US5224292A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fibrous mat for growing plants
Assignee: Invista North America LLC
•
Filing: 1990-04-11
•
Granted: 1993-07-06
•
Expires: 2010-04-11
Abstract
Abstract A plant-growing nonwoven mat comprising a layer of hollow synthetic organic fibers having in their lumens water-soluble plant adjuvants, such as plant nutrients, fungicides, algaecides, weed killers, pesticides, and the like, provides slow release of the adjuvants to enhance and protect plant growth.
Inventors
- 👤 Anthony Anton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:51
CPC Classifications
A; A01; A01G; A01G24/00; A01G24/30; A01G24/40; A01G24/44
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
47 words
A plant-growing medium comprising a layer of hollow polyester fibers having lumens amounting to 10 to 40% of the fiber cross-section and containing within the lumens a water-soluble plant adjuvant having a dry weight amounting to 0.5 to 15% of the total weight of the hollow fibers
Claim 2
Dependent Claim
47 words
A plant-growing medium comprising a layer of hollow polyester fibers having lumens amounting to 10 to 40% of the fiber cross-section and containing within the lumens a water-soluble plant adjuvant having a dry weight amounting to 0.5 to 15% of the total weight of the hollow fibers
Claim 3
Dependent Claim
31 words
A plant-growing medium in accordance with claim 1 wherein the water-soluble plant adjuvant is selected from the group consisting of plant nutrients, fertilizers, fungicides, algaecides, weed killers, pesticides and combinations thereof.
Claim 4
Dependent Claim
16 words
A plant-growing medium in accordance with claim 1 wherein the water-soluble adjuvant is a plant nutrient.
Claim 5
Dependent Claim
69 words
A plant-growing medium in accordance with any of claims 1, 2 or 3 wherein the plant-growing medium is a nonwoven mat in which seeds are mechanically entangled and the hollow-fiber layer of the mat weighs in the range of 85 to 340 g/m 2 , has a density in the range of 0.01 to 0.080 g/cm 3 and comprises hollow fibers in the range of 3 to 20 dtex.
Claim 6
Dependent Claim
67 words
A plant-growing medium in accordance with claim 4 wherein the nonwoven mat is a composite comprising a surface layer of hydrophilic fibers needled to the layer of hollow fibers, said hydrophilic fiber layer weighing in the range of 20 to 75 g/m 2 and comprising fibers in the range of 1 to 6 dtex and the dry adjuvant amounting to 2 to 5% of the fiber weight.
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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) | 1996-07-05 | 1997-01-04 | 1997-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-07-05 | 2001-01-04 | 2001-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-07-05 | 2005-01-04 | 2005-07-06 | $7700.00 | Window Closed / Lapsed |