US3905152A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coated seeds
Assignee: 3M Co
•
Filing: 1974-07-02
•
Granted: 1975-09-16
•
Expires: 1994-07-02
Abstract
Abstract Coated seeds are disclosed which comprise seeds having a coating thereon comprising non-porous, hydrophobic, non-phytotoxic particles which are adhered to each other and to the seed by means of a hydrophilic binder in such a manner that the coating is highly porous and provides facile gas and water exchange between the seed and its environment. The coated seeds can be planted with mechanized precision planting equipment.
Inventors
- 👤 John C Loperfido
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:17
CPC Classifications
A; A01; A01C; A01C1/00; A01C1/06
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
90 words
A coated seed comprising a seed bearing a coating which comprises a plurality of non-porous, hydrophobic, non-phytotoxic particles which are adhered to each other and to the seed by means of a hydRophilic binder which is present in an amount not exceeding 10 percent by weight of said coating, and wherein said coated seed has a porosity characteristic of at least 15 percent total porosity with at least 12 percent of the total pore volume being due to the presence of pores having a diameter between 2 and 100 microns.
Claim 2
Dependent Claim
90 words
A coated seed comprising a seed bearing a coating which comprises a plurality of non-porous, hydrophobic, non-phytotoxic particles which are adhered to each other and to the seed by means of a hydRophilic binder which is present in an amount not exceeding 10 percent by weight of said coating, and wherein said coated seed has a porosity characteristic of at least 15 percent total porosity with at least 12 percent of the total pore volume being due to the presence of pores having a diameter between 2 and 100 microns.
Claim 3
Dependent Claim
47 words
A coated seed according to claim 1 wherein said coated seed has a porosity characteristic of at least 25 percent total porosity with at least 25 percent of the total pore volume being due to the presence of pores having a diameter between 2 and 100 microns.
Claim 4
Dependent Claim
15 words
A coated seed according to claim 2 wherein the particles comprise a synthetic polymeric material.
Claim 5
Dependent Claim
12 words
A coated seed according to claim 3 wherein the particles comprise polypropylene.
Claim 6
Dependent Claim
14 words
A coated seed according to claim 3 wherein the particles comprise polyethylene or polyester.
Claim 7
Dependent Claim
18 words
A coated seed according to claim 1 wherein the particles have a diameter between 50 and 900 microns.
Claim 8
Dependent Claim
18 words
A coated seed according to claim 6 wherein the particles have a diameter between 150 and 750 microns.
Claim 9
Dependent Claim
13 words
A coated seed according to claim 1 wherein the particles comprise silanized glass.
Claim 10
Dependent Claim
21 words
A coated seed according to claim 1 wherein the particles are fiber-shaped and their longest dimensions are up to 2500 microns.
Claim 11
Dependent Claim
14 words
A coated seed according to claim 1 wherein the binder is animal hide glue.
Claim 12
Dependent Claim
13 words
A coated seed according to claim 1 wherein the binder is polyvinyl alcohol.
Claim 13
Dependent Claim
13 words
A coated seed according to claim 1 wherein the binder is hydroxypropyl cellulose.
Claim 14
Dependent Claim
19 words
A coated seed according to claim 1 wherein the particles comprise polypropylene and the binder comprises animal hide glue.
Claim 15
Dependent Claim
16 words
A coated seed according to claim 1 wherein the coating thickness is 1 to 3 millimeters.
Claim 16
Dependent Claim
16 words
A coated seed according to claim 1 wherein growth regulators have been incorporated into said coating.
Claim 17
Dependent Claim
13 words
A coated seed according to claim 1 wherein the seed coated is lettuce.
Claim 18
Dependent Claim
14 words
A coated seed according to claim 1 wherein the seed coated is sugar beet.
Claim 19
Dependent Claim
13 words
A coated seed according to claim 1 wherein the seed coated is radish.
Claim 20
Dependent Claim
13 words
A coated seed according to claim 1 wherein the seed coated is onion.
Claim 21
Dependent Claim
13 words
A coated seed according to claim 1 wherein the seed coated is celery.
Claim 22
Dependent Claim
13 words
A coated seed according to claim 1 wherein the seed coated is cucumber.
Claim 23
Dependent Claim
13 words
A coated seed according to claim 1 wherein the seed coated is carrot.
Claim 24
Dependent Claim
13 words
A coated seed according to claim 1 wherein the seed coated is spinach.
Claim 25
Dependent Claim
13 words
A coated seed according to claim 1 wherein the seed coated is tomato.
Claim 26
Dependent Claim
13 words
A coated seed according to claim 1 wherein the seed coated is cabbage.
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) | 1978-09-15 | 1979-03-17 | 1979-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-15 | 1983-03-17 | 1983-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-15 | 1987-03-17 | 1987-09-16 | $7700.00 | Window Closed / Lapsed |