Patent US3846331A successfully refreshed from Google Patents.
US3846331A
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US
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Solvent composition for dyes for use in pressure-sensitive copying paper
Assignee: Kureha Corp
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Filing: 1972-08-04
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Granted: 1974-11-05
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Expires: 1992-08-04
Abstract
Abstract A dye solvent composition for use in pressure-sensitive copying paper containing one or more aromatic hydrocarbons and a compound selected from a group that includes naphthyl phenyl methane, naphthyl phenyl ethane, and derivatives thereof.
Inventors
- 👤 F Kimura
- 👤 T Toguchi
- 👤 A Konishi
- 👤 M Takahashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:58
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0071; C09B67/0083; B; B41; B41M; B41M5/00; B41M5/124; B41M5/165; B41M5/1655; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2984
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
52 words
A DYE SOLVENT COMPOSITION FOR USE IN PRESSURE-SENSITIVE COPYING PAPER COMPRISING: SELECTED BY WEIGHT OF AN AROMATIC HYDROCARBON DYE SOLVENT SELECTED FROM THE GROUP CONSISTING OF DIARYL METHANESE, ALKYL NAPTHALENESE, TRIARYL DIMETHANES, ALKYL DIPHENYLS, AND MIXTURES THEREOF, AND; 10-100 PARTS BY WEIGHT OF ONE OR MORE OF A COMPOUND HAVING GENERAL FROMULA:
Claim 2
Dependent Claim
52 words
A DYE SOLVENT COMPOSITION FOR USE IN PRESSURE-SENSITIVE COPYING PAPER COMPRISING: SELECTED BY WEIGHT OF AN AROMATIC HYDROCARBON DYE SOLVENT SELECTED FROM THE GROUP CONSISTING OF DIARYL METHANESE, ALKYL NAPTHALENESE, TRIARYL DIMETHANES, ALKYL DIPHENYLS, AND MIXTURES THEREOF, AND; 10-100 PARTS BY WEIGHT OF ONE OR MORE OF A COMPOUND HAVING GENERAL FROMULA:
Claim 3
Dependent Claim
32 words
The dye solvent composition of claim 1 wherein said compound is selected from the group consisting of naphthyl phenyl methane, naphthyl phenyl ethane, methyl naphthyl phenyl methane and methyl naphthyl phenyl ethane.
Claim 4
Dependent Claim
16 words
The dye solvent composition of claim 1 wherein diaryl methanes are compounds having a general formula:
Claim 5
Dependent Claim
17 words
The dye solvent composition of claim 1 wherein said alkyl naphthalenes are compounds having the general formula:
Claim 6
Dependent Claim
17 words
The dye solvent composition of claim 1 wherein said triaryl dimethanes are compounds having the general formula:
Claim 7
Dependent Claim
17 words
The dye solvent composition of claim 1 wherein said alkyl diphenyls are compounds having the general formula:
Claim 8
Dependent Claim
25 words
The dye solvent composition of claim 1, further comprising 20-80 parts by weight of mineral oil per 100 parts by weight of said dye solvent.
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) | 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 |