US4985077A
Expired / Lapsed
US
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Watercolor ink
Assignee: Taiho Kogyo Co Ltd
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Filing: 1989-04-14
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Granted: 1991-01-15
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Expires: 2009-04-14
Abstract
Abstract A watercolor ink contains a water-soluble dye, water, and at least one benzyl ether represented by the general formulas <IMAGE> (wherein n1 stands for an integer of 3 to 15) and <IMAGE> (wherein m stands for an integer of 1 to 15 and n2 for 0 or an integer of 1 to 14, providing that 1</=m+n2</=15 is satisfied).
Inventors
- 👤 Osao Ise
- 👤 Hideto Kanazawa
- 👤 Masahiko Ishida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:15
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30; C09D11/38; C09D11/16
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
103 words
A watercolor ink, comprising: a water-soluble dye; water; 1.0-20% by weight, based on the total amount of said watercolor ink of a benzyl ether of the formula: ##STR7## wherein n 1 is an integer within the range of 3-15, or the formula: ##STR8## wherein m is an integer within the range of 1-15 and n 2 is 0 or an integer in the range of 1-14, provided that 1≦m+n 2 ≦15 is satisfied; a water-soluble organic solvent; and 0.1 to 10.0% by weight of a second solvent containing an OH group in its molecular unit and being insoluble or sparingly soluble in water.
Claim 2
Dependent Claim
103 words
A watercolor ink, comprising: a water-soluble dye; water; 1.0-20% by weight, based on the total amount of said watercolor ink of a benzyl ether of the formula: ##STR7## wherein n 1 is an integer within the range of 3-15, or the formula: ##STR8## wherein m is an integer within the range of 1-15 and n 2 is 0 or an integer in the range of 1-14, provided that 1≦m+n 2 ≦15 is satisfied; a water-soluble organic solvent; and 0.1 to 10.0% by weight of a second solvent containing an OH group in its molecular unit and being insoluble or sparingly soluble in water.
Claim 3
Dependent Claim
39 words
The watercolor ink according to claim 1, wherein said second solvent is at least one member selected from the group consisting of 2-ethyl-1,6-hexane diol, diethylene glycol hexyl ether, ethylene oxide adducts of acetylene glycol and ethylene glycol benzyl ether.
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) | 1994-01-14 | 1994-07-16 | 1995-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-01-14 | 1998-07-16 | 1999-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-01-14 | 2002-07-16 | 2003-01-15 | $7700.00 | Window Closed / Lapsed |