US3600830A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hollow pellets for seed
Assignee: Svenska Sockerfabriks AB
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Filing: 1969-07-29
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Granted: 1971-08-24
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Expires: 1989-07-29
Abstract
Abstract The present invention is concerned with the problem of protecting seed during the initial germination stage. According to the invention it has been discovered that considerable advantages are obtained if the seed is covered with an outer porous shell or pellet within which the seed lies freely in a space allowing an initial development or germination and protecting the seed against surrounding pests and the like until such time when the pellet bursts and the germinated seed is vital enough to withstand attack from such pests.
Inventors
- 👤 Bjorn Staffan Artur Hamrin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:06
CPC Classifications
A; A01; A01C; A01C1/00; A01C1/06
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
87 words
A method of making a seed capsule comprising coating a seed with a gel-degrading material to form a first layer, coating said first layer with a gelling material to form a second layer, coating said second layer with a porous but substantially water insoluble gel-absorbing material to provide a third layer, whereupon said first layer reacts with said second layer to swell the same and cause it to be absorbed by said third layer, whereby said seed is encapsulated by and lies freely within said third layer.
Claim 2
Independent Claim
87 words
A method of making a seed capsule comprising coating a seed with a gel-degrading material to form a first layer, coating said first layer with a gelling material to form a second layer, coating said second layer with a porous but substantially water insoluble gel-absorbing material to provide a third layer, whereupon said first layer reacts with said second layer to swell the same and cause it to be absorbed by said third layer, whereby said seed is encapsulated by and lies freely within said third layer.
Claim 3
Dependent Claim
28 words
A method according to claim 1 wherein said gel-degrading material is boric acid, said gelling material is sodium alginate, and said gel-absorbing material is comprised of ground cellulose.
Claim 4
Dependent Claim
34 words
A method according to claim 1 wherein a composition selected from the group consisting of nutrients, growth stimulants, fungicides, insecticides and herbicides, or mixtures thereof, is added to at least one of said layers.
Claim 5
Independent Claim
61 words
A method of making a seed capsule comprising coating a seed with water, freezing the same to provide a first layer of ice about said seed, coating said first layer with a porous but substantially water insoluble material to form a capsule, and thawing said capsule, whereupon the resultant water passes through said third layer and the seed lies freely therein.
Claim 6
Independent Claim
61 words
A method of making a seed capsule comprising coating a seed with water, freezing the same to provide a first layer of ice about said seed, coating said first layer with a porous but substantially water insoluble material to form a capsule, and thawing said capsule, whereupon the resultant water passes through said third layer and the seed lies freely therein.
References Cited (Backward Citations)
US2553577A
Cited
CH92046A
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AT107958B
Cited
US1713679A
Cited
US2313057A
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US2502809A
Cited
US2651883A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-23 | 1975-02-22 | 1975-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-23 | 1979-02-22 | 1979-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-23 | 1983-02-22 | 1983-08-24 | $7700.00 | Window Closed / Lapsed |