Patent US4056898A successfully refreshed from Google Patents.
US4056898A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water actuated plant fertilizing device
Assignee: Individual
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Filing: 1976-05-10
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Granted: 1977-11-08
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Expires: 1996-05-10
Abstract
Abstract A fertilizer container for releasing nutrients to plants over a prolonged period of time including a receptacle having upper and lower reservoir separated by a porous plate. The lower reservoir contains fertilizer in a time-delay form which is slowly released upon contact with water seeping through the porous plate from the upper reservoir. The dissolved fertilizer then seeps through the porous lower reservoir and into the soil surrounding a plant.
Inventors
- 👤 Jacqueline I. Brucato
- 👤 Steve J. Brucato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:10
CPC Classifications
A; A01; A01G; A01G29/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
192 words
A fertilizer container for placement on the surface of the soil in close proximity to the root system of a plant, comprising, in combination, a cup having outer walls, a porous bottom, said outer walls tapering inwardly toward said bottom, the central portion of said porous bottom portion being a raised broad upper support surface, an interior shoulder on a midsection of said outer walls, a flat substantially uniformly perforated cover plate, said cover plate having a periphery positionable on said interior shoulder and substantially conforming to said outer wall, said raised upper support surface supporting a substantial portion of said cover plate and said shoulder supporting said periphery of said cover plate thereby providing a broad support base for said cover plate and separating said cup into a lower compartment and an upper compartment, said lower compartment being substantially donut-shaped and said upper compartment being for the reception of water, whereby the water received in said upper compartment may seep uniformly into said lower compartment, where at least a portion of said fertilizer is dissolved and passes, through said porous bottom onto the soil supporting the container at a controlled rate.
Claim 2
Dependent Claim
192 words
A fertilizer container for placement on the surface of the soil in close proximity to the root system of a plant, comprising, in combination, a cup having outer walls, a porous bottom, said outer walls tapering inwardly toward said bottom, the central portion of said porous bottom portion being a raised broad upper support surface, an interior shoulder on a midsection of said outer walls, a flat substantially uniformly perforated cover plate, said cover plate having a periphery positionable on said interior shoulder and substantially conforming to said outer wall, said raised upper support surface supporting a substantial portion of said cover plate and said shoulder supporting said periphery of said cover plate thereby providing a broad support base for said cover plate and separating said cup into a lower compartment and an upper compartment, said lower compartment being substantially donut-shaped and said upper compartment being for the reception of water, whereby the water received in said upper compartment may seep uniformly into said lower compartment, where at least a portion of said fertilizer is dissolved and passes, through said porous bottom onto the soil supporting the container at a controlled rate.
Claim 3
Dependent Claim
17 words
The fertilizer container of claim 1 wherein said container is formed of a plastic for easy manufacture.
Claim 4
Dependent Claim
15 words
The fertilizer container of claim 1 wherein the outer walls of said cup are scalloped.
Claim 5
Dependent Claim
22 words
The fertilizer container of claim 3 wherein the bottom portion includes a central upraised substantially frustoconical portion supporting said upper support surface.
References Cited (Backward Citations)
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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) | 1980-11-07 | 1981-05-09 | 1981-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-11-07 | 1985-05-09 | 1985-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-11-07 | 1989-05-09 | 1989-11-08 | $7700.00 | Window Closed / Lapsed |