US 12,144,292 B2
Hybrid grass support structure with stone wool layer
Rob Venneker, Vienna (AT); and Gert-Jan De Koning, Krimpen aan der Ijssel (NL)
Assigned to HYDROFIELDS BV, (NL)
Filed by Hydrofields bv, Schiedam (NL)
Filed on Jul. 5, 2023, as Appl. No. 18/347,415.
Application 18/347,415 is a division of application No. 17/270,365, granted, now 11,849,678, previously published as PCT/EP2019/072120, filed on Aug. 19, 2019.
Claims priority of application No. 18190081 (EP), filed on Aug. 21, 2018; and application No. 18193902 (EP), filed on Sep. 11, 2018.
Prior Publication US 2023/0337598 A1, Oct. 26, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. A01G 24/18 (2018.01); A01G 9/033 (2018.01); A01G 20/10 (2018.01); A01G 20/20 (2018.01); A01G 24/46 (2018.01); E01C 13/08 (2006.01)
CPC A01G 20/20 (2018.02) [A01G 9/033 (2018.02); A01G 20/10 (2018.02); A01G 24/18 (2018.02); A01G 24/46 (2018.02); E01C 2013/086 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A box made of a biodegradable material, the box comprising a hybrid grass support structure comprising:
a growth medium layer, the growth medium layer comprising a growth medium selected from a group comprising sand, soil, an organic granulate, and a mixture of two or more of the foregoing;
a stone wool layer positioned below the growth medium layer; and
a plurality of synthetic grass fibers incorporated at least into the growth medium layer and also into the stone wool layer.