US3788003A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seedling container
Assignee: Alberta Innovates
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Filing: 1971-07-19
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Granted: 1974-01-29
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Expires: 1991-07-19
Abstract
Abstract Peat and water are mixed to form a thick paste which is extruded into a plastic film casing. The casing and filling are sliced into short, open-ended units. The units provide containers in which seedlings can be grown. When the seedlings are to be planted, the casing is perforated or shredded with a knife and the peat plug and seedling root ball buried together.
Inventors
- 👤 S Creighton
- 👤 D Mitchell
- 👤 W Kay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:15
CPC Classifications
C; C05; C05F; C05F11/00; C05F11/02; A; A01; A01G; A01G24/00; A01G24/60
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
119 words
A seedling container unit comprising: a coherant, solid, extruded, cylindrical body consisting essentially of compressed, comminuted peat, having a Von Post decomposition rank of about 1-3, and water, provided in an amount between 70 percent and 85 percent by weight of the body at the time of extrusion, said body having flat ends, the curved surface of said body being encased by a thin, impermeable, flexible, plastic film, the top and bottom end faces of the body being unencased, said body further having a substantially uniform dry weight/wet volume density throughout its length and width, said density being between about 0.13 gms/cc and 0.25 gms/cc, said body having a seed or seedling planted in a flat end face thereof.
Claim 2
Dependent Claim
119 words
A seedling container unit comprising: a coherant, solid, extruded, cylindrical body consisting essentially of compressed, comminuted peat, having a Von Post decomposition rank of about 1-3, and water, provided in an amount between 70 percent and 85 percent by weight of the body at the time of extrusion, said body having flat ends, the curved surface of said body being encased by a thin, impermeable, flexible, plastic film, the top and bottom end faces of the body being unencased, said body further having a substantially uniform dry weight/wet volume density throughout its length and width, said density being between about 0.13 gms/cc and 0.25 gms/cc, said body having a seed or seedling planted in a flat end face thereof.
Claim 3
Dependent Claim
105 words
A process for producing seedling container units useful for rearing seedlings comprising: mixing loose peat with water in an amount between 70 percent and 85 percent by weight of the mixture and in the absence of any binder to form an extrudable mixture; compressing and comminuting the peat in the mixture by extruding the mixture to form a continuous, coherant, cylindrical body of peat having a uniform dry weight/wet volume density of between 0.13 gms/cc and 0.25 gms/cc; encasing the cylindrical body in a thin, flexible, impermeable casing; and slicing the encased body transversely to its longitudinal axis to form a plurality of container units.
Claim 4
Dependent Claim
105 words
A process for producing seedling container units useful for rearing seedlings comprising: mixing loose peat with water in an amount between 70 percent and 85 percent by weight of the mixture and in the absence of any binder to form an extrudable mixture; compressing and comminuting the peat in the mixture by extruding the mixture to form a continuous, coherant, cylindrical body of peat having a uniform dry weight/wet volume density of between 0.13 gms/cc and 0.25 gms/cc; encasing the cylindrical body in a thin, flexible, impermeable casing; and slicing the encased body transversely to its longitudinal axis to form a plurality of container units.
References Cited (Backward Citations)
CA760162A
Cited
US1959139A
Cited
US2785969A
Cited
US3172234A
Cited
US3362106A
Cited
US3456386A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-28 | 1977-07-30 | 1978-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-28 | 1981-07-30 | 1982-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-28 | 1985-07-30 | 1986-01-29 | $7700.00 | Window Closed / Lapsed |