US2855266A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat sensitive materials for recording instruments
Assignee: Arthur D Little Inc
•
Filing: 1953-02-16
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Granted: 1958-10-07
•
Expires: 1973-02-16
Abstract
No abstract record available.
Inventors
- 👤 Raymond W James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:35
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/30; B41M5/32; Y; Y10; Y10S; Y10S101/00; Y10S101/29; Y10S260/00; Y10S260/43; Y10S428/00; Y10S428/913; Y10T; Y10T428/00; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/31504; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31906
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
A HEAT-SENSITIVE DRY, NON-TACKY RECORDING MATERIAL, COMPRISING A SUPPORTING MATERIAL AND A COATING, SAID COATING BEING CHARACTERIZED BY TURNING COLOR UPON THE APPLICATION OF HEAT ABOVE A TEMPERATURE OF 250*F., SAID COATING COMPRISING POLYVINYL CHLORIDE, ZINC OXIDE AND A COMPOUND WHICH UPON HEATING TO A TEMPERATURE BETWEEN 200*F. AND 300*F. LIBERATES ACID, SAID POLYVINYL CHLORIDE AND SAID ZINC OXIDE BEING PRESENT IN A WEIGHT RATIO RANGE OF FROM 7/3 TO 3/7 AND SAID ACIDLIBERATING COMPOUND BEING PRESENT IN SUFFICIENT QUANTITY WHEN HEATED TO FROM 200*F. TO 300*F. TO MAINTAIN A PH OF THE FINAL DEGRADATION PRODUCT BELOW ABOUT 3.
Claim 2
Dependent Claim
99 words
A HEAT-SENSITIVE DRY, NON-TACKY RECORDING MATERIAL, COMPRISING A SUPPORTING MATERIAL AND A COATING, SAID COATING BEING CHARACTERIZED BY TURNING COLOR UPON THE APPLICATION OF HEAT ABOVE A TEMPERATURE OF 250*F., SAID COATING COMPRISING POLYVINYL CHLORIDE, ZINC OXIDE AND A COMPOUND WHICH UPON HEATING TO A TEMPERATURE BETWEEN 200*F. AND 300*F. LIBERATES ACID, SAID POLYVINYL CHLORIDE AND SAID ZINC OXIDE BEING PRESENT IN A WEIGHT RATIO RANGE OF FROM 7/3 TO 3/7 AND SAID ACIDLIBERATING COMPOUND BEING PRESENT IN SUFFICIENT QUANTITY WHEN HEATED TO FROM 200*F. TO 300*F. TO MAINTAIN A PH OF THE FINAL DEGRADATION PRODUCT BELOW ABOUT 3.
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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) | 1961-10-06 | 1962-04-07 | 1962-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-06 | 1966-04-07 | 1966-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-06 | 1970-04-07 | 1970-10-07 | $7700.00 | Window Closed / Lapsed |