Patent US3922283A successfully refreshed from Google Patents.
US3922283A
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New fluoran compound
Assignee: Shin Nisson Kako Co Ltd
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Filing: 1973-08-29
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Granted: 1975-11-25
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Expires: 1993-08-29
Abstract
Abstract WHEREIN X represents a halogen atom is disclosed together with a method of recording as well as a recording composition. A compound of the general formula
Inventors
- 👤 Masakichi Yahagi
- 👤 Shoichi Horiuchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:11
CPC Classifications
C; C09; C09B; C09B11/00; C09B11/04; C09B11/10; C09B11/24; B; B41; B41M; B41M5/00; B41M5/124; B41M5/132; B41M5/136; B41M5/145; B41M5/1455; B41M5/26; B41M5/30; B41M5/323; B41M5/327; B41M5/3275
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
6 words
A COMPOUND OF THE GENERAL FORMULA
Claim 2
Dependent Claim
6 words
A COMPOUND OF THE GENERAL FORMULA
Claim 3
Dependent Claim
5 words
A compound of the formula
Claim 4
Dependent Claim
5 words
A compound of the formula
Claim 5
Dependent Claim
16 words
A thermo sensitive recording material which comprises, as color-forming ingredient, a compound of the general formula
Claim 6
Dependent Claim
16 words
A thermo sensitive recording material which comprises, as color-forming ingredient, a compound of the general formula
Claim 7
Dependent Claim
23 words
A material according to claim 3 wherein said substance is taken from the class consisting of acids, clays, phenol-formalin resin and bis-phenol A.
Claim 8
Dependent Claim
15 words
A recording material which comprises the compound of claim 1 and an inert organic solvent.
Claim 9
Dependent Claim
9 words
A material according to claim 5 which is microencapsulated.
References Cited (Backward Citations)
US3446817A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-24 | 1979-05-26 | 1979-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-24 | 1983-05-26 | 1983-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-24 | 1987-05-26 | 1987-11-25 | $7700.00 | Window Closed / Lapsed |