Water-holding carrier for plants
US6286254A · kind A · utility
13Cited by
2References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 1, 1999 |
| Grant date | Sep 11, 2001 |
| Priority date | — |
| Expiry date | Feb 1, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01G24/35
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A water-retaining support for a plant exhibiting a water-retaining ability comparable to that of a polyacrylic acid-type hydrogel without inhibition of root origination or root elongation. The water-retaining support for a plant includes a hydrogel-forming polymer having a calcium ion absorption of less than 50 mg per 1 g of its dry weight and having a water absorption magnification in ion-exchange water (at 25.degree. C.) of 100 or more. When the water-retaining support is used, a plant may be supplied with sufficient water without suffering from a deficiency of calcium ions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.