(EP997190-A1)   NOVELTY - The adsorbent particle is of basically ellipsoidal form, with a first axis A-A of length (a), a second axis B-B of length (b) and a third axis C-C of length (c). The three axes are orthogonal and the lengths are such that ab=c and the ratio a/b is such that 1.05 a/b 2.50. Gas separation by adsorption using such particles. Installation for gas separation using such particles    USE - Separation of gases by adsorption    ADVANTAGE - The elliptical shape of the particles retains much of the crushing strength of more common spheroidal particles, but increases the surface to volume ratio and therefore the adsorption efficiency    (JP2000093791-A)   NOVELTY - The adsorbent particle is of basically ellipsoidal form, with a first axis A-A of length (a), a second axis B-B of length (b) and a third axis C-C of length (c). The three axes are orthogonal and the lengths are such that ab=c and the ratio a/b is such that 1.05 a/b 2.50. Gas separation by adsorption using such particles. Installation for gas separation using such particles    USE - Separation of gases by adsorption    ADVANTAGE - The elliptical shape of the particles retains much of the crushing strength of more common spheroidal particles, but increases the surface to volume ratio and therefore the adsorption efficiency    (CN1250687-A)   NOVELTY - The adsorbent particle is of basically ellipsoidal form, with a first axis A-A of length (a), a second axis B-B of length (b) and a third axis C-C of length (c). The three axes are orthogonal and the lengths are such that ab=c and the ratio a/b is such that 1.05 a/b 2.50. Gas separation by adsorption using such particles. Installation for gas separation using such particles    USE - Separation of gases by adsorption    ADVANTAGE - The elliptical shape of the particles retains much of the crushing strength of more common spheroidal particles, but increases the surface to volume ratio and therefore the adsorption efficiency    (US6221492-B1)   NOVELTY - The adsorbent particle is of basically ellipsoidal form, with a first axis A-A of length (a), a second axis B-B of length (b) and a third axis C-C of length (c). The three axes are orthogonal and the lengths are such that ab=c and the ratio a/b is such that 1.05 a/b 2.50. Gas separation by adsorption using such particles. Installation for gas separation using such particles    USE - Separation of gases by adsorption    ADVANTAGE - The elliptical shape of the particles retains much of the crushing strength of more common spheroidal particles, but increases the surface to volume ratio and therefore the adsorption efficiency