Substratum for soil-free cultivation
US4769277A · kind A · utility
12Cited by
5References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 7, 1986 |
| Grant date | Sep 6, 1988 |
| Priority date | — |
| Expiry date | May 7, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/50
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Substrata for soil-free cultivation are characterized by a relatively low by-volume mass. They are also constituted of fine fibers. The substrata present the advantage of a high degree of water retention, even for small thicknesses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.