US4881343A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seed colorant
Assignee: Dainichiseika Color and Chemicals Mfg Co Ltd
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Filing: 1989-04-04
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Granted: 1989-11-21
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Expires: 2009-04-04
Abstract
Abstract A seed colorant useful especially in coloring seeds to distinguish same from those to be used for foods is formed of an aqueous medium such as water, a dye and/or pigment of a desired hue, and a binder resin composed of the salt of chitosan and an organic acid. The seed colorant may additionally contain spherical resin particles.
Inventors
- 👤 Takanori Sannan
- 👤 Mitsutaka Seki
- 👤 Shinya Tsuchida
- 👤 Shojiro Horiguchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:27
CPC Classifications
C; C09; C09D; C09D105/00; C09D105/08
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
27 words
Seeds colored with a colorant comprising: an aqueous medium; a dye and/or pigment; and a binder resin composed of the salt of chitosan and an organic acid.
Claim 2
Dependent Claim
27 words
Seeds colored with a colorant comprising: an aqueous medium; a dye and/or pigment; and a binder resin composed of the salt of chitosan and an organic acid.
Claim 3
Dependent Claim
54 words
The seeds as claimed in claim 1, wherein the organic acid is selected from the group consisting of formic acid, acetic acid, propionic acid, butyric acid, taurine, pyrrolidonecarboxylic acid, citric acid, malic acid, lactic acid, hydroxymalonic acid, malonic acid, succinic acid, adipic acid, benzoic acid, salicylic acid, aminobenzoic acid, phthalic acid and vitamin C.
Claim 4
Dependent Claim
16 words
The seeds as claimed in claim 1, where the organic acid is a naturally-occurring organic acid.
Claim 5
Dependent Claim
20 words
The seeds as claimed in claim 3, wherein the naturally-occurring organic acid is lactic acid, malic acid or citric acid.
Claim 6
Dependent Claim
27 words
The seeds as claimed in claim 1, wherein the dye and/or pigment is contained at a total concentration of 0.1 - 10 wt.% of the aqueous medium.
Claim 7
Dependent Claim
34 words
The seeds as claimed in claim 1, wherein the salt has been formed by using the organic acid in an amount of 0.8 - 2 moles per mole of amino groups in the chitosan.
Claim 8
Dependent Claim
23 words
The seeds as claimed in claim 1, wherein the proportion of the salt is 0.1 - 20 wt.% based on the seed colorant.
Claim 9
Dependent Claim
12 words
The seed as claimed in claim 1, further comprising spherical resin particles.
Claim 10
Dependent Claim
29 words
The seeds as claimed in claim 8, wherein 10 - 100 parts by weight of the spherical resin particles are contained per 100 parts by weight of the salt.
Claim 11
Dependent Claim
28 words
The seeds colorant as claimed in claim 8, wherein the spherical resin particles are made of an acrylic resin, polyethylene resin, polyamide resin, melamine resin or epoxy resin.
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) | 1992-11-20 | 1993-05-22 | 1993-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-11-20 | 1997-05-22 | 1997-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-11-20 | 2001-05-22 | 2001-11-21 | $7700.00 | Window Closed / Lapsed |