US2910377A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat-sensitive copying-paper
Assignee: 3M Co
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Filing: 1956-06-28
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Granted: 1959-10-27
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Expires: 1976-06-28
Abstract
No abstract record available.
Inventors
- 👤 Owen Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:51
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/494; G03C1/498; G03C1/4989; B; B41; B41M; B41M5/00; B41M5/26; B41M5/30; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10S430/00; Y10S430/165; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/3188; Y10T428/31884; Y10T428/31888
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
A HEAT-SENSITIVE COPYING-PAPER FOR MAKING CLEAR AND SHARP COPIES OF GRAPHIC SUBJECT MATTER BY METHODS INVOLVING BRIEF APPLICATION OF A HEAT-PATTERN CORRESPONDING TO SAID GRAPHIC-MATTER AS HEREIN SESCRIBED, SAID COPYING-PAPER BEING VISIBLY STABLE AT NORMAL ROOM AND STORAGE TEMPERATURES AND UNDER EXPOSED TO LIGHT, SAID COPYING-PAPER INCLUDING A VISIBLY HEAT-SENSITIVE LAYER CONTAINING, IN INTIMATE ASSICIATION ONE MOL OF SILVER BEHENATE, ABOUT ONE MOL OF BEHENIC ACID, AND AND ABOUT ONE-HALF MOL OF PROTOCATECHUIC ACID.
Claim 2
Dependent Claim
74 words
A HEAT-SENSITIVE COPYING-PAPER FOR MAKING CLEAR AND SHARP COPIES OF GRAPHIC SUBJECT MATTER BY METHODS INVOLVING BRIEF APPLICATION OF A HEAT-PATTERN CORRESPONDING TO SAID GRAPHIC-MATTER AS HEREIN SESCRIBED, SAID COPYING-PAPER BEING VISIBLY STABLE AT NORMAL ROOM AND STORAGE TEMPERATURES AND UNDER EXPOSED TO LIGHT, SAID COPYING-PAPER INCLUDING A VISIBLY HEAT-SENSITIVE LAYER CONTAINING, IN INTIMATE ASSICIATION ONE MOL OF SILVER BEHENATE, ABOUT ONE MOL OF BEHENIC ACID, AND AND ABOUT ONE-HALF MOL OF PROTOCATECHUIC ACID.
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) | 1962-10-26 | 1963-04-27 | 1963-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-26 | 1967-04-27 | 1967-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-26 | 1971-04-27 | 1971-10-27 | $7700.00 | Window Closed / Lapsed |