US4448796A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating of plant seeds
Assignee: Nestec SA
•
Filing: 1982-11-02
•
Granted: 1984-05-15
•
Expires: 2002-11-02
Abstract
Abstract A binder solution for applying plant protectants and similar agents to seeds includes a metal pigment such as copper, aluminium or bronze. Presence of the pigment produces a particularly smooth-surfaced coating providing improved abrasion resistance and flow properties.
Inventors
- 👤 Franz Wieser
- 👤 Hans-Peter Hofinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:15
CPC Classifications
A; A01; A01C; A01C1/00; A01C1/06; Y; Y10; Y10S; Y10S47/00; Y10S47/09
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
119 words
A process for treating plant seeds with an active ingredient, which includes forming on the surface of the seeds a firmly adhering, moisture-permeable, essentially water-insoluble coating, by applying to the seeds a coating solution comprising 4.0 to 20% by weight of a binder and 45 to 95% by weight of a solvent for the binder, wherein: (i) the binder is a natural or synthetic resin or a natural or synthetic wax, and (ii) the respective weight ratios of solvent to binder and solvent to total solids in the solution are 3.5 to 20:1 and 0.4 to 6.0:1, and thereafter eliminating the solvent, characterised in that the coating solution also contains 5.0 to 25.0% by weight of a metal pigment.
Claim 2
Dependent Claim
119 words
A process for treating plant seeds with an active ingredient, which includes forming on the surface of the seeds a firmly adhering, moisture-permeable, essentially water-insoluble coating, by applying to the seeds a coating solution comprising 4.0 to 20% by weight of a binder and 45 to 95% by weight of a solvent for the binder, wherein: (i) the binder is a natural or synthetic resin or a natural or synthetic wax, and (ii) the respective weight ratios of solvent to binder and solvent to total solids in the solution are 3.5 to 20:1 and 0.4 to 6.0:1, and thereafter eliminating the solvent, characterised in that the coating solution also contains 5.0 to 25.0% by weight of a metal pigment.
Claim 3
Dependent Claim
16 words
A process according to claim 1 in which the metal pigment is copper, aluminium or bronze.
Claim 4
Dependent Claim
21 words
A process according to claim 1 or claim 2 in which the solution contains about 7.0% by weight of metal pigment.
Claim 5
Dependent Claim
12 words
A process according to claim 1 in which the binder includes shellac.
Claim 6
Dependent Claim
18 words
A process according to claim 4 in which the binder is a mixture of coffee wax and shellac.
Claim 7
Dependent Claim
14 words
A process according to claim 5 in which the solvent includes an aqueous alkali.
Claim 8
Dependent Claim
15 words
A process according to claim 4, 5 or 6 in which the solvent comprises ethanol.
Claim 9
Dependent Claim
23 words
A process according to claim 4 or claim 5 in which the solvent is a mixture of ethanol with acetone or methylene chloride.
Claim 10
Dependent Claim
22 words
A process according to claim 1 in which the binder includes coffee wax or polystyrene, and the solvent includes a halogenated hydrocarbon.
Claim 11
Dependent Claim
27 words
A process according to any preceding claim, in which 0.3 to 5 parts by weight of solution are applied to every 100 parts by weight of seed.
References Cited (Backward Citations)
US4344979A
Cited
US4368591A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-05-15 | 1987-11-14 | 1988-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-15 | 1991-11-14 | 1992-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-15 | 1995-11-14 | 1996-05-15 | $7700.00 | Window Closed / Lapsed |