS MICROSCOPIC HOLLOW SPACES, SAID COATING CONSISTING ESSENTIALLY OF A WATER INSOLUBLE FILM-FORMING THERMOPLASTIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF CELLULOSE ESTERS AND ETHERS, POLYMETHYL METHACRYLATE AND POLYSTYRENE AND FROM 15% TO ABOUT 33% OF A COMPATIBLE PRIMARY PLASTICIZER AHVING A VAPOR PRESSURE LOWER THAN ABOUT 2.0 MM. AT 150*C., SAID COATING BEING FREE FROM SECONDARY PLASTICIZERS AND SUBSTANTIALLY INSENSITIVE TO PRESSURE, BUT CAPABLE OF BECOMING TRANSLUCENT TO RESPONSE TO HEAT RECEIVED FROM A STYLUS HEATED TO A TEMPERATURE OF AT LEAST 80*C., THEREBY TO PROVIDE A VISIBLE CONTRAST WITH THE SURROUNDING OPAQUE UNHEATED AREA.
Claim 2
Dependent Claim
116 words
A HEATING-SENSITIVE, DRY, NON-TACKING RECORDING MATERIAL COMPRISING A BACKING HAVING AN OPAQUE BLUSED COATING CHARACTERIZED BY THE PRESENCE THEREIN OF NUMEROUS MICROSCOPIC HOLLOW SPACES, SAID COATING CONSISTING ESSENTIALLY OF A WATER INSOLUBLE FILM-FORMING THERMOPLASTIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF CELLULOSE ESTERS AND ETHERS, POLYMETHYL METHACRYLATE AND POLYSTYRENE AND FROM 15% TO ABOUT 33% OF A COMPATIBLE PRIMARY PLASTICIZER AHVING A VAPOR PRESSURE LOWER THAN ABOUT 2.0 MM. AT 150*C., SAID COATING BEING FREE FROM SECONDARY PLASTICIZERS AND SUBSTANTIALLY INSENSITIVE TO PRESSURE, BUT CAPABLE OF BECOMING TRANSLUCENT TO RESPONSE TO HEAT RECEIVED FROM A STYLUS HEATED TO A TEMPERATURE OF AT LEAST 80*C., THEREBY TO PROVIDE A VISIBLE CONTRAST WITH THE SURROUNDING OPAQUE UNHEATED AREA.
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) | 1953-08-21 | 1954-02-20 | 1954-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-21 | 1958-02-20 | 1958-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-21 | 1962-02-20 | 1962-08-22 | $7700.00 | Window Closed / Lapsed |