Patent US3260613A successfully refreshed from Google Patents.
US3260613A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat-sensitive sheet for thermographic copying
Assignee: Interchemical Corp
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Filing: 1963-03-15
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Granted: 1966-07-12
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Expires: 1983-03-15
Abstract
No abstract record available.
Inventors
- 👤 Edward C Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:19
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/30; B41M5/32; Y; Y10; Y10S; Y10S430/00; Y10S430/165; Y10T; Y10T428/00; Y10T428/25; Y10T428/251
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
A HEAT-SENSITIVE COPYING SHEET ADAPTED, ON BEING PLACED IN HEAT-CONDUCTIVE RELATIONSHIP WITH A GRAPHIC ORIGINAL HAVING GRAPHIC REPRESENTATIONS HIGHLY ABSORBTIVE TO INFRARED RAYS AND ON IRRADIATION OF SAID GRAPHIC ORIGINAL WITH INFRARED RAYS, TO PRODUCE A COPY OF SAID GRAPHIC ORIGINAL, SAID COPYING SHEET COMPRISING A BASE SHEET HAVING THEREON A COATING COMPRISING (A) A DISPERSION OF A LEAD COMPOND HAVING A MELTING POINT ABOVE 120*C. SELECTED FROM THE GROUP CONSISTING OF LEAD SALTS SALTS OF MALEIC ACID, LEAD CARBONATE, LEAD PHOSPHITE, LEAD FORMATE, LEAD HYDROXIDE AND LEAD OXIDE AND (B) A DISPERSION OF PHENYL SUBSTITUTED THIOUREA HAVING A MELTING POINT ABOVE 120*C. IN (C) A BINDER COMPRISING A MAJOR PORTION OF CHLORINATED PARAFFIN WAX HAVING A CHLORIDE CONTENT OF AT LEAST 50% BY WEIGHT AND A MELTING POINT BETWEEN 60* AND 120*C.
Claim 2
Dependent Claim
133 words
A HEAT-SENSITIVE COPYING SHEET ADAPTED, ON BEING PLACED IN HEAT-CONDUCTIVE RELATIONSHIP WITH A GRAPHIC ORIGINAL HAVING GRAPHIC REPRESENTATIONS HIGHLY ABSORBTIVE TO INFRARED RAYS AND ON IRRADIATION OF SAID GRAPHIC ORIGINAL WITH INFRARED RAYS, TO PRODUCE A COPY OF SAID GRAPHIC ORIGINAL, SAID COPYING SHEET COMPRISING A BASE SHEET HAVING THEREON A COATING COMPRISING (A) A DISPERSION OF A LEAD COMPOND HAVING A MELTING POINT ABOVE 120*C. SELECTED FROM THE GROUP CONSISTING OF LEAD SALTS SALTS OF MALEIC ACID, LEAD CARBONATE, LEAD PHOSPHITE, LEAD FORMATE, LEAD HYDROXIDE AND LEAD OXIDE AND (B) A DISPERSION OF PHENYL SUBSTITUTED THIOUREA HAVING A MELTING POINT ABOVE 120*C. IN (C) A BINDER COMPRISING A MAJOR PORTION OF CHLORINATED PARAFFIN WAX HAVING A CHLORIDE CONTENT OF AT LEAST 50% BY WEIGHT AND A MELTING POINT BETWEEN 60* AND 120*C.
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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) | 1969-07-11 | 1970-01-10 | 1970-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-11 | 1974-01-10 | 1974-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-11 | 1978-01-10 | 1978-07-12 | $7700.00 | Window Closed / Lapsed |