Patent US2936247A successfully refreshed from Google Patents.
US2936247A
Expired / Lapsed
US
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Transfer sheets for forming thermosensitive copies
Assignee: Caribonum Ltd
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Filing: 1958-06-05
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Granted: 1960-05-10
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Expires: 1978-06-05
Abstract
No abstract record available.
Inventors
- 👤 Francis Frederick George
- 👤 Seaward John Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:50
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/40; B41M5/46; B41M5/465; B41M5/10; B41M5/382; B41M5/392; Y; Y10; Y10S; Y10S428/00; Y10S428/914
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
RED TRANSFER SHEET MATERIAL WHICH IS ADAPTED TO PRODUCE RED WRITTEN COPY MATTER CAPABLE OF BEING COPIED BY A THERMO-SENSITIVE COPYING PROCESS, WHICH COMPRISES A PAPER WEB CARRYING A TRANSFERABLE COATING WHICH COMPRISES 12.2 PARTS BY WEIGHT OF FATTY GREY CARNAUBA WAX11.9 PARTS BY WEIGHT OF FATTY GREY CARNAUBA WAX, OF MINERAL OIL AND 27.7 PARTS BY WEIGHT OF STRONG RED LAKE, THE TRANSFERABLE COATING ALSO INCLUDING 17.5 PARTS BY WEIGHT OF GRAPHITE FOR RENDERING THE RED WRITTEN COPY MATTER SUFFICIENTLY HEAT-ABSORPTIVE TO PRODUCE A HEAT PATTERN IN A THERMO-SENSITIVE COPY SHEET WHEN THE LATTER IS IRRADIATED WITH INFRA-RED RADIATION WHEN IS CONTACT WITH THE RED WRITTEN COPY MATTER.
Claim 2
Dependent Claim
109 words
RED TRANSFER SHEET MATERIAL WHICH IS ADAPTED TO PRODUCE RED WRITTEN COPY MATTER CAPABLE OF BEING COPIED BY A THERMO-SENSITIVE COPYING PROCESS, WHICH COMPRISES A PAPER WEB CARRYING A TRANSFERABLE COATING WHICH COMPRISES 12.2 PARTS BY WEIGHT OF FATTY GREY CARNAUBA WAX11.9 PARTS BY WEIGHT OF FATTY GREY CARNAUBA WAX, OF MINERAL OIL AND 27.7 PARTS BY WEIGHT OF STRONG RED LAKE, THE TRANSFERABLE COATING ALSO INCLUDING 17.5 PARTS BY WEIGHT OF GRAPHITE FOR RENDERING THE RED WRITTEN COPY MATTER SUFFICIENTLY HEAT-ABSORPTIVE TO PRODUCE A HEAT PATTERN IN A THERMO-SENSITIVE COPY SHEET WHEN THE LATTER IS IRRADIATED WITH INFRA-RED RADIATION WHEN IS CONTACT WITH THE RED WRITTEN COPY MATTER.
References Cited (Backward Citations)
US1476988A
Cited
US1800561A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-10 | 1963-11-09 | 1964-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-10 | 1967-11-09 | 1968-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-10 | 1971-11-09 | 1972-05-10 | $7700.00 | Window Closed / Lapsed |