US 12,402,798 B2
Pressure sensing layer useful in pressure sensing devices and that comprises film comprising layer of porous matrix material
Mathieu Tauban, Lyons (FR); Mickaël Pruvost, Paris (FR); Annie Colin, Bordeaux (FR); Philippe Poulin, Talence (FR); Lise Trouillet-Fonti, Villette-de-Vienne (FR); and Olivier Sanseau, Lyons (FR)
Assigned to L'ÉCOLE SUPÉRIEURE DEPHYSIQUE ET DE CHIMIEINDUSTRIELLES DE LA VILLE DE PARIS, Paris (FR); and LE CENTRE NATIONAL DE LARECHERCHE SCIENTIFIQUE, Paris (FR)
Appl. No. 16/958,882
Filed by ECOLE SUPERIEURE DE PHYSIQUE ET DE CHIMIE INDUSTRIELLES DE LA VILLE DE PARIS, Paris (FR); and CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, Paris (FR)
PCT Filed Apr. 18, 2018, PCT No. PCT/EP2018/059957
§ 371(c)(1), (2) Date Jun. 29, 2020,
PCT Pub. No. WO2019/129391, PCT Pub. Date Jul. 4, 2019.
Claims priority of application No. PCT/EP2018/050002 (WO), filed on Jan. 1, 2018; and application No. PCT/EP2018/050003 (WO), filed on Jan. 1, 2018.
Prior Publication US 2020/0337569 A1, Oct. 29, 2020
Int. Cl. G01L 1/14 (2006.01); A61B 5/00 (2006.01); A61B 5/02 (2006.01); A61B 5/021 (2006.01); B32B 5/18 (2006.01); B32B 27/06 (2006.01); B32B 27/36 (2006.01); C08J 5/18 (2006.01); C08J 9/00 (2006.01); C08J 9/28 (2006.01)
CPC A61B 5/02108 (2013.01) [A61B 5/02028 (2013.01); A61B 5/02141 (2013.01); A61B 5/6802 (2013.01); B32B 5/18 (2013.01); B32B 27/065 (2013.01); B32B 27/36 (2013.01); C08J 5/18 (2013.01); C08J 9/0061 (2013.01); C08J 9/0066 (2013.01); C08J 9/009 (2013.01); C08J 9/283 (2013.01); G01L 1/146 (2013.01); G01L 1/148 (2013.01); A61B 2560/0214 (2013.01); A61B 2560/0468 (2013.01); A61B 2562/0247 (2013.01); A61B 2562/12 (2013.01); B32B 2266/0214 (2013.01); B32B 2305/022 (2013.01); B32B 2307/304 (2013.01); B32B 2457/00 (2013.01); C08J 2201/026 (2013.01); C08J 2201/0504 (2013.01); C08J 2205/044 (2013.01); C08J 2205/052 (2013.01); C08J 2205/06 (2013.01); C08J 2207/10 (2013.01); C08J 2383/07 (2013.01); C08J 2483/05 (2013.01); C08J 2483/12 (2013.01)] 25 Claims
OG exemplary drawing
 
1. A pressure sensing layer comprising a film comprising:
a) a first layer of porous matrix material comprising a siloxane polymer, comprising a closed porosity volume fraction, and an open porosity volume fraction, and
b) a conductive or semiconductive filler present in said closed porosity volume fraction of said first layer of porous matrix material a);
wherein at least 70% and up to 90% of the conductive or semiconductive filler is present in the closed porosity volume fraction.