US3938279A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Growth medium to cover the surface of the ground
Assignee: Norsk Hydro ASA
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Filing: 1974-02-08
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Granted: 1976-02-17
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Expires: 1994-02-08
Abstract
Abstract The invention relates to a growth medium which is to be used for covering the surface of the ground and which consists of or contains a mixture of an inorganic mineral binder based on cement, an organic fibrous material and fertiliser.
Inventors
- 👤 Gunnar Johan Fonne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:55
CPC Classifications
C; C09; C09K; C09K17/00; C09K17/52; Y; Y10; Y10S; Y10S106/00; Y10S106/90
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
28 words
A growth medium for covering the surface of ground which comprises a mixture of Portland cement, an organic fibrous material and fertilizer in a weight ratio of 10-40:5-20:5-15.
Claim 2
Dependent Claim
28 words
A growth medium for covering the surface of ground which comprises a mixture of Portland cement, an organic fibrous material and fertilizer in a weight ratio of 10-40:5-20:5-15.
Claim 3
Dependent Claim
16 words
A growth medium according to claim 1 wherein the organic fibrous material consists of knotter pulp.
Claim 4
Dependent Claim
10 words
A growth medium according to claim 1 further containing seeds.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-02-16 | 1979-08-18 | 1980-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-16 | 1983-08-18 | 1984-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-16 | 1987-08-18 | 1988-02-17 | $7700.00 | Window Closed / Lapsed |