Steven P Stone

US Patent:

20130043612, Feb 21, 2013

Filed:

Oct 18, 2012

Appl. No.:

13/654958

Inventors:

ALZA CORPORATION - PALO ALTO CA, US
STEVEN F. STONE - SARATOGA CA, US

Assignee:

ALZA CORPORARION - PALO ALTO CA

International Classification:

B29C 43/58

US Classification:

264 401

Abstract:

Rapid and accurate determination of the formulation orientation of multi-layer capsule-shaped tablets with respect to different internal formulation layers proximate to the opposite narrow and rounded ends of the tablets is required. By including an appropriate color scheme in multi-layer osmotic tablets, detection of the formulation orientation is achieved by detecting the color at a spot location on a side of the tablet corresponding to one or another formulation layer or to one or another interface of two formulation layers depending on the formulation orientation of the tablet.