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Machine translation
1. (WO2004095001) DETERMINATION OF PARTICLE SIZE BY IMAGE ANALYSIS
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2004/095001    International Application No.:    PCT/US2004/012597
Publication Date: 04.11.2004 International Filing Date: 20.04.2004
IPC:
G01N 15/06 (2006.01), G01N 15/14 (2006.01)
Applicants: BAXTER INTERNATIONAL INC. [US/US]; One Baxter Parkway, Deerfield, Illinois 60015 (US) (For All Designated States Except US).
NEUBERGER, Damian [US/US]; (US) (For US Only).
WONG, Joseph Chung Tak [US/US]; (US) (For US Only)
Inventors: NEUBERGER, Damian; (US).
WONG, Joseph Chung Tak; (US)
Agent: MAYO, Michael C.; Baxter International Inc., One Baxter Parkway, Deerfield, IL 60015 (US)
Priority Data:
10/419,612 21.04.2003 US
Title (EN) DETERMINATION OF PARTICLE SIZE BY IMAGE ANALYSIS
(FR) DETERMINATION DE LA TAILLE DE PARTICULES PAR ANALYSE D'IMAGES
Abstract: front page image
(EN)The present invention provides a method for determining a particle size. The process includes the steps of: (i) positioning a particle on a flat surface; (ii) recording a digital image of the particle on the flat surface wherein the digital image is recorded with an image plane parallel to the flat surface and the digital image of the particle includes a digital background of the flat surface; (iii) removing the digital background image of the flat surface to obtain an isolated digital image of the particle; (iv) determining a surface area (A) of the particle from the isolated digital image of the particle; (v) tilting the particle at an angle (&thetas;) with respect to the image plane to expose an edge of the particle; (vi) measuring a measured thickness (Tm) of the particle; (vii) determining a calculated actual thickness (T) of the particle by the equation T = Tm / sine &thetas;; (viii) determining a particle volume (V) of the particle by the equation V = A * T; and (ix) determining an equivalent spherical particle size diameter (D) of the particle by the equation D = 2 * 3√ (3/4)(1/&pgr;)(V) .
(FR)L'invention porte sur un procédé de détermination de la taille des particules comportant les étapes suivantes: (i) pose d'une particule sur une surface plane; (ii) prise d'une image numérique de la particule avec un plan parallèle à la surface plane de manière à ce que l'image comporte la surface plane en arrière plan; (iii) élimination de la surface plane en arrière plan pour obtenir une image de la particule isolée; (iv) détermination de la surface (A) à partir de l'image de la particule isolée; (v) basculement de la particule d'un angle (?) pour en exposer un bord; (vi) mesure de l'épaisseur (Tm) de la particule; (vii) détermination de l'épaisseur réelle (T) de la particule au moyen de l'équation T = Tm / sine ?; (viii) détermination du volume (V) de la particule au moyen de l'équation V = A * T; et (ix) détermination du diamètre (D) d'une particule sphérique de taille équivalente au moyen de l'équation D = 2 * 3v (3/4)(1/?)(V).
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RU, SC, SD, SE, SG, SK, SL, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, YU, ZA, ZM, ZW.
African Regional Intellectual Property Organization (BW, GH, GM, KE, LS, MW, MZ, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IT, LU, MC, NL, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)