US4364197A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pre-grown turf and manufacturing of pre-grown turf
Assignee: FITEXA SA A CORP OF FRANCE
•
Filing: 1981-03-02
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Granted: 1982-12-21
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Expires: 2001-03-02
Abstract
Abstract A carpet for providing pre-grown turf or the like is provided. The carpet comprises two layers of non-woven cloth of which at least one of the layers is made substantially from flax fibers. Intermediate the layers of non-woven cloth is a layer of grass seeds.
Inventors
- 👤 Gerard Baron
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:38
CPC Classifications
A; A01; A01G; A01G20/00; A01G20/20
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
42 words
A carpet for providing pre-grown turf, comprising: upper and lower layers of non-woven cloth, at least one of the non-woven cloth layers being substantially made of flax; and a layer of grass seeds spread intermediate the upper and lower non-woven cloth layers.
Claim 2
Dependent Claim
42 words
A carpet for providing pre-grown turf, comprising: upper and lower layers of non-woven cloth, at least one of the non-woven cloth layers being substantially made of flax; and a layer of grass seeds spread intermediate the upper and lower non-woven cloth layers.
Claim 3
Dependent Claim
20 words
The carpet of claim 1, wherein the upper and lower non-woven cloth layers are both substantially made from flax fibers.
Claim 4
Dependent Claim
26 words
The carpet of claim 1, wherein the upper non-woven cloth layer is substantially made of flax fibers and weighs between 100 and 300 g/m 2 .
Claim 5
Dependent Claim
22 words
The carpet of claim 1, 2, or 3, wherein the lower non-woven cloth layer weighs between 100 and 400 g/m 2 .
Claim 6
Dependent Claim
46 words
The carpet of claim 3, wherein expanded polystyrene marbles are spread intermediate the upper and lower nonwoven cloth layers, the marbles having a diameter between 0.5 and 3 mm and being spread at a rate of 50 to 500 cm 3 /m 2 of carpet area.
Claim 7
Dependent Claim
46 words
The carpet of claim 4, wherein expanded polystyrene marbles ae spread intermediate the upper and lower non-woven cloth layers, the marbles having a diameter between 0.5 and 3 mm and being spread at a rate of 50 to 500 cm 3 /m 2 of carpet area.
Claim 8
Dependent Claim
15 words
The carpet of claim 1, 2, 3, or 5, wherein the grass seeds are pre-germinated.
Claim 9
Dependent Claim
11 words
The carpet of claim 6, wherein the grass seeds are pre-germinated.
Claim 10
Independent Claim
58 words
A method for preparing a carpet of pre-grown turf, comprising the steps of: spreading grass seeds intermediate two layers of non-woven cloth at least one of said layers being substantially made from flax fibers; placing the layers on a waterproof cover which is spread over ground having a gently sloping surface; watering the layers with a nutrient solution.
Claim 11
Independent Claim
58 words
A method for preparing a carpet of pre-grown turf, comprising the steps of: spreading grass seeds intermediate two layers of non-woven cloth at least one of said layers being substantially made from flax fibers; placing the layers on a waterproof cover which is spread over ground having a gently sloping surface; watering the layers with a nutrient solution.
Claim 12
Dependent Claim
13 words
The method of claim 9, wherein the waterproof cover is a polyethylene sheet.
Claim 13
Dependent Claim
23 words
The method of claim 9 or 10, further comprising the step of tufting the two non-woven cloth layers together after the spreading step.
Claim 14
Dependent Claim
26 words
The method of claim 9 or 10, wherein the spreading step further comprises the step of spreading expanded polystyrene marbles intermediate the two non-woven cloth layers.
Claim 15
Dependent Claim
24 words
The method of claim 11, wherein the spreading step further comprises the step of spreading expanded polystyrene marbles intermediate the two non-woven cloth layers.
Claim 16
Dependent Claim
21 words
The method of claim 9 or 10, further comprising the step of collecting the excess nutrient solution after the watering step.
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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) | 1985-12-20 | 1986-06-21 | 1986-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-12-20 | 1990-06-21 | 1990-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-12-20 | 1994-06-21 | 1994-12-21 | $7700.00 | Window Closed / Lapsed |