Patent US5224292A successfully refreshed from Google Patents.
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 06:21
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.
References Cited (Backward Citations)
US2976646A
Cited
US2923023A
Cited
US3225125A
Cited
US3557491A
Cited
US3772137A
Cited
US3831317A
Cited
GB1367090A
Cited
US4066490A
Cited
US3914901A
Cited
GB2036523A
Cited
US4357780A
Cited
US4364197A
Cited
GB2080083A
Cited
US4318248A
Cited
US4777763A
Cited
US4805343A
Cited
WO1988005256A1
Cited
US4972627A
Cited
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 |