Patent US3241997A successfully refreshed from Google Patents.
US3241997A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat-sensitive copying material
Assignee: Individual
•
Filing: 1962-04-27
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Granted: 1966-03-22
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Expires: 1982-04-27
Abstract
No abstract record available.
Inventors
- 👤 Schutzner Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:07
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/30; B41M5/40; B41M5/42; B41M5/44; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10S430/00; Y10S430/165; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/31504; Y10T428/31855; Y10T428/3188; Y10T428/31884
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
A HEAT-SENSITIVE COPY MATERIAL, COMPRISING A SUPPORTING MATERIAL AND TWO SEPARATE LAYER LOCATED ONE ON TOP OF THE OTHER AND CARRIED BY SAID SUPPORTING MATERIAL, SAID LAYERS HAVING DIFFERENT MELTING POINTS AND BEING SOLUBLE IN DIFFERENT SOLVENTS, THE SOLVENT OF ONE LAYER BEING INCAPABLE OF DISSOLVING THE OTHER LAYER, SAID LAYERS CONTAINING AT LEAST TWO DIFFERENT CHEMICAL REAGENTS CAPABLE OF REACTING WITH EACH OTHER WHEN AT LEAST ONE OF THEM IS IN MOLTEN FORM TO PRODUCE COLOR, SAID COLOR-
Claim 2
Dependent Claim
79 words
A HEAT-SENSITIVE COPY MATERIAL, COMPRISING A SUPPORTING MATERIAL AND TWO SEPARATE LAYER LOCATED ONE ON TOP OF THE OTHER AND CARRIED BY SAID SUPPORTING MATERIAL, SAID LAYERS HAVING DIFFERENT MELTING POINTS AND BEING SOLUBLE IN DIFFERENT SOLVENTS, THE SOLVENT OF ONE LAYER BEING INCAPABLE OF DISSOLVING THE OTHER LAYER, SAID LAYERS CONTAINING AT LEAST TWO DIFFERENT CHEMICAL REAGENTS CAPABLE OF REACTING WITH EACH OTHER WHEN AT LEAST ONE OF THEM IS IN MOLTEN FORM TO PRODUCE COLOR, SAID COLOR-
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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) | 1969-03-21 | 1969-09-20 | 1970-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-21 | 1973-09-20 | 1974-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-21 | 1977-09-20 | 1978-03-22 | $7700.00 | Window Closed / Lapsed |