Patent US3846153A successfully refreshed from Google Patents.
US3846153A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat sensitive composition and thermal recording sheet containing the same
Assignee: Mitsubishi Paper Mills Ltd
•
Filing: 1972-07-24
•
Granted: 1974-11-05
•
Expires: 1992-07-24
Abstract
Abstract 1. A THERMAL RECORDING SHEET WHICH CONTAINS THE PHENOL COMPOUND HAVING THE FORMULA HO-(1,4-PHENYLENE)-C(-CH3)(-C5H11-N)-(1,4-PHENYLENE)-OH AT LEAST ONE ORDINARILY COLORLESS OR LIGHT-COLORED LACTONE COMPOUND CAPABLE OF REACTING WITH SAID PHENOL COMPOUND UPON HEATING TO FORM A COLOR, AND A BINDER, THE PROPORTIONS OF PHENOL COMPOUND, LACTONE COMPOUND AND BINDER BEING 1-30% BY WEIGHT OF THE LACTONE COMPOUND, 45- 94% BY WEIGHT OF THE PHENOL COMPOUND AND 4-40% BY WEIGHT OF A BINDER, EXPRESSED BY DRY WEIGHT PERCENTAGE.
Inventors
- 👤 K Futaki
- 👤 I Kohmura
- 👤 K Haino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:08
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/30; B41M5/333; B41M5/3333; B41M5/3335; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31942; Y10T428/31949; Y10T428/31964; Y10T428/31967
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
12 words
A THERMAL RECORDING SHEET WHICH CONTAINS THE PHENOL COMPOUND HAVING THE FORMULA
Claim 2
Dependent Claim
12 words
A THERMAL RECORDING SHEET WHICH CONTAINS THE PHENOL COMPOUND HAVING THE FORMULA
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-04 | 1978-05-06 | 1978-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-04 | 1982-05-06 | 1982-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-04 | 1986-05-06 | 1986-11-05 | $7700.00 | Window Closed / Lapsed |