Patent US3843383A successfully refreshed from Google Patents.
US3843383A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recording sheet employing an aromatic carboxylic acid
Assignee: Fujifilm Holdings Corp
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Filing: 1972-10-30
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Granted: 1974-10-22
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Expires: 1992-10-30
Abstract
Abstract 1. A RECORDING SHEET COMPRISING A SUPPORT HAVING THEREON A LAYER OF COLOR DEVELOPER CAPABLE OF REACTING WITH A SUBSTANTIALLY COLORLESS COLOR TO FORM A COLORED IMAGE WHERIN SAID COLOR DEVELOPER CONSISTS ESSENTIALLY OF AT LEAST ONE CLAY AND AT LEAST ONE AROMATIC CARBOXYLIC ACID OR AN ALKALI METAL SALT THEREOF.
Inventors
- 👤 S Ishige
- 👤 T Hayashi
- 👤 H Kato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:07
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/124; B41M5/132; B41M5/155; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2984
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
A RECORDING SHEET COMPRISING A SUPPORT HAVING THEREON A LAYER OF COLOR DEVELOPER CAPABLE OF REACTING WITH A SUBSTANTIALLY COLORLESS COLOR TO FORM A COLORED IMAGE WHERIN SAID COLOR DEVELOPER CONSISTS ESSENTIALLY OF AT LEAST ONE CLAY AND AT LEAST ONE AROMATIC CARBOXYLIC ACID OR AN ALKALI METAL SALT THEREOF.
Claim 2
Dependent Claim
50 words
A RECORDING SHEET COMPRISING A SUPPORT HAVING THEREON A LAYER OF COLOR DEVELOPER CAPABLE OF REACTING WITH A SUBSTANTIALLY COLORLESS COLOR TO FORM A COLORED IMAGE WHERIN SAID COLOR DEVELOPER CONSISTS ESSENTIALLY OF AT LEAST ONE CLAY AND AT LEAST ONE AROMATIC CARBOXYLIC ACID OR AN ALKALI METAL SALT THEREOF.
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) | 1977-10-21 | 1978-04-22 | 1978-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-21 | 1982-04-22 | 1982-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-21 | 1986-04-22 | 1986-10-22 | $7700.00 | Window Closed / Lapsed |